3 years ago

Subtract 10 from k, then divide 4 by the result Do not simplify any part of the expression.

Mathematics

1 answer:

Alex787 [66]3 years ago

7 0

Answer:

4k-40

Step-by-step explanation:

you first bracket the expression k-10 you then multiply it by 4

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nlexa [21]

Answer:

D) division

Step-by-step explanation:

we know that a ratio is a quantitative relation between two numbers

so let's say

the ratio of boys to girls is 3:4

we know that for every 3 boys there are 4 girls

therefore it is a division operation

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2 years ago

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Solve for x. y=x-12 y= 14

masya89 [10]

Answer:

Step-by-step explanation:

Check answer:

14+12= 26

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3 years ago

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Erika worked 14 hours last week and 20 hours this week. If she earns $9 per hour, how much did she earn these two weeks?

kondor19780726 [428]

If you add 14 and 20 youll get her total amount of hours then you multiply her hours by 9 and your answer is 306%

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3 years ago

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Scott is using a 12 foot ramp to help load furniture into the back of a moving truck if the back of the truck is 3.5 feet from t

Elena-2011 [213]

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square root of 156.25

that's it

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3 years ago

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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3 years ago