The diagram below shows equilateral triangle ABC sharing a side with square ACDE. The square has side lengths of 4. What is BE? Justify your answer.

The Diagram Below Shows Equilateral Triangle ABC Sharing A Side With Square ACDE. The Square Has Side

Answers

Answer 1
So, we know the sides AB = 4, and AE = 4.

The angle EAB is 90+60 = 150.

The law of the cosines helps:

BE^2 = AE^2 + AB^2 - 2*AB*AE*cos(150) = 4^2 + 4^2 - 2*4*4*(-sqrt(3)/2)

BE^2 = 16+16+16*sqrt(3) = 16(2+sqrt(3)),

BE = 4*sqrt( 2 + sqrt(3 ) ) Nice number

BE ~ 7.7274 ... ~ 7.73


In fact, if you take a ruler, one can see that the ratio between AB and BE is ~ 1.95 which s the same number.

Answer: BE = 4*sqrt( 2 + sqrt(3 ) ) ~ 7.73
Answer 2

BE is [tex]7.73[/tex]

What is Square?

In Euclidean geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles. It can also be defined as a rectangle with two equal-length adjacent sides.

What is equilateral triangle?

In geometry, an equilateral triangle is a triangle in which all three sides have the same length. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°.

According to question, The diagram below shows equilateral triangle ABC sharing a side with square ACDE.

We have to find BE.

Now, AB [tex]= 4[/tex] and AE [tex]= 4.[/tex]

The angle EAB is [tex]90+60 = 150[/tex]°

Using the law of the cosines, we get

[tex]BE^2 = AE^2 + AB^2 - 2(AB)(AE)cos(150)[/tex]

        [tex]=4^2 + 4^2 -[/tex][tex]2(4)(4)[/tex]×[tex]\frac{\sqrt{3} }{2}[/tex]

⇒[tex]BE=7.73[/tex]

Hence, we can conclude that BE is [tex]7.73[/tex]

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Related Questions

The bear population increases at a rated of 2% each year. There are 1573 bears this year. What is the growth factor, b?

Answers

that would be 1 + 0.02

Growth factor = 1.02.
Final answer:

To find the growth factor, b, we can use the formula for exponential growth: n = ln(M)/ln(b), where n is the number of years, M is the final population, and b is the growth factor.

Explanation:

To find the growth factor, b, we can use the formula for exponential growth: n = ln(M)/ln(b), where n is the number of years, M is the final population, and b is the growth factor. In this case, the final population is 1573 bears. Let's solve for b: n = ln(1573)/ln(b). To isolate b, we can take the exponential of both sides: b^n = 1573. Now we can solve for b by taking the nth root of 1573. The growth factor, b, is the value that, when raised to the power of the number of years, gives us the final population of bears.

what is the simplified form of x+7/x+3 + x-4/3

Answers

3(x+7)+3(x+3)-4(x+3)
3x+21+3x+9-4x-12
2x+18 or 2(x+9)

Answer:

[tex]x*(x+2)[/tex]

Step-by-step explanation:

The expression is as follows:

[tex](x+7)/(x+3)+(x-4)/3[/tex]

To simplify we need to get rid of the denominators for each expression. We can see that the denominators are (x+3) and 3. We therefore mutliply the expression with 3(x+3):

[tex]3*(x+7)+(x-4)*(x+3)= 3*x+21+x^2-x-21[/tex]

Simplify the expression

[tex]x^2+2*x=x*(x+2)[/tex]

Identify the measure of arc PQ

Answers

C, 62
Line segment SQ=180, because it is a straight line
90+28=118
180-118=62
hope this helps:)

You are planning your week-end schedule. You can spend at most 8 hours paying video games and doing homework. You want to spend less than 2 hours playing video games. You must spend at lest 1.5 hours on homework. Which of the following is the system of equations that would represent this situation? Let v= number of hours spent playing video games and let h = the number of hours spent on homework.

A) None of these

B)v<2
h≥ 1.5
v+ h≤ 8
v≥0
h≥0

C) v<1.5
h≥2
v+h≤ 8
v≥0
h≥0

D) v>1.5
h≤2
v+h≥8
v≥0
h≥0

E) v>2
h≤ 1.5
v+h≥8
v≥0
h≥0

Answers

B) H=homework>= 1.5, and there is only B). Then the rest of inequalities in B) make sense, don't they? (Notice the v<2 without the equal ;)

When dividing with polynomials, the goal is to determine how many times the dividend divides evenly into the?

