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2 years ago

Select the expression below that is equal to 5(11 - m).

Mathematics

2 answers:

Vlad1618 [11]2 years ago

7 0

The answer is c.
Do the distributive property to find the answer.
55 - 5m
Hope this helps

Sunny_sXe [5.5K]2 years ago

4 0

Answer:

Step-by-step explanation:

5*11=55

5*-m=-5m

Your welcome

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Use substitution
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2 years ago

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3 years ago

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2 years ago

△ABC ≅ △DEF, EF = x 2 - 7, and BC = 4x - 2.

Artist 52 [7]

Answer:

Therefore the value of x is 5.

Step-by-step explanation:

Given:

△ABC ≅ △DEF,

EF = x 2 - 7, and

BC = 4x - 2.

To Find:

the values of x. = ?

Solution:

△ABC ≅ △DEF ........Given

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

∴ BC ≅ EF ...................CPCTC

Substituting the values we get

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

Now By Factorizing we get

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

Therefore the value of x is 5.

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3 years ago