Given points A(1, 3) and B (3, 7), which of the following represents the distance of  AB

√116
√6
√14
√20

Answers

Answer 1
distance of AB is √20
Hopes that helps

Related Questions

Prove that a parallelogram is a square iff its diagonals are both congruent and perpendicular

Answers

Consider the parallelogram shown below.
The lengths of the sides are a and b.
The lengths of the diagonals are 2x and 2y.

Because the diagonals are both congruent and perpendicular, therefore there are two right triangles as shown.
Note that x = y.
Because x = y, each right triangle is isosceles and has the angles 90°, 45° and 45°.

From the Pythagorean theorem,
For one right triangle,
a² = x² + y² = x² + x² = 2x².
For the other right triangle,
b² = y² + x² = x² + x² = 2x²

Therefore
a² = b²
a = b

It follows that all sides of the parallelogram are equal and each angle is
45+45 = 90°

Therefore the parallelogram is a square.

What number needs to be added to both sides of the equation in order to complete the square? x2+14x=−32

Answers

      49 is the number to be added to both the sides of the equation to complete the square.

   The equation given in the question is

[tex]x^{2} +14x=-32[/tex]

Which can be written as  [tex]x^{2} +2\times (7x)=-32[/tex]

We have to convert it into square form.

  Since the standard form of the equation in square form is

(a + b)² = a² + 2ab + b²

By comparing this standard equation with the given equation,

a = x

&

b = 7

By substituting the values of 'a' and 'x' in the standard square form,

x² + 14x + 7² = -(32) + 7²

x² + 14x + 49 = -32 + 49

(x + 7)² = 17

     Therefore, 49 should be added in both the sides of the equation in order to complete the square.

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Write an algebraic expression to answer the question below. if 10 calculators cost d dollars, how much, in dollars, does each calculator cost?

Answers

It should cost 8 dollars all together.

Tina is the top seller of the store. She earns a salary plus 2%. Tina's salary is $30,000 a year. This month her sales were $48,500. How much was Tina paid this month?

Answers

I'm assuming she gets 2% commission on sales and that she gets paid monthly from her yearly salary.

If the above is true, her monthly pay is calculated as follows:

Commission: 48500 * 0.02 = $970
Monthly salary: 30000 ÷ 12 = $2500

So monthly pay is $2500 + $970 = $3470

Find the inverse of g(x)

Answers

To find the inverse of function f(x), follow these steps.
1) Replace f(x) with y.
2) Switch x and y.
3) Solve for y.
4) Replace y with f^(-1)(x).

Line is parallel to line b and m<7=135. Find m<4

Answers

i think the answer might be 45

How to solve for quadratic equations with inequalities?

Answers

First solve the quadratic as you would an equation, so you will get two real zeroes p and q so that (x-p)(x-q)=0 is another way of expressing the quadratic. All quadratics can be represented graphically by a parabola, which could be inverted. When the x² coefficient is negative it’s inverted. If the coefficient of x² isn’t 1 or -1 divide the whole quadratic by the coefficient so that it takes the form x²+ax+b, where a and b are real fractions. The curve between the zeroes will be totally below the x axis for an upright parabola, and totally above for an inverted parabola. This fact is used for inequalities. An inequality will be <, ≤, > or ≥. This makes it easy to solve the inequality. If the position of the curve between the zeroes is below the axis then outside this interval it will be above, and vice versa. So we’ve defined three zones. x

q, and p

Please help! The very last question has 2 answers.

Answers

P1. C
P2. A
3.D i think
4. C and D maybe

The sum of two numbers is 67 . the smaller number is 9 less than the larger number. what are the numbers? larger number: smaller number:

Answers

Larger Number is L
Smaller Number is L -9
Larger # + Smaller # = 67

L + L - 9 = 67
2L - 9 = 67
2L = 67 + 9
2L = 76
L = 76/2
L = 38

Smaller Number = Larger Number - 9
38 - 9
Smaller # = 29

Check. .. 38+29=67 CORRECT!

Larger #: 38
Smaller #: 29

To solve the problem, two equations were set up based on the conditions given. After substitution and simple algebraic operations, the larger number was found to be 38 and the smaller number to be 29.

The question involves finding two numbers where the sum is 67, and the smaller number is 9 less than the larger number.

