A.Directions: Solve the system of equations by substitution and elimnination. Check your solutions.

1. (x + 2y = 7
(x - y = 4 (by elimination)

3. y - x = 3x + 2
2x + 2y = 14 - y (bySubstitution)

I gave brainlest the answer is correct plss help this..​

Answer:

14

Step-by-step explanation:

divide by 10

Answer:

14

Step-by-step explanation:

You have the proportion:

3 cm: 30 millimeters

divide both sides by 3

1 cm: 10 millimeters

Then, multiply both sides by 14

14cm: 140 millimeters

So 14 centimeters are in 140 millimeters

Answer:

43 is the answer

Step-by-step explanation:

i just added till i got it

Answer:

First, let me rewrite the problem as I see it:

Step-by-step explanation:

8c(2) - c + 3 + 2(c + 2) - c + 2

=

16c + 9

Answer:

10 c to the second power -2c+5

Step-by-step explanation:

Answer:

y = 17/2

Step-by-step explanation:

7y − 4 = 9y + 13 − 4y

Simplify both sides of the equation.

7y - 4 = 5y + 13

Subtract 5y from both sides.

2y - 4 = 13

Add 4 to both sides.

2y = 17

Divide both sides by 2.

y = 17/2

I hope this helps! Feel free to ask any questions!

Answer:

The reasons:

Answer:

You can use option (D) to find the area of rectangle

(D) y = - x²+32x

Step-by-step explanation:

If you can substitute your values you can find your answer

THANK YOU....

PLZZ GIVE ME A BRAINLIEST TAG

The expression for the given rectangle with width x and area y is[tex]y = -x^{2} +32[/tex]

it is given that

area of the rectangle = y

width of the rectangle = x

so the length of the rectangle will be = area/width = [tex]\frac{y}{x}[/tex]

perimeter = 64

Perimeter is the sum of all four sides of the rectangle.

we can say that,

2(length + breadth) = 64

[tex]2( \frac{y}{x} + x)=64\\\\[/tex]

[tex]\frac{y}{x} + x= 32[/tex]

[tex]\frac{y + x^{2} }{x} = 32[/tex]

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

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

therefore, the expression for the area of the rectangle,

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

to get more about rectangles refer to the link,

https://brainly.com/question/25292087

Answer: 1.32 x 10^4

Step-by-step explanation:

The scale used is 1 inch : 8 feet.

The blueprint is a smaller version of an original larger image. The scale would be used to reduce the size of the actual dimensions of the rectangle.

In order to determine the scale, divide the actual dimensions of the rectangle by the dimensions of the rectangle. #

Scale = 96 feet / 12 inches = 8

64 feet / 8 inches = 8

This means that the scale is 1 inch represents 8 feet.

To learn more about scale drawings, please check: https://brainly.com/question/26388230

#SPJ1

Answer: 13.18

Step-by-step explanation:

Answer: 13.18

Step-by-step explanation: But if rounded to the nearest tenth its 13.2

hope that helped

Answer:

Divide by 7 on both sides

Step-by-step explanation:

7x is a coefficient so you divide by 7

Answer:

4(3x-2)

Step-by-step explanation:

Have a great day :)

Answer:

X= -2

Step-by-step explanation:

Answer:

yes it is X= -2

Answer:

10,11,12

Step-by-step explanation:

X+x+1+x+2

X+2(x+1)=x+2 + 20

X +2x+2 = x+22

3x+2 = x+22

2x +2 = 22

2x = 20

X = 10

Numbers are 10,11,12

Double checking 10+2*11 = 32

12+20 = 32

So it works

Answer:

12 are blue, I hope it helps!

Answer:

g(-7) = -16

Step-by-step explanation:

g(-7) = (-7 + 5)2 - 12

= -2(2) - 12

= -4 - 12

= -16

Answer:

A. Medera turned the phone off while playing in the soccer game

Step-by-step explanation:

Answer:

A.

