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3 years ago

Please help will give a lot of points on this

Mathematics

2 answers:

Stells [14]3 years ago

6 0

Answer:

x = 82.35

Step-by-step explanation:

42/51 = x/100

cross multiply, then you get

42*100 = 51*x

4200/51 = 51x/51

x = 82.35

Luda [366]3 years ago

4 0

Answer:

Step-by-step explanation:

x =121.42

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Write two expressions with unlike denominators whose sum is x-3/x+2, I need help it is confusing for me.

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Answer:

$\displaystyle A=\frac{x-2}{x+3}$

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Step-by-step explanation:

We need to find two expressions with unlike denominators what sum

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$\displaystyle A=\frac{x-2}{x+3}$

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$\displaystyle B=\frac{x^2-9}{(x+3)(x+2)}-\frac{x^2-4}{(x+3)(x+2)}$

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$\displaystyle B=\frac{x^2-9-(x^2-4)}{(x+3)(x+2)}$

Simplifying:

$\displaystyle B=\frac{-5}{(x+3)(x+2)}$

Thus the two expressions are:

$\displaystyle A=\frac{x-2}{x+3}$

And

$\displaystyle B=\frac{-5}{(x+3)(x+2)}$

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