Answers

Whether dividing constant terms or polynomials, we always have definitive terms when it comes to division. Suppose we say, 10x divided by 2. The dividend is the 10x and the divisor is the 2. In other words, the dividend is the number to be divided by the divisor, to obtain the answer called the quotient.

When dividing polynomials, your main goal is to be able to divide the dividend evenly into the divisor. For example, we divide x²+2x+1 by x+1. The first thing you're going to focus is, what term will completely divide the first term of the polynomial? That would be x. Why? Because when you multiply x with x+1, the product is x²+x. When you subtract this from the polynomial, the x² will cancel out. All you have to do is subtract x from 2x, yielding x. Then, you carry down the last term of the equation: +1. You do the steps again. The term that will completely divide x+1 by x+1 is 1. When you subtract the two, you will come up with zero. That means there is no remainder. The polynomial is divisible by the divisor. 
                          x + 1
                        ------------------------------------
                  x+1| x²+2x+1
                        - x²+x
                         ----------------------
                                 x +1
                               - x + 
                             ------------
                                    0

What is the solution of mc018-1.jpg ? (Picture added)

Answers

the solution to the algebraic expression will be:
sqrt(1-3x)=x+3
squaring both sides we get:
1-3x=(x+3)^2
1-3x=x^2+6x+9
this can be written in quadratic form as:
x^2+6x+3x+9-1=0
x^2+9x+8=0
factorizing the above we get:
x^2+9x+8=0
x^2+x+8x+8=0
x(x+1)+8(x+1)=0
(x+8)(x+1)=0
thus;
x+1=0
x=-1
and
x+8=0
x=-8
hence the answer is x=-1 or x=-8
the correct answer is A

The solution to the equation [tex]\sqrt{1-3x}= x+3[/tex] is x = -8 or x = -1.

To find the solution of the equation √(1-3x) = x+3, we can use algebraic techniques to isolate the variable x.

First, let's square both sides of the equation to eliminate the square root:

[tex](\sqrt{1-3x})^{2} = (x+3)^2[/tex]

Simplifying, we get:

[tex]1-3x = x^2 + 6x + 9[/tex]

Next, let's gather all the terms on one side of the equation:

[tex]x^2 + 6x + 9 - 1 + 3x = 0[/tex]

Simplifying further, we have:

[tex]x^2 + 9x + 8 = 0[/tex]

Now, we can factor the quadratic equation:

(x+1)(x+8) = 0

Setting each factor equal to zero, we have:

x+1 = 0 or x+8 = 0

Solving these equations, we find:

x = -1 or x = -8

Therefore, the solution to the equation [tex]\sqrt{1-3x}= x+3[/tex] is x = -8 or x = -1.

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A random sample of 49 statistics examinations was taken. the average score, in the sample, was 84 with a variance of 12.25. the 95% confidence interval for the average examination score of the population of the examinations is

Answers

Final answer:

Given a random sample of 49 exams with an average score of 84 and variance of 12.25, the 95% confidence interval for the average score for the all exams is between 82.4 and 85.6.

Explanation:

Based on the given problem, a random sample of 49 statistics exams was examined. The statistics from this sample recorded an average score of 84 with a variance of 12.25. Using this information, we can establish a 95% confidence interval for the average score for the entire population of statistics exams - that's our goal here.

To calculate this, we take the sample mean (84) and add and subtract the standard deviation (sqrt(12.25)=3.5) multiplied by the z value for 95% confidence level (which is about 1.96).

The confidence interval calculation should look like this: [84 - (1.96*3.5/sqrt(49)), 84 + (1.96*3.5/sqrt(49))]. Obtaining 82.4 and 85.6 as the lower and upper limits, we can see that our 95% confidence interval estimate for the population's average exam score is from 82.4 to 85.6.

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You are building a rectangular dog pen with an area of 90ft^2.you want the length of the pen to be 3ft longer than twice its width. write an equation that can be used to find the width w of the pen

Answers

Let width be w.

