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3 years ago

9

two mechanics worked on a car. the first mechanic worked for 5 hours, and the second mechanic worked for 15 hours. Together they

charged $2125. What was the rate charged per hour by each mechanic if the sum of the two earned was $185 per hour?

1 answer:

Fiesta28 [93]3 years ago

6 0

Answer: about 33 dollars

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Suppose a geometric sequence has a common ratio of 5. What is the next term after 9?

creativ13 [48]

Answer:

<h2> 45</h2>

Step-by-step explanation:

$a_{n+1}=a_n\cdot r$

So, if the common ratio is 5 the next term is always 5 times the previous term.

<h3>9·5 = 45</h3>

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Find the number in the proportion <br> 2/12=5/x

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Answer: x = 30

2/12 x 5/x

(Cross Multiply)

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A rectangular pyramid has a base area of 24in² and a volume of 48in³. What is the height of the pyramid?

alexgriva [62]

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3 years ago

Read 2 more answers

A gift shop sells 140 wind chimes per month at $90 each. The owners estimate that for each $5 increase in price, they will sell

guapka [62]

Answer: $95

Step-by-step explanation:

Te new price will be 90 + 5x, if the price increases "x" times

The number of wind chimes sold per month will become 140 - 7x

$\begin{aligned}&\text {Revenue, } \mathrm{R}(\mathrm{x})=(90+5 \mathrm{x})(140-7 \mathrm{x}) \\&R^{\prime}(x)=5(140-7 x)-7(90+5 x) \\&R^{\prime}(x)=700-35 x-630-35 x \\&R^{\prime}(x)=70-70 x=0 \\&70 x=70 \\&x=1\end{aligned}$

Therefore, if the price becomes (90 + 5(1)) = $95 per wind chime, then the revenue will be maximum

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What is the mode for the month?

Papessa [141]

Answer:the answer would be 20

Step-by-step explanation:

because it is use the most

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