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2 years ago

Find the sum of 8a+2b-4 and 3b-5. write. in expanded form and then standard form

Mathematics

1 answer:

finlep [7]2 years ago

7 0

Answer: 2^3

Step-by-step explanation:

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Neeeeed helpppppp please

MissTica

Answer:

Scale factor = 7

Step-by-step explanation:

Dilation with scale factor to map HEFG to DABC will be,

Scale factor = $\frac{\text{Dimension of Image DABC}}{\text{Dimension of preimage HEFG}}$

= $\frac{\text{Length of CD}}{\text{Length of GH}}$

Length of CD = Distance between two points C(0, -7) and D(-7, 0)

= $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

= $\sqrt{(-7-0)^2+(0+7)^2}$

= $\sqrt{98}$

= $7\sqrt{2}$

Length of GH = Distance between G(0, -1) and H(-1, 0)

= $\sqrt{(-1-0)^2+(0+1)^2}$

= $\sqrt{2}$

Scale factor = $\frac{7\sqrt{2} }{\sqrt{2} }$

= 7

6 0

2 years ago

Help plz! loads of points!

babunello [35]

I think it would be ''(A) 5 cm on the map represents 50m in chicago''

I know it would be a ...it could also be (B)

but i know that its a for a fact

hope i helped ya

if not im very sorry

3 0

3 years ago

Can someone help me? I’ll reward points + brainalist

posledela

Step-by-step explanation:

THE ANSWER IS C. 31 INCHES

5 0

2 years ago

Read 2 more answers

The area of a rectangle is 52 m2 , and the length of the rectangle is 5 m less than double the width. Find the dimensions of the

kotegsom [21]

52m^2= 2[(x-5)+(x)]. 52m^2= 2(2x-5). 52m^2=4x-10

7 0

3 years ago

Write an equation of the line that passes through (18, 2) and is parallel to the line 3y−x=−12

rodikova [14]

First isolate the "y" in the equation.

2y - x = -12 Add x on both sides

2y - x + x = -12 + x

2y = -12 + x Divide 2 on both sides to get "y" by itself

$y = \frac{-12 +x}{2}$

$y = -6 + \frac{x}{2}$

Your slope is $\frac{1}{2}$ .

For the equation of the line to be parallel to the given equation, the slopes have to be the same. So the parallel line's slope is also $\frac{1}{2}$

y = mx + b

$y = \frac{1}{2}x + b$

To find "b", you plug in the point (18,2) into the equation

$y = \frac{1}{2}x + b$

$2 = \frac{1}{2}(18) + b$

2 = 9 + b Subtract 9 on both sides

2 - 9 = 9 - 9 + b

-7 = b

Your equation is:

$y =\frac{1}{2}x - 7$

8 0

3 years ago

Find the sum of 8a+2b-4 and 3b-5. write. in expanded form and then standard form​

Find the sum of 8a+2b-4 and 3b-5. write. in expanded form and then standard form