Let's define the larger number as x and the smaller number as y. According to the problem:

x + y = 67 (Equation 1)y = x - 9 (Equation 2)

Substitute Equation 2 into Equation 1:

x + (x - 9) = 67

2x - 9 = 67

2x = 67 + 9

2x = 76

x = 38

Now, we can find y using Equation 2:

y = x - 9

y = 38 - 9

y = 29

Therefore, the larger number is 38 and the smaller number is 29.

Harry enlarged a picture to a height of 30 inches. The original picture was 7" wide by 5" tall. Write a proportion to find the width of the enlargement and then solve for the width of the enlargement.

Answers

original height was 5" and it was enlarged to 30"

 find the ratio by dividing 30 by 5

30 / 5 = 6

 so ratio would be 1/6 meaning for every 1 inch of the original the new one is 6 inches

now you need to multiply the original width by 6 to find the new width

7" x 6 = 42"

 new width = 42"


simplify the expression (-2 -c) (-1)

Answers

(-1)(-2-c)

multiply -1 to both -2 & -c

-1 x -2 = 2
-1 x -c = c


2 + c is your answer

hope this helps

∠A
and ​
∠B
​ are vertical angles with 
m∠A=x
and 
m∠B=4x−30
.
What is
m∠A
?

Answers

Angle A would be anything that Angle B is. If the angles are vertical then they are always congruent. 

m∠A = [tex] \frac{b}{4} [/tex] + 30

Factoriza completamente las siguientes expresiones;

1. 3a²-a

2. 7ab³-14b

3. x³-x²+x

4. 12x³-xy²

5. 5x-6x²+7x³

6. 7a+8ab+9a²

7.3x²-3xy+6xy²

Answers

1. 3a²-a = a(3a - 1)

2. 7ab³-14b = 7b(ab^2 - 2)

3. x³-x²+x = x(x^2 - x + 1)

4. 12x³-xy² = x(12x^2 - y^2)

5. 5x-6x²+7x³ = x(5 - 6x + 7x^2)

6. 7a+8ab+9a² = a(7 + 8b + 9a)

7.3x²-3xy+6xy² = 3x(x - y + 2y^2)

How many gallons of rocket fuel containing 80% liquid oxygen must be mixed with 250 gallons containing 40% liquid oxygen to produce a mixture containing 70% oxygen?

Answers

Answer:

750

Step-by-step explanation:

for others

750 gallon of fuel at 80% to mix with the 250 gallon at 40% in order to get a mixture at 70% liquid oxygen.

What is Percentage?

percentage, a relative value indicating hundredth parts of any quantity

We need to find how many gallons of 80%

8x, since we don't know how many gallons

mixed with 250 gall of 40%: 0.40(250)

and we want a mix at 70%. The mix will include the 0.8x and the 0.4(250) Like this:

8x+0.4(250)=0.7x+0.7*250

Multiply on both sides of the equation

0.8x+100= 0.7x+175 Subtract 100 on both sides

0.8x= 0.7x+75

Subtract 0.7 on both sides

0.1x= 75

Divide both sides by 0.1

x= 750

You need 750 gallon of fuel at 80% to mix with the 250 gallon at 40% in order to get a mixture at 70% liquid oxygen.

Hence,  750 gallon of fuel at 80% to mix with the 250 gallon at 40% in order to get a mixture at 70% liquid oxygen.

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Lauren would like to have an average of 88 in her math class. There are five assignments with the following grades: 85, 100, 88, 80, 95. What grade will lauren need to make on the last assignment to meet her goal

Answers

80
85+100+88+90+95+80=528
528/6=80

Can someone please help me?

Answers

Answer:   -1.9

Step-by-step explanation:just add up the values for the weight change

(-1.8)+(0.9)+(-1.4)+(0.4)

-1.9

Which expression represents " 5 less than twice x " ?


1. 2x-5
2. 5-2x
3. 2(5-x)
4. 2( x-5)

Answers

The mathemtical expression for the word expression  5 less than twice x "  is 2x - 5 option (A) 2x -5 is correct.

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

It is given that:

The  word expression is:

5 less than twice x

Twice the x  = 2x

5 less than twice the x:

= 2x - 5

Thus, the mathematical expression for the word expression  5 less than twice x "  is 2x - 5 option (A) 2x -5 is correct.

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The sum of two numbers is
40
. One number is
4
times as large as the other.

Answers

x+4x=40. 5x=40. x=40\5. x=8 8 is one of the numbers. To find the other number we must multiply 8 by 4 which equals to 32. so the numbers are 8 and 32. check - 8+32=40.