Length = 3 + w

Area = 90

L*W = 90

w(3 + w) = 90

3w + w² = 90

w² + 3w - 90 = 0

Belkis is pulling a toy by exerting a force of 1.5 newtons on a string attached to the toy.
The string makes an angle of 52 degrees with the floor. What could be the vertical and horizontal components of the force?

Answers

From what I imagine in the problem description, the toy is located on the ground. Then, Belkis is pulling on the string to keep the toy moving just like how you put a leash on a dog. My illustration is shown in the picture. The F arrow is where Belkis pulls it. Its component vectors are Fx and Fy, as shown. 

From the figure, we can see that it forms a right triangle. So, it makes it easy because the pythagorean theorems are applicable and we can easily use trigonometric functions. First, let's determine Fy which is located opposite to the angle. Since we know the hypotenuse F to be 1.5 N, so we use the sine function:

sin 52° = Fy/F = Fy/1.5
Fy = 1.182 N

For the horizontal component, Fx is parallel to the adjacent side with respect to the angle. Thus, we use the cosine function.

cos 52° = Fx/F = Fx/1.5
Fx = 0.923 N

Write an equation that has a hole at x = 4 and a vertical asymptote at x = -3.

Answers

This has to be a rational equation in order to have those characteristics...in other words a fraction. One such equation would look like this:
x^2 - 2x - 8/x^2 - x - 12.  When you factor both the numerator and the denominator you get (x-4)(x+2)/(x-4)(x+3).  Because the (x-4) is in both the top and the bottom of the fraction, you can cancel them out, which makes that (x-4) a removable discontinuity.  The (x+3) exists as a vertical asymptote.

Change fraction to decimal: 4/7 and round to the nearest thousandth?

Answers

To solve this problem, all we have to remember is that fractions also mean division. Therefore this means that:

4 / 7 = 4 divided by 7

 

We can use either a calculator to solve for this or do the long division method of division (your choice). Now to solve this simply, I used the calculator and got the answer:

4 / 7 = 0.571428571

 

However, the problem asked us to round this to the nearest thousandth. We know that the decimal places are:

0.(tenths)(hundredths)(thousandths)

So we are to round this into 3 decimal numbers which gives us:

4 / 7 = 0.571

The profit P after the first month of operation for a new departmental store is $10,605. The profit of the departmental store after x months can be determined by P = 10500(1.01)x. What will the profit of the store be after 6 months?
A) $11,145.96
B) $11,500.00
C) $10,605.67
D) $10,500.00

Answers

Final answer:

The profit of the store after six months, using the given growth model, can be calculated by substituting x with 6 in the given equation and calculating the result, leading us to the answer A) $11,145.96.

Explanation:

The question relates to an algebraic comprehension of

exponential growth

, using a mathematical model to predict future profit. The profit after x months is given by

P = 10500(1.01)^x

, where 'x' stands for the number of months after the first month. To find the profit after six months, all we have to do is substitute 'x' with '6' in the given equation, like so:

P = 10500(1.01)^6

. When you calculate this, the result is around,

$11,145.96

, so the correct answer to the question 'What will the profit of the store be after 6 months?' is option A) $11,145.96.

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Final answer:

In the given formula, substitute 6 for x, which results in P = 10500(1.01)^6. Upon simplification, it gives the profit after 6 months as $11,145.96.

Explanation:

To calculate the profit of the departmental store after 6 months, we need to substitute the value 6 for x in the given formula P = 10500(1.01)^x. This results in P = 10500(1.01)^6.

When we simplify this, it gives the profit as $11,145.96. Therefore, the correct answer is option A) $11,145.96.

This mathematics concept is related to exponential functions in real-world applications like finance and investment, where the principal amount grows at a consistent rate over time.

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Find the three arithmetic means in this sequence. 12 __ __ __ 40

Answers

To answer this question first you have to count the difference between the highest number with the lowest number.
In this case, the difference is: 40-12=28

After that, you need to determine the leaps in the sequence. In this case, there are 4 leaps.  
After that divide the difference with the leaps : 28:4=7
Therefore the sequence will be 12 , 19, 26, 33, 40

Use calculus to find the largest possible area for a rectangular field that can be enclosed with a fence that is 400 meters long.