Step-by-step explanation:

Hope this helps :)

Answer:

(-2,4), (0,4), (-4,-2) and (2,-2)

Step-by-step explanation:

Given

[tex]A = (-5,9)[/tex]

[tex]B = (-2,9)[/tex]

[tex]C = (-8,0)[/tex]

[tex]D = (1,0)[/tex]

[tex]Translation: 2\ units\ right\ \& \ 3\ units\ down[/tex]

[tex]Dilation: \frac{2}{3}[/tex]

Required

Determine the vertices of the image RSTU

When a coordinate (x,y) is translates b units right, the new coordinate is: (x + b, y)

So, translation 2 units right gives:

[tex]A = (-5,9)[/tex] ---> [tex]A' = (-5 + 2,9) = (-3,9)[/tex]

[tex]B = (-2,9)[/tex] ---> [tex]B' = (-2 + 2,9) = (0,9)[/tex]

[tex]C = (-8,0)[/tex] ---> [tex]C' = (-8 + 2,0) = (-6,0)[/tex]

[tex]D = (1,0)[/tex] --- > [tex]D' = (1 + 2,0) = (3,0)[/tex]

When a coordinate (x,y) is translates b units down, the new coordinate is: (x, y-b)

So, translation 3 units down gives:

[tex]A' = (-3,9)[/tex] ---> [tex]A" =(-3,9-3) =(-3,6)[/tex]

[tex]B' = (0,9)[/tex] --> [tex]B" =(0,9-3) =(0,6)[/tex]

[tex]C' = (-6,0)[/tex] --> [tex]C" =(-6,0-3) = (-6,-3)[/tex]

[tex]D' = (3,0)[/tex]--> [tex]D"=(3,0-3) = (3,-3)[/tex]

Lastly, dilation of 2/3 gives:

[tex]New = Old * \frac{2}{3}[/tex]

[tex]R = (-3,6) * \frac{2}{3} = (-2,4)[/tex]

[tex]S = (0,6) * \frac{2}{3} = (0,4)[/tex]

[tex]T = (-6,-3) * \frac{2}{3} = (-4,-2)[/tex]

[tex]U = (3,-3) * \frac{2}{3} = (2,-2)[/tex]

Hence, the coordinates of RSTU are: (-2,4), (0,4), (-4,-2) and (2,-2)

Answer:

Step-by-step explanation:

Divide 27 by 0.3 to get your answer

Answer:

27.30 because your basically adding 30 as in cents.

Step-by-step explanation:

Answer:

87

Step-by-step explanation:

Here g is equalling -1, so substitute -1 for g in the equation. The equation is now 59 - 28(-1) = blank. Multiply 28 by -1 to get -28.

The equation is now 59 - (-28). There are two negatives in a row, so that becomes a plus sign. That makes it 59 + 28. Simply add to get 87 as your answer.

Graphical

Step-by-step explanation:

They have graphical pattern

Answer:

[tex]900\times 3^m[/tex] = 100

Step-by-step explanation:

The number of visitors is modeled by the expression [tex]900\times 3^m[/tex]

Where m is the number of months after the number of visitors was measured.

We need to evaluate the above expression for m = -2.

So,

[tex]900\times 3^m=900\times 3^{-2}\\\\=900\times \dfrac{1}{3^2}\\\\=900\times \dfrac{1}{9}\\\\=100[/tex]

At m = -2, the value of the above expression is equal to 100.

Answer:

x should equal 1

Step-by-step explanation:

Answer:

85

Step-by-step explanation:

What id id was divide 249 by three, then add to two the number and subract two, then you could add the odd numbers you got each time to get 249.

249/3=83

83+2+85

83-2=81

81+83+85=249

Answer:

B!

Step-by-step explanation:

we know that (x-5) and (y-6) must add up to 129 because 180-51 is 129

now let's plug in the values to see

51-5= 66 63-6 = 57

57+66 is 123, not this one, let's repeat the same step

77-5 is 72, 63-6 is 57, these added is 129

Answer:

Step-by-step explanation:

y = a(x-4)^2 + 4

Plug in (2,-8) and solve for a:

-8 = a(2-4)^2 + 4

a = -3

y = -3(x-4)^2 + 4