(1-sin squared times tan is equal to ?

Answers

Recall the important trigonometric identities:

i) [tex]\sin^2x+\cos^2x=1[/tex]

ii) [tex]\tanx = \frac{\sinx}{\cosx} [/tex].


We want to simplify [tex](1-\sin^2x)\cdot \tanx[/tex].

Since, [tex]\sin^2x+\cos^2x=1[/tex], then [tex]1-\sin^2x=\cos^2x[/tex]. Thus, the expression 

                                 [tex](1-\sin^2x)\cdot \tanx[/tex]
becomes
            [tex]\displaystyle{ \cos^2x \cdot \frac{\sin x}{cosx} = \cos x \sin x.[/tex]


Answer: [tex] \ sinx \ cosx[/tex], or [tex]\displaystyle{ \frac{\sin2x}{2} [/tex].

What skills and practices were important for the growth and spread of early civilizations?

Answers

There were several skills and practices that were important and played a role in the growth and spread of early civilizations. Artisans were important because they made important items such as dishes, pots, clothing and baskets. Farming and trading was important so that people could grow crops and raise animals on their land. Government was also an important part of early civilization. An organized government issued rules and laws for the people so that things could run more smoothly.

For exercises 14-19, find an equation for the line that satisfies the conditions

Answers

Slope 4.2; y intercept (0, 3.4)

2X +105+ 8X -20+10 X +94+12 X -15=900 solve for x

Answers

(2x +8x +10x +12x) + (105 -20 +94 -15)=900

32x + 164 = 900
. - 164 -164

32x = 736
÷32x. ÷32x

x = 23

Which explains why the graphs of geometric sequences are a series of unconnected points rather than a smooth curve?

The range contains only natural numbers.
The domain contains only natural numbers.
Exponential bases must be whole numbers.
Initial values must be whole numbers.

Answers

Answer:

The correct answer is:

The domain contains only natural numbers.

Step-by-step explanation:

The graphs of geometric sequences are a series of unconnected points rather than a smooth curve because:

The domain contains only natural numbers.

As the geometric sequence us given as:

[tex]a_1=a,a_2=ar,a_3=ar^2,....[/tex]

where a is the first term of the sequence and r is the common ratio of the geometric sequence.

Also [tex]a_n[/tex] denotes the nth term of the sequence where n belongs to natural numbers that is the domain of the function is natural numbers.

The reason why the graphs of geometric sequences are a series of unconnected points rather than a smooth curve is because: B. The domain contains only natural numbers.

What is a geometric sequence?

A geometric sequence is typically a series of real and natural numbers that are calculated by multiplying the next number by the same number each time.

Mathematically, a geometric sequence is given by the expression:

[tex]a, \;ar, \; ar^{2} ....a_n[/tex]

Where:

r is the common ratio.a is the first term of a geometric sequence.

In a geometric sequence, the graphs of geometric sequences comprises a series of unconnected points rather than a smooth curve is because the domain is made up of only natural numbers.

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A square piece of tile with sides 12 inches is cut along a diagonal, What is the length of the diagonal rounded to the nearest inch?

Answers

Final answer:

To find the length of the diagonal of a square tile, you can use the Pythagorean theorem. Given that the side length of the tile is 12 inches, the length of the diagonal is approximately 17 inches when rounded to the nearest inch.

Explanation:

To find the length of the diagonal of a square tile, you can use the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. In this case, the two sides of the right triangle are the sides of the square tile, and the hypotenuse is the diagonal. Given that the side length of the tile is 12 inches, we can calculate the length of the diagonal as follows:

Square the length of one side: 12 x 12 = 144

Multiply the result by 2: 144 x 2 = 288

Take the square root of the result: √288 ≈ 16.97 inches

Rounded to the nearest inch, the length of the diagonal of the square tile is 17 inches.

Final answer:

The length of the diagonal of the square, rounded to the nearest inch, is 17 inches.

Explanation:

The length of the diagonal of a square can be found using the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

In this case, the two sides of the square are both 12 inches long. So, we have:

hypotenuse² = side1² + side2²

hypotenuse² = 12² + 12²

hypotenuse² = 144 + 144

hypotenuse² = 288

To find the length of the hypotenuse (or the diagonal), we take the square root of both sides:

hypotenuse = √(288)

hypotenuse = 16.97 inches (rounded to the nearest inch)

If f(x) = 2/x and g(x) = x^2 what is f of g

Answers

I think f of g = 2/x^2
is that right?

