3 years ago

Write an expression for the area of this triangle

Mathematics

1 answer:

lara31 [8.8K]3 years ago

4 0

(x+7)x/2 is a possible expression for that area

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Use the algebra work equation:

$\frac{1}{tb}$ = $\frac{1}{t1}$ + $\frac{1}{t2}$ , where tb is the time to work together, t1 is the time it takes one person, and t2 is the time it takes the other person

Plug in the values we know:

$\frac{1}{tb}$ = $\frac{1}{5}$ + $\frac{1}{10}$

$\frac{1}{tb}$ = $\frac{4}{20}$ + $\frac{2}{20}$

$\frac{1}{tb}$ = $\frac{6}{20}$

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So, it would take them 3.33 hours when working together.

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