Answers

the largest rectangular area is actually a square.

 so the side would be 400/4 = 100 feet

 area of a square is S^2

100^2 = 10,000 square feet

Maximum area is 5625m² when the dimensions are 75m × 75m.

To maximize the area of the rectangular field enclosed by a 300-meter-long fence, let's denote the length of one side as x meters and the other side as y meters.

Since the fence length is 300 meters, the perimeter of the rectangle is 2x + 2y = 300, or x + y = 150.

We want to maximize the area, which is given by A = xy.

To find the maximum, we'll use the constraint equation to express one variable in terms of the other, then substitute into the area formula.

1. From the constraint equation, x = 150 - y.

2. Substitute x into the area formula: A = (150 - y)y.

3. Take the derivative of A with respect to y and set it to zero to find the critical points.

4. Solve for y to find the value that maximizes A.

5. Use this value of y to find the corresponding x.

6. Calculate the maximum area using A = xy.

A phone company offers two monthly plans. Plan A costs $16
plus an additional $0.10
for each minute of calls. Plan B has no initial fee but costs $0.14
for each minute of calls.
For what amount of calling do the two plans cost the same?
What is the cost when the two plans cost the same?

Answers

Final answer:

The two phone plans cost the same when the user uses 400 minutes. At that point, both Plan A and Plan B will cost $56.

Explanation:

To determine for what amount of calling the two plans cost the same, set up an equation where the cost of Plan A equals the cost of Plan B. For Plan A, the cost is $16 plus $0.10 per minute of calls, and for Plan B, the cost is $0.14 per minute of calls. So, we can write the equation as:

16 + 0.10m = 0.14m

where m represents the number of minutes. Solve for m to find when the two plans are equal in cost:

0.14m - 0.10m = 16

0.04m = 16

m = 16 / 0.04

m = 400

Therefore, the two plans cost the same when the user uses 400 minutes. Now, let's calculate the cost of each plan at 400 minutes:

For Plan A: 16 + (0.10 × 400) = 16 + 40 = $56

For Plan B: 0.14 × 400 = $56

The cost when the two plans cost the same is $56.

Final answer:

The two phone plans cost the same when 400 minutes of calls are used. At that point, the cost for each plan is $56.

Explanation:

To determine when the two plans offered by the phone company cost the same, we need to set up an equation where the two costs are equal. For Plan A, the cost is $16 plus $0.10 per minute. For Plan B, there is no initial fee but it costs $0.14 per minute. We can set up the equation like this:

Plan A: Cost = $16 + $0.10 × (number of minutes)

Plan B: Cost = $0.14 × (number of minutes)

To find out when they cost the same, we set these equal to each other:

$16 + $0.10m = $0.14m

Where m is the number of minutes. Solving for m gives us:

$16 = $0.14m - $0.10m

$16 = $0.04m

m = $16 / $0.04

m = 400 minutes

At 400 minutes, both plans cost the same. Now to find the cost when they are the same:

Cost = $16 + ($0.10 × 400)

Cost = $16 + $40

Cost = $56

Therefore, the two plans cost the same at 400 minutes and the cost at that point is $56.

Given the following functions f(x) and g(x), solve (f/g)(-3) and select the correct answer below:

f(x) = 6x + 8

g(x) = x - 2


A: -2
B: -1/2
C: 1/2
D: 2

Answers

We are given the functions:

f(x) = 6x + 8
g(x) = x – 2

The first step in solving this problem is to find for the value of (f / g) (x) given the two functions above. Now finding for (f / g) (x), we can see that if we distribute x inside (f / g) we get f (x) / g(x)

therefore,

(f / g) (x) = f (x) / g (x) 

= (6 x + 8) / (x – 2)

Substituting x = -3 will give us:

(f / g) (- 3) = [6 (- 3) + 8] / (- 3 -2)

(f / g) (- 3) = 2

 

Answer:

D: 2

A basketball player scored x, y, and z points in 3 games. Express the average number of points scored by the player in terms of x, y, and z.

Answers

The average will be the total points divided by the number of games:

(x+y+z) / 3

math???????????.../?

