3 years ago

If m= 7x and m = 3x + 20, what is the value of x? a 10 4 7 5

1 answer:

5 0

Equate the expressions for m.
7x = 3x + 20
4x = 20 . . . . . . . subtract 3x
x = 20/4 = 5 . . . divide by 4

The value of x is 5.

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vitfil [10]

Answer:

5 cm

Step-by-step explanation:

We know these are similar triangles, so we can use ratios of side lengths

x/40 = 4/32

Using cross products

32x = 4*40

32x = 160

Divide each side by 32

32x/32 = 160/32

x =5

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murzikaleks [220]

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gizmo_the_mogwai [7]

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Step-by-step explanation:

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KonstantinChe [14]

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Kamila [148]

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