What number must you add to complete the square? X^2 +12x=40

Answers

Answer 1
You halve the linear coefficient, square it, then add that to both sides.  In this case:

(12/2)^2=6^2=36 so you would add 36 to both sides

x^2+12x+36=76  so that the left side is now a perfect square

(x+6)^2=76
Answer 2

Answer:

36

Step-by-step explanation:

(x+6)^2=76


Related Questions

1 2 3 4 5 6 7 8 9 10 Time Remaining 59:13 The image of a parabolic lens is traced onto a graph. The function f(x) = (x + 8)(x – 4) represents the image. At which points does the image cross the x-axis? (–8, 0) and (4, 0) (8, 0) and (–4, 0) (2, 0) and (–1, 0) (–2, 0) and (1, 0) Mark this and return Save and Exit Next Submit

Answers

Final answer:

The image crosses the x-axis at the points where the function f(x) = (x + 8)(x - 4) equals zero. The points are (-8, 0) and (4, 0).

Explanation:

To identify the points where the image of the parabolic lens crosses the x-axis, we should find the roots of the function f(x) = (x + 8)(x - 4). A function crosses the x-axis at its roots, the points where f(x) is equal to zero.

Setting the function equal to zero gives us (x + 8)(x - 4) = 0. We can see the polynomial is already factored. The roots of the equation are x = -8 and x = 4, since these values of x will make the equation equal to zero.

So, the graph of the function crosses the x-axis at the points (-8, 0) and (4,0). This means the correct option is: (–8, 0) and (4, 0)

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Find the area of each figure to the nearest tenth. Show your work, please

Answers

1. Area is split into one rectangle and one triangle

S = 110 * 140 + 90 * 70 / 2 = 18550

2. S = 6*4 / 2 = 12cm^2

3. S = (8 + 8 + 6) * 8 / 2 = 88

The width of a rectangle is one half it's length. The perimeter of the rectangle is 54 cm. What are the width and length of the rectangle?

Answers

width= 1/2x length=x
to find the perimeter, it's the width+width+length+length so:
1/2x+1/2x+x+x=54
3x=54
x=18
the length is 18 cm and the width is 9 cm
Let length of the rectangle = x.
Let width of the rectangle = x/2 (or 1/2 of x)

Remember that Area = 2L + 2W, so . . .

2x + 2(x/2) = 54

2x + (2/2)x = 54

2x + x = 54

3x = 54  -->  x = 54/3 --> x = 18

So the length of the rectangle is 18 cm and the width is 18/2 = 9 cm.


Choose the equation that represents the graph below: Graph of a line passing through points 0 comma 6 and 9 comma 0 y = −2x − 6 y = two thirdsx + 6 y = −two thirdsx + 6 y = 2x + 6

Answers

Y = -2/3 + 6 is a line that passes through those points.

Answer: y=[tex]\frac{-2}{3} x+6[/tex]

Step-by-step explanation: equation of line passing through (x1,y1) and (x2,y2) is given by

            y-y1=[tex]\frac{y2-y1}{x2-x1} (x-x1)[/tex]

              here (x1,y1)=(0,6) and (x2,y2)=(9,0)

            y-6=[tex]\frac{0-6}{9-0} (x-0)[/tex]

           y-6=[tex]\frac{-2}{3} x[/tex]

            y=[tex]\frac{-2}{3} x+6[/tex]

The graphs of f(x) = 5x and its translation, g(x), are shown on the graph.



What is the equation of g(x)?

A. g(x) = 5x – 9
B. g(x) = 5x – 10
C.g(x) = 5x – 9
D. g(x) = 5x – 10

Answers

The easiest way to test it is to sub in (2,15) and see which is holds.

Your function f(x) should be 5^x, instead of 5x

Answer should be g(x) = 5^x - 10, since it shifts f(x) downward by 10 units

The equation of the function is  , g(x) =  5x -10 ,  Option B is the right answer.