Answers

[tex] 8.05 \cdot 10^8 - 9.16 \cdot 10^6 \\\\ =10^6(8.05 \cdot 10^2-9.16) \\\\ =10^6(805-9.16) \\\\ =10^6(795.84) \\\\ =795.84 \cdot 10^6 \\\\ = 7.96 \cdot 10^8\ kilograms [/tex]

Answer:

Math

Step-by-step explanation:

How would I graph these equations?

a. 2x + 3y = 12

b. x = 7

Answers

These are 2 very different equations, and should be graphed very differently.

A
For Part A, we must first put this in Slope Intercept Form (SIF), which is y=mx+b where "m" is the slope and "b" is the y-intercept. To do this, we should solve like a normal equation for y.

 2x+3y=12
-2x       -2x
 3y=-2x+12
 /3        /3
y=-2/3x+4

Now that we have the proper equation, it is simply to graph! We should simply make a point at (0, 4), and then go down 2, right 3 until you are satisfied with your line.

B
Part B is a simple x value, which means you will draw a vertical line through 7 on the x-axis.

Below I have attached a clearly labeled graph that shows you examples of these lines. The red markings indicate x=7. The yellow circle shows you the y-intercept in Part A, while the yellow dots show you the slope in Part A.

A ball bearing is shaped like a sphere and has a diameter of 2.5 cm. What is the volume contained inside the ball bearing? Use 3.14 for pi. Round your answer to the nearest hundredth.

8.18 cm3
7.15 cm3
7.08 cm3
6.89 cm3

Answers

Answer:

The correct answer is 8.18 cm ^3

Step-by-step explanation:

Formula:

4/3 x pi (3.14) x 1.25 ^3

Pi equals 3.14 and you have to divide 2.5 by 2 because you have to use the radius^3. The other person who answered the question was wrong, so please dont use their answer to help you. Hope this helps you. :)

The volume contained inside the ball bearing is 8.18 cm³

Volume of a sphere:

The ball bearing is shaped like a sphere. Therefore, the volume contained inside the ball bearing is the volume of a sphere.  

v = 4 / 3 πr³

where

r = radius

Therefore,

diameter = 2(radius)

Therefore,

radius = diameter / 2

r = 2.5 / 2 = 1.25 cm

π = 3.14

v = 4 / 3 × 3.14 × 1.25³

v = 24.53125 / 3

v = 8.17708333333

v = 8.18 cm³

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Last month, a company had receipts totaling $3,700. The company had overhead costs of $444. What is the rate of overhead? A. 11% B. 10% C. 13% D. 12

Answers

divide the overhead by total receipts

444/3700 = 0.12

0.12 = 12%

What is 1 / (0! - 1!)

Answers

0! is 1 (don't ask me why) and 1! is 1 due to that you have one and there's nothing under it. After that, we have 1/(-1)=-1

Two functions are shown in the table below. Function 1 2 3 4 5 6 f(x) = −x2 + 4x + 12 g(x) = −x + 6 Complete the table on your own paper, then select the value that is a solution to f(x) = g(x).

Answers

For [tex]\fbox{\begin \\\math{x}=6\\\end{minispace}}[/tex] the function [tex]f(x)=-x^{2} +4x+12[/tex] and [tex]g(x)=-x+6[/tex] has same value.

Step by step explanation:  

The given functions are,

[tex]f(x)=-x^{2}+4x+12[/tex]

[tex]g(x)=-x+6[/tex]

Step 1:  

Substitute [tex]x=1[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(1)[/tex].

[tex]f(1)=-1^{2} +4(1)+12\\f(1)=-1+4+12\\f(1)=15[/tex]

Substitute [tex]x=1[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(1)[/tex] .

[tex]g(1)=-1+6\\g(1)=5[/tex]

Step 2:

Substitute [tex]x=2[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(2)[/tex].

[tex]f(2)=-2^{2} +4(2)+12\\f(2)=-4+8+12\\f(2)=16[/tex]

Substitute [tex]x=2[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(2)[/tex] .

[tex]g(2)=-2+6\\g(2)=4[/tex]

Step 3:

Substitute [tex]x=3[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(3)[/tex].

[tex]f(3)=-3^{2} +4(3)+12\\f(3)=-9+12+12\\f(3)=15[/tex]

Substitute [tex]x=3[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(3)[/tex] .

