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3 years ago

How do you solve -10+2y=7

Mathematics

1 answer:

Eva8 [605]3 years ago

5 0

Answer

y = $\frac{17}{2}$

Step-by-step explanation:

-10 + 2y = 7

Add 10 to both sides of the equation

2y = 7 + 10

Add 7 and 10

2y = 17

divide each term in 2y=17 by 2

$\frac{2y }{2} = \frac{17}{2}$

Divide y by 7

y = $\frac{17}{2}$

<u>Hope this helps </u>

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Answer:

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Step-by-step explanation:

Given:

△ABC ≅ △DEF,

EF = x 2 - 7, and

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To Find:

the values of x. = ?

Solution:

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If two Triangles are congruent then the Corresponding Parts of Congruent Triangles are Congruent.

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Substituting the values we get

$4x-2=x^{2}-7\\x^{2}-4x-5=0$

Now By Factorizing we get

$x^{2}-5x+x-5=0\\x(x-5)+1(x-5)=0\\(x+1)(x-5)=0\\x+1=0\ or\ x-5=0\\x=-1\ or\ x=5\\x\ cannot\ be\ negative\\\therefore x=5$

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