What is a Function ?

A function is a mathematical representation of an independent variable and a dependent variable.

The given function is

f(x) = 5x

As the y intercept is shifting from (0 ,1) to (0,-9)

therefore the function is translating 10 points down

therefore the equation of the function is

g(x) =  5x -10

Therefore Option B is the right answer.

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ANSWER QUICK AND EXPLAIN HOW TO SOLVE

Answers

[tex] \cfrac{a}{sinA}= \cfrac{b}{sinB} \ \ \to \\ sinB= \cfrac{b*sinA}{a} = \cfrac{14*sin35^o}{12}= 0.6692 \ \ \to \ m \angle B=42^o \\ \\ \\ m \angle C=180- m \angle A- m \angle B=180-35-42=103^o \\ \\ \\ \cfrac{a}{sinA}= \cfrac{c}{sinC} \ \ \to \ c= \cfrac{a*sinC}{sinA}= \cfrac{12*sin103^o}{sin35^o} \approx 20.4[/tex]

How does changing the function from f(x) = −5 cos 2x to g(x) = −5 cos 2x − 3 affect the range of the function?

Answers

The graph has been moved 3 units downward, making the range change. The range of f(x) is [-5,5], while the range of g(x) is [-8,2]. The picture is of both functions. f(x) is blue, g(x) is red.

Answer:

[-8,2]

Step-by-step explanation:

We are given that the function f(x) is transformed to the function g(x), where,

[tex]f(x) =-5 \cos 2x[/tex] and [tex]g(x) =-5 \cos 2x-3[/tex].

Since, the range of [tex]\cos x[/tex] is [-1,1].

Thus, the range of [tex]a\cos bx[/tex] is {-a,a].

So, the range of [tex]f(x) =-5 \cos 2x[/tex] is [-5,5].

As, we are translating the function f(x) 3 units downward to get g(x).

The graph of the function is shifted 3 units down.

So, the range of g(x) will be [-5-3,5-3] = [-8,2].

Hence, the range of [tex]g(x) =-5 \cos 2x-3[/tex] is [-8,2].

A new parking lot is being built for a medical office. the expression representing the number of parking spots in the new lot is 15x/4 -9 , where x represents the number of parking spots in the first row . how many spots are in the parking lot if there are 32 parking spots in the first row

Answers

did you ever get the awnzer

its 69---------------------------------

Do all rational equations have a single solution? why? is there a time when a rational equation doesn't have a solution?

Answers

Answer: All rational equations don’t necessary have a single solution however they do have solutions that can’t fulfill the answer. Any solution where the denominator is equal to zero results in an undefined equation.

the exterior angle of a regular polygon is equal to one third of the interior angle. calculate the number of sides of the polygon and give its name

Answers

The angle in a regular polygon is ((n-2)*180)/n with n being the number of sides. The exterior angles would be (360)/n since exterior angles add up to 360. Therefore, (360)/n= (((n-2)*180)/n)*1/3. Multiplying both sides by n, we get 360=((n-2)*180)*1/3. After that, we divide both sides by 180 and multiply both sides by 3 to get 6=n-2. Therefore, n=8 and it is an octagon

The area of the small triangle is 10.5 meters squared and the area of the larger triangle is 94.5 meters squared. If the altitude of the large triangle is 9, what is the altitude of the smaller triangle?

Answers

This is the concept of proportionality, the area scale factor of the triangles will be:
[Area of larger triangle]/[Area of smaller triangle]
=94.5/10.5
=9
but;
linear scale factor=sqrt[area scale factor]
=sqrt9
=3
the length of the smaller triangle will  be:
3/1=9/x
3x=9
hence;
x=9/3=3
the answer is 3 meters

Two points in the xy plane have cartesian coordinates (2.00, 24.00) m and (23.00, 3.00) m. determine (a) the distance between these points and (b) their polar coordinates

Answers

Final answer:

The distance between the two points is approximately 29.70 m. The polar coordinates of the points are approximately (24.20 m, 1.46 radians).

