3 years ago

A runner runs at 7.6mph for 3 ½ hours. How many miles did he run?

Mathematics

1 answer:

kakasveta [241]3 years ago

3 0

Answer:

26.6 miles

Step-by-step explanation:

Simply multiply 7.6mph by 3.5 hours to cancel out the <em>hours </em>unit and to find you distance <em>miles</em>.

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zubka84 [21]

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Solution given:

$f(x)=\frac{x-16}{x^2+6x-40}$

$g(x)=\frac{1}{x+10}$

now

f(x)+g(x)= $\frac{x-16}{x^2+6x-40}+\frac{1}{x+10}$ ....(1)

now

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we get

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now substituting in equation 1 ,we get

f(x)+g(x)= $\frac{x-16}{(x+10)(x-4)}+\frac{1}{x+10}$

taking l.c.m

= $\frac{(x-16)+(x-4)}{(x-10)(x-4)}$

=now

opening bracket

$\frac{x-16+x-4}{x²-10x-4x+40}$

= $\frac{2x-20}{x²+6x-40}$

answer is :

B. $\bold b\frac{2x-20}{x^2+6x-40}$

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