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3 years ago

12

A tortoise is walking in the desert. It walks for 3.75 meters at a speed of 3 meters per minute. For how many minutes does it wa

lk?

1 answer:

schepotkina [342]3 years ago

6 0

It would take the tortoise 1 minutes and 15 seconds

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Why must bowhunters use broadhead points when hunting big game?

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The 4th and 8th term of a G.P. are 24 and 8/27 respectively. find the 1st term and common ratio

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Answer:

see explanation

Step-by-step explanation:

The n th term of a geometric progression is

• $a_{n}$ = a₁ $r^{n-1}$

where a₁ is the first term and r the common ratio

given a₄ = 24, then

a₁ $r^{3}$ = 24 → (1)

Given a₈ = $\frac{8}{27}$ , then

a₁ $r^{7}$ = $\frac{8}{27}$ → (2)

Divide (2) by (1)

$r^{4}$ = $\frac{\frac{8}{27} }{24}$ = $\frac{1}{81}$

Hence r = $\sqrt[4]{\frac{1}{81} }$ = $\frac{1}{3}$

Substitute this value into (1)

a₁ × ( $\frac{1}{3}$ )³ = 24

a₁ × $\frac{1}{27}$ = 24, hence

a₁ = 24 × 27 = 648

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This would help you alot.

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