Explanation:

To find the distance between two points in the Cartesian coordinate plane, we can use the distance formula.

The distance between the points (2.00, 24.00) m and (23.00, 3.00) m is:

d = sqrt((x2 - x1)^2 + (y2 - y1)^2)

Plugging in the values, we get:

d = sqrt((23.00 - 2.00)^2 + (3.00 - 24.00)^2)

d = sqrt(441 + 441)

d = sqrt(882)

d ≈ 29.70 m

The polar coordinates of a point (x, y) can be found using the formulas:

r = sqrt(x^2 + y^2)

p = atan2(y, x)

Plugging in the values, we get:

r = sqrt(2.00^2 + 24.00^2)

p = atan2(24.00, 2.00)

r ≈ 24.20 m

p ≈ 1.46 radians

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Which graph represents y = |x2| − 3x − 4?

Answers

y = |x²| - 3x - 4. Since the absolute vale of x² is always positive, y will behave the same way as y = x² - 3x - 4.

It's a parabola open upward (a>0) with a axis of symmetry (-b/2a) = 3/2 and y intercept = 4 ( for x=0, y=4).
Moreover x intercepts (roots of the quadratic) → x₁ = 4 and x₂ = -1
All the above correspond to the last graph
Then it's the last graph

write the polynomial in standard form 4g – g3 + 3g2 – 2

Answers

they are placed in descending order of degree.

-g3 + 3g2 + 4g - 2

The required standard form of the polynomial is -g³ + 3g² + 4g - 2.

To write the polynomial in standard form 4g – g3 + 3g2 – 2

What is the equation?

the equation is the relationship between variables and is represented as y =ax + c   is an example of a polynomial equation.


What is a polynomial function?

A polynomial function is a function that applies only integer dominions or only positive integer powers of a value in an equation such as the quadratic equation, cubic equation, etc. ax+b is a polynomial.

The standard form of the polynomial equation is written equation is descending order of the exponents of the variable.
= 4g – g3 + 3g2 – 2

=  -g³ + 3g² + 4g - 2./

Thus, the required standard form of the polynomial is -g³ + 3g² + 4g - 2.

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What is the greatest common factor of the polynomial? 24x 3 − 16x 2 + 68x

Answers

24x^3 - 16x^2 + 68x

4x would be ur GCF

A right triangle has legs that are 10.1 inches and 12.2 inches long. what is the approximate length of the hypotenuse?

Answers

a^2+b^2=c^2

(10.1)^2+(12.2)^2=c^2
102.01+148.84=c^2
250.85=c^2
15.8=c

Hypotenuse is approx 15.8 inches

Answer:

A right triangle has legs that are 10.1 inches and 12.2 inches long. What is the approximate length of the hypotenuse?

6.8 inches

15.8 inches

22.3 inches

125.5 inches

B. 15.8 inches  is the correct option

Which number is not in scientific notation?
A) 9 ⋅ 10 to the power of 19
B) 7.8 ⋅ 10 to the power of 6
C) 1.45 ⋅ 10to the power of −7
D) 0.33 ⋅ 10 to the power −15

Answers

for scientific notation you want a whole number multiplied by 10 to a power

 so since D is a decimal ( 0.33) that is not scientific notation

I think the answer is A

Which sample fairly represents the population? Check all that apply. measuring the heights of every fiftieth person on the school roster to determine the average heights of the boys in the school calling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment observing every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear glasses sending a confidential e-mail survey to every one-hundredth parent in the school district to determine the overall satisfaction of the residents of the town taking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch

Answers

Answer:

The answer is the 2 and 5 ones. :)

Step-by-step explanation:

Final answer:

The samples that fairly represent the population are measuring every fiftieth person's height on the school roster, calling every third person on the soccer team's roster, and taking a poll in the lunchroom.