Answer:  The required value is [tex]f(g(x))=\dfrac{2}{x^2}.[/tex]

Step-by-step explanation:  We are given two functions as follows :

[tex]f(x)=\dfrac{2}{x},~~~~~~~g(x)=x^2.[/tex]

We are to find f of g, i.e., f(g(x)).

To find the required value, first we have to find the f value of the function g(x).

We have

[tex]f(g(x))=f(x^2)=\dfrac{2}{x^2}.[/tex]

Thus, the required value is [tex]f(g(x))=\dfrac{2}{x^2}.[/tex]

Eric has a gift card to his favorite restaurant. Every Tuesday he has the same meal at the restaurant. This table shows the balance of money in dollars left on Eric’s gift card at different times. Time (weeks) 2, 4 ,6 ,8 Balance ($) 125, 100, 75, 50 What is the equation that represents Eric’s gift card balance, where x represents the time and y represents the balance?

Answers

Answer:

y − 100 = -12.5 (x − 4)

Step-by-step explanation:

Pick two points on the line to calculate the slope:

m = (y₂ − y₁) / (x₂ − x₁)

m = (100 − 125) / (4 − 2)

m = -12.5

Next, use point-slope form to write the line equation.

y − y₁ = m (x − x₁)

y − 100 = -12.5 (x − 4)

How to simplify rational expressions

Answers

so, what we will do is, multiply both top and bottom, by the conjugate of the denominator, so, the denominator is 7 + 10i, so its conjugate is 7 - 10i then, let's do so.

[tex]\bf \textit{difference of squares} \\ \quad \\ (a-b)(a+b) = a^2-b^2\qquad \qquad a^2-b^2 = (a-b)(a+b) \\\\\\ \textit{also recall that }i^2=-1\\\\ -------------------------------\\\\[/tex]

[tex]\bf \cfrac{-3-7i}{7+10i}\cdot \cfrac{7-10i}{7-10i}\implies \cfrac{(-3-7i)(7-10i)}{(7+10i)(7-10i)}\implies \cfrac{(-3-7i)(7-10i)}{7^2-(10i)^2} \\\\\\ \cfrac{-21+30i-49i+70i^2}{7^2-(10^2i^2)}\implies \cfrac{-21+30i-49i+70\left( \boxed{-1} \right)}{7^2-\left[10^2\left( \boxed{-1} \right)\right]} \\\\\\ \cfrac{-21+30i-49i-70}{49-(-100)}\implies \cfrac{-91-19i}{149}\implies -\cfrac{91}{149}-\cfrac{19i}{149}[/tex]

use exponential form to evaluate log8(2)

Answers

Answer:  [tex]\frac{1}{3}[/tex]

Explanation:

let y = [tex]log_{8} (2)[/tex]

whenever we transfer base from  log from one side to other it will remain be base after shifting to the other side.

Change log to exponent form [tex]\log_xm=n\\m =x^{n}[/tex]

here we have n = y, m=2, x=8    by substituting the values

we will get

[tex]8^{y} = 2[/tex]          (1)

we can write 8 in power of 2 that is [tex]2^{3}[/tex]

we will rewrite the above equation (1) as

[tex]2^{3y} = 2[/tex]

we can equate the power when base is same then we will get

3y = 1

then

[tex]y=\frac{1}{3}[/tex]

The result of the logarithmic expression [tex]log _82=x[/tex] is 1/3

Let the given logarithmic function be x to have:

[tex]log _82=x[/tex]

This can be transformed into indices to have:

[tex]8^x = 2[/tex]

Solve the resulting indices for "x" a shown:

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

Cancel the base and equate the power to have:

[tex]3x = 1\\x = \frac{1}{3}[/tex]

Hence the result of the logarithmic expression [tex]log _82=x[/tex] is 1/3

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At a high school with 1100 students, Jake is in the 70th percentile for height. How
many students at the school are either the same height or shorter than Jake?

Answers

Note that a percentile tells us how many percents of numbers that are above the number at the percentile. So the 70th percentile tells us that 70% of the students are taller than Jake. That means 30% of the students are either at the same height or shorter than Jake.

30% of 1100 would be 0.3*1100 = 330.

So there are 330 students that are either at the same height or shorter than Jake.

what is the approximate value of q ? q+log26=2q+2

Answers

Attached the solution with work shown.
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