[tex]g(3)=-3+6\\g(3)=3[/tex]

Step 4:

Substitute [tex]x=4[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(4)[/tex].

[tex]f(4)=-4^{2} +4(4)+12\\f(4)=-16+16+12\\f(4)=12[/tex]

Substitute [tex]x=4[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(4)[/tex] .

[tex]g(4)=-4+6\\g(4)=2[/tex]

Step 5:

Substitute [tex]x=5[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(5)[/tex].

[tex]f(5)=-5^{2} +4(5)+12\\f(5)=-25+20+12\\f(5)=7[/tex]

Substitute [tex]x=5[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(5)[/tex] .

[tex]g(5)=-5+6\\g(5)=1[/tex]

Step 6:

Substitute [tex]x=6[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(6)[/tex].

[tex]f(6)=-6^{2} +4(6)+12\\f(6)=-36+24+12\\f(6)=0[/tex]

Substitute [tex]x=6[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(6)[/tex] .

[tex]g(6)=-6+6\\g(6)=0[/tex]

Step 7:

As per the given condition [tex]f(x)=g(x)[/tex].

(a). Substitute [tex]f(x)=-x^{2} +4x+12[/tex] and [tex]g(x)=-x+6[/tex] in above equation.

[tex]-x^{2} +4x+12=-x+6[/tex]

(b). Multiply with [tex]-1[/tex] on both sides.

[tex]x^{2} -4x-12=x-6[/tex]

(c). Shift the term [tex]x-6[/tex] to left hand side.

[tex]x^{2} -4x-12-x+6=0\\x^{2} -5x-6=0[/tex]

(d). Split the middle term in such a way that its sum is 5 and multiplication is 6.

[tex]x^{2} -(6-1)x-6=0\\x^{2} -6x+x-6=0\\x(x-6)+1(x-6)=0\\(x+1)(x-6)=0\\x=-1 ,6[/tex]

It is observed from the above solution that for [tex]x=6[/tex] both the functions [tex]f(x)[/tex] and [tex]g(x)[/tex] has same value.

Direct method:

[tex]f(x)=g(x)\\\Leftrightarrow-x^{2} +4x+12=-x+6\\\Leftrightarrow-x^{2} +4x+12+x-6=0\\\Leftrightarrow-x^{2} +5x+6=0\\\Leftrightarrow-x^{2} +6x-x+6=0\\\Leftrightarrow x^{2} -6x+x-6=0\\\Leftrightarrow x(x-6)+1(x-6)=0\\\Leftrightarrow(x+1)(x-6)=0\\\Leftrightarrow x=6,-1[/tex]

The table for the function [tex]f(x)=-x^{2} +4x+12[/tex] and [tex]g(x)=-x+6[/tex] is attached below.

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1. what is the y-intercept of the quadratic function f(x) = (x – 6)(x – 2)? (0,–6) (0,12) (–8,0) (2,0) https://brainly.com/question/1332667

2. which is the graph of f(x) = (x – 1)(x + 4)?  https://brainly.com/question/2334270  

Answer details:  

Grade: Middle school.  

Subjects: Mathematics.  

Chapter: Function.

Keywords: Function, Middle term split method, Binomial,Quadratic, Polynomial, Factorized, Perfect square, Zeros, Zeros of a function, Expression, Equation, x, x^2, x^3, -x^2+4x+12, -x+6, roots of equation.

Answer:

The answer would be D.

Step-by-step explanation:

How many license plates are possible using three letters followed by three digits if no letter can be repeated?

Answers

260 license plates because there are 26 letters in the alphabet and 10 single digit numbers, so 26x10=260.

Write x2 − 6x + 7 = 0 in the form (x − a)2 = b, where a and b are integers. (1 point)

(x − 4)2 = 3

(x − 3)2 = 2

(x − 2)2 = 1

(x − 1)2 = 4

Answers

x² - 6x + 7 = 0
x² - 6x = -7
x² - 6x + 9 = -7 + 9
(x-3)² = 2

Answer:

B. [tex](x-3)^2=2[/tex].  

Step-by-step explanation:

We have been given an equation [tex]x^2-6x+7=0[/tex]. We are asked to write our given expression in form [tex](x-a)^2=b[/tex].