Explanation:

The samples that fairly represent the population are:

Measuring the heights of every fiftieth person on the school roster to determine the average heights of the boys in the school. This sample is representative because it ensures that every fiftieth person is included, providing a fair representation of the population.Calling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment. This sample is representative because it includes every third person, giving an unbiased representation of the population.Taking a poll in the lunchroom (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch. This sample is representative because it includes all the students who eat lunch in the lunchroom, ensuring that every student has an equal chance of being included in the sample.

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If it takes 4 people 4 days to dig a hole, how long does it take 2 people to dig a half-hole

Answers

the answer is 4 days. because if 2 people were digging a whole hole, it would take twice as long, being 8 days. digging half a hole, you would just cut the 8 in half, leaving 4 days for 2 people to dig half a hole.

What is the volume of a hemisphere with a diameter of 6 feet to the nearest hundredth of a cubic foot?

Answers

a hemisphere is 1/2 the volume of  a sphere

volume of  a sphere is 4/3pir^3

so 1/2 of that would be 2/3pir^3

d/2=r
6/2=r=3

v=2/3pi3^3
v=2/3pi27
v=2pi9
v=18pi
aprox
v=56.548667764616278292327580899031 cubic feet
round
v=56.55 cubic feet

The volume the hemisphere is 56. 55 cubic feet

what is the volume of the hemisphere ?

The volume of a hemisphere is the space occupied by the hemisphere.

Formula used to find volume of  the hemisphere is :

V = 2/3 × π × r ^3

Given : diameter = 6 feet

r = d/2 = 3 feet

V = 2/3 × π × 3 ^3

⇒ 2/3 × 22/7 × 27

V = 56.5486 cubic feet

round off to nearest hundredth is :

V = 56. 55 cubic feet

Hence , the volume of hemisphere is 56. 55 cubic feet .

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Two men, 400 feet apart, observe a balloon between them; it is in the same vertical plane as they are. The respective angles of elevation of the balloon are observed by the men to be 75°20' and 49°30'. Find x rounded to the nearest whole number.

Answers

Because x is not defined, it is assumed to be the height of the balloon.

Note that
75° 20' = 75.333°
49° 30' = 49.5°

From the figure shown below, obtain by definition,
a = x cot 49.5° = 0.8541x
b = x cot 75.333° = 0.2617x

Because a + b = 400 ft, therefore
0.8541x + 0.2617x = 400
1.1158x = 400
x = 358.49 ft

Answer: 358 ft (nearest whole number)

Answer:

471 ft.

Step-by-step explanation:

Factor the trinomial below.

x^2-5x-14

A. (x-2)(x-7)
B. (x+2)(x-7)
C. (x+2)(x+7)
D. (x-2)(x+7)

Answers

The answer is B.
Proof:
-7+2=-5
-7*2=-14

Also, when you FOIL it becomes
x^2-7x+2x-14
That simplifies to
x^2-5x-14

Answer:

The factored form is

[tex]x^2-7x+2x-14=(x+2)(x-7)[/tex]

Step-by-step explanation:

Given the trinomial

[tex]x^2-5x-14[/tex]

we have to factor the above trinomial.

[tex]x^2-5x-14[/tex]

By middle term splitting method

[tex]x^2-7x+2x-14[/tex]

Taking x common from first two terms and 2 from last two terms

[tex]x(x-7)+2(x-7)[/tex]

[tex](x+2)(x-7)[/tex]

which are required factors.

Hence, option B is correct.

What is the length Jc EF in the right triangle below.

Answers

By the Pythagorean theorem:

EF² = DE² - DF²
EF² = 39² - 15² = 1521 - 225 = 1296
EF = √1296 = 36 units
The length is E. 36 units

The weight of a full steel bead tire is approximately 800 grams, while a lighter wheel weighs only 700 grams. What is the weight of each tire in pounds? There are 453.592 grams in one pound. Round answers to 2 decimal places.

