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3 years ago

5

Malia and her sister walk at a constant rate of 4 miles per hour. At this constant rate, how long should it take Malia and her s

ister to walk 3 miles?
A. 0.75
B. 1.25
C. 1.5
D. 12

1 answer:

natita [175]3 years ago

8 0

A is the answer as 3/4 is 0.75

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The first five terms of this series would be:

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Therefore, the first equation becomes:

$a\, \left(r^2 - 1\right) \, \left(r^2 + 1\right) = 150$ ..

Similarly, rewrite and simplify the second equation:

$\begin{aligned}&a\, r^3 - a\, r\\ &= a\, \left( r^3 - r\right) \\ &= a\, r\, \left(r^2 - 1\right) \end{aligned}$ .

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$\begin{aligned}\frac{a\, \left(r^2 - 1\right) \, \left(r^2 + 1\right)}{a\cdot r\, \left(r^2 - 1\right)} = \frac{150}{48}\end{aligned}$ .

Simplify and solve for $r$ :

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Calculate the sum of the first five terms:

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Calculate the sum of the first five terms:

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