First of all, we will subtract 7 from both sides of our given equation.

[tex]x^2-6x+7-7=0-7[/tex]

[tex]x^2-6x=-7[/tex]

Now, we will complete the square for left side of equation by adding the half the square of 6.

[tex](\frac{6}{2})^2=(3)^2=9[/tex]

Upon adding 9 on both sides of our equation, we will get:

[tex]x^2-6x+9=-7+9[/tex]  

[tex](x-3)^2=2[/tex]  

Therefore, our required equation would be [tex](x-3)^2=2[/tex] and option B is the correct choice.

Winning the jackpot in a particular lottery requires that you select the correct fourfour numbers between 1 and 6262 ​and, in a separate​ drawing, you must also select the correct single number between 1 and 1616. find the probability of winning the jackpot.

Answers

 

There are 2 drawings, in the 1st one we have to select correct four numbers between 1 and 62 while the 2nd one is to select the one single number between 1 and 16.

In the 1st drawing, the probability of success is 1 divided by the total number of 4 combinations that can be created from 62 numbers.

P1 = 1 / 62C4

P1 = 1 / 557,845

 

In the 2nd drawing, the probability of success is 1 divided by 16:

P2 = 1 / 16

 

Since the two drawings must be satisfied before you can win the jackpot, then multiply the two:

P = P1 * P2

P = (1 / 557,845) (1 / 16)

P = 1 / 8,925,520 = 1.12 x 10^-7 = 1.12 x 10^-5 %

 

Therefore the odd in winning this lottery is 1 in 8,925,520 chances.

A chord of a circle is any line segment whose endpoints are on the circle

A.True
B.False

Answers

A. True 
as long as the endpoints are inside the circle

Answer:

True

Step-by-step explanation:

Chord: It is that line segment which connect the two points on the circle.

It is a distance between two boundary points of circle.

Or we can say that

Chord: It is  a line segment which connect the two points on circle's circumference.

A chord of a circle is any line segment whose endpoints are on the circle.

Diameter of circle is a largest chord of circle.Diameter is that line segment which divides the circle into two equal halves.

Hence, we can say that given statement is true.

Which of the following words does not indicate multiplication? A. times B. of C. product D. more than

Answers

D. more than................................
Answer is D. more than
Reasons;
A times means Multiply by  
B Of means Multiply by  
C Product Means Multiply these numbers together
D means add  

Is it correct to say that a cube with side lengths 6cm have the same volume and surface area?

Answers

Yes it is correct. The surface area requires that you take the area of all the lateral faces, of which there are 6, and add them all together, giving you 216. The volume then requires that you take the length times the width times the height which is also 216. So odd, but yes, they are the same.

6/7 divided by 1 2/5

Answers

In order to multiply or divide a fraction by a mixed numeral, it is best to have them BOTH in fraction form. 1) We'll convert 1 2/5 into an improper fraction. (1×5)+2 = 7/5
Now 6/7 ÷ 7/5
2) when dividing by a fraction, it is the same to multiply by its reciprocal. So flip the second fraction and multiply them: 6/7 ÷ 7/5 = 6/7 × 5/7
3) reduce them: there is nothing on top that reduces with the bottom, so we simply multiply
4) multiply numerators, then multiply denominators and keep them in place: 6×5 = 30, 7×7 = 49
5) so our final answer is 30/49
Final answer:

The answer to 6/7 divided by 1 2/5 is 30/49 after converting 1 2/5 to an improper fraction and using the rule of multiplying by the reciprocal for division with fractions.

Explanation:

To solve the problem of 6/7 divided by 1 2/5, you first need to convert 1 2/5 into an improper fraction. This can be done by multiplying the whole number by the fraction's denominator and then adding the numerator, 1*5+2 = 7, so 1 2/5 becomes 7/5.

Next, when dividing by a fraction, you multiply by its reciprocal. The reciprocal of 7/5 is 5/7. Therefore, 6/7 divided by 1 2/5 equals 6/7 multiplied by 5/7.

When multiplying fractions, you multiply the numerators for the new numerator and the denominators for the new denominator, leading to (6*5)/(7*7) = 30/49.

Learn more about Dividing Fractions here:

https://brainly.com/question/1627825

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