Answers

Answer:

800 is 1.74

700 is 1.54

Step-by-step explanation:

i just took the assignment and it was right

The weight of each tire in pounds is  1.76 pounds for the full steel bead tire and 1.54 pounds for the lighter wheel.

To find the weight of each tire in pounds, we'll first convert the weights from grams to pounds using the conversion factor provided (1 pound = 453.592 grams). Then, we'll round the answers to two decimal places.

Let's denote:

Weight of full steel bead tire = 800 grams

Weight of lighter wheel = 700 grams

Convert the weight of the full steel bead tire from grams to pounds:

[tex]\(800 \, \text{grams} \times \frac{1 \, \text{pound}}{453.592 \, \text{grams}} = 1.763698 \, \text{pounds}\)[/tex]

Rounded to two decimal places, the weight of the full steel bead tire is approximately 1.76 pounds.

Convert the weight of the lighter wheel from grams to pounds:

[tex]\(700 \, \text{grams} \times \frac{1 \, \text{pound}}{453.592 \, \text{grams}} = 1.543235 \, \text{pounds}\)[/tex]

Rounded to two decimal places, the weight of the lighter wheel is  1.54 pounds.

So, the weight of each tire in pounds is  1.76 pounds for the full steel bead tire and 1.54 pounds for the lighter wheel.

4(8x-8)=-192 what's that mean and can someone help me asap

Answers

This is algebra. 4 times whatever is in the parentheses (8x-8) has to be equal to -192. If you do the math, x= -7

I just need this really quickly please, I have 20 minutes till due.
What is 3/4/1/4 plz anyone help meee!!!!!!

Answers

i got it!!!!!!!!!!!!!! its 1875/10000

PLEASE HELP ILL GIVE A BRAINLIEST IF YOU ARE RIGHT!

Describe how to obtain the graph of the transformed function below from its parent function.

y=-1/2(x+1)^3-5

A.
The parent function y=x^3 is vertically shrunk by a factor of 1/2, reflected over the x-axis, shifted 1 unit to the left, and shifted 5 units down.
B.
The parent function y=x^3 is reflected over the x-axis, shifted 1 unit to the right, and shifted 5 units down.
C.
The parent function y=x^3 is vertically shrunk by a factor of 2, reflected over the x-axis, shifted 1 unit to the left, and shifted 5 units up.
D.
The parent function y=x^3 is vertically stretched by a factor of 1/2, reflected over the y-axis, shifted 1 unit to the right, and shifted 5 units down.

Answers

The answer is A.  The negative sign out front flips the function upside down (over the x axis), the +1 inside the parenthesis shifts it to the left one unit and the -5 moves it down 5 units.

Indicate in standard form the equation of the line passing through the given points. R(3, 3), S(-6, -6)

Answers

First find slope....

slope=m=(y2-y1)/(x2-x1)

m=(-6-3)/(-6-3)

m=-9/-9

m=1

Point slope form is y-y1=m(x-x1) where m=slope and (x1,y1) is any point on the line so using m=1 and (3,3) we have:

y-3=x-3 but the standard form is ax+by=c so we need to solve for the constant...

y-3=x-3  subtract x from both sides

y-x-3=-3  add 3 to both sides

y-x=0  and x should have a positive coefficient...divide both sides by -1

x-y=0

Convert 0.0000001 to a power of 10.

107
10−7
106
10−6

Answers

Since you have to move the decimal point the the right by 7 places to get the decimal point after the one.  You must multiply by 1/10 seven times, which is the same as:

10^-7

10^-7 = 0.0000001

when the number is a decimal the power is a negative number

12 times h equals 120 minus 36

Answers

Let's start at the beginning.
120-36=84.
84÷12=7 (we do this to figure out 12 times what equals 84, and now we know it's 7)
So 12×7=120-36

The correct answer is 7.
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