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Goshia [24]
2 years ago
12

Two rectangles have the same area of 70m2. It is given that the length of the first rectangle is 4m longer and the width is 2m s

horter than the dimensions of the second rectangle. Find the lengths of the sides of these rectangles.
Mathematics
1 answer:
NeX [460]2 years ago
7 0

Answer:

second rectangle

longer = 10

width = 7

first rectangle

longer = 14

width= 5

Step-by-step explanation:

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Solve the system of linear equations by substitution.<br><br> y = 2x + 8<br> y = -2x
posledela

Answer:

(- 2, 4 )

Step-by-step explanation:

y = 2x + 8 → (1)

y = - 2x → (2)

substitute y = 2x + 8 into (2)

2x + 8 = - 2x ( add 2x to both sides )

4x + 8 = 0 ( subtract 8 from both sides )

4x = - 8 ( divide both sides by 4 )

x = - 2

substitute x = - 2 into (2)

y = - 2(- 2) = 4

solution is (- 2, 4 )

6 0
2 years ago
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PLEASE HELP FOR 48 POINTS PLEASE!<br><br><br><br> show/explain your answer and work
pentagon [3]

Answer:

c  This is the direct variation

Step-by-step explanation:

The equation for direct variation is y= kx

Solving this for k

y/x =k

So y/x must be a constant

a.  9/3 =3

2/7 does not =3  so this is not a direct variation


b 1/2 = .5

-3/6 = -.5

This is not the same so this is not a direct variation


c.  27/9 =3

18/6 =3

9/3 =3

This is a direct variation with a constant of 3


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4 0
3 years ago
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1) Find x, if 1/3 of x is 14
BartSMP [9]

"of" means multiply      and         "is" means equal

1. \frac{1}{3}x = 14

                                x = 14(3)      <em>multiply both sides by 3 to isolate "x"</em>

                                x = 42

2. \frac{1}{5}x = 14

                                x = 14(5)      <em>multiply both sides by 5 to isolate "x"</em>

                                x = 70

3. \frac{2}{5}x = 14

                                2x = 14(5)      <em>multiply both sides by 5 </em>

                                2x = 70

                                  x = 35         <em>divide both sides by 2 to isolate "x"</em>

4. \frac{7}{8}x = 14

                                7x = 14(8)      <em>multiply both sides by 8 </em>

                                7x = 112

                                  x = 16         <em>divide both sides by 7 to isolate "x"</em>

Answers: 42, 70, 35, 16

5 0
3 years ago
Help please quickly
nadezda [96]
0.001 x 425 = .425

answer C. $0.425
3 0
3 years ago
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This equation will be in standard form if you subtract 2x2 from both sides and subtract 8x from both sides.
Lady_Fox [76]

i looked it up and it is false

6 0
3 years ago
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