Simplify the expression: 5+12 divided by 2x2

Mathematics

1 answer:

zloy xaker [14]3 years ago

5 0

Do 2x2 first which is 4 and then 5+12 which is 17 . 17/4 is 4.25

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Step-by-step explanation:

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3 years ago

What is the value of x? Enter your answer in the box.

Grace [21]

The shapes are similar.
When two figures are similar, the ratios of the lengths of their corresponding sides are equal.
Therefore,
$\frac{42}{(15 + 42)} = \frac{x}{10 + x}$

Simplify:
$\frac{42}{57} = \frac{x}{10 + x}$
Cross multiply:
42(10+x) = 57x
420 + 42x = 57x
420 = 57x - 42x
420 = 15x
x = (420÷15)
x = 28