Please help me on this asap this is very important :D

Mathematics

1 answer:

Anettt [7]3 years ago

4 0

Answer:

78.5

Step-by-step explanation:

area of a circle is $\pi r^{2}$

3.14( $5^{2}$ )=78.5

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A verbal phrase for 6n-4 is

Savatey [412]

A verbal phrase for 6n-4 is the difference of 6 times a number and 4

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4 years ago

Write an equal ratio for the fraction 5/7

jeyben [28]

Answer:

To find an equal ratio, you can divide or multiply by the same number on the top and bottom of the fraction. For example...

5 x 2 = 10

7 x 2 14

So, by multiplying 5 and 7 by 2, 10/14 is another fraction that is equal to 5/7. Here's some more possible answers if you need them...

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7 x 3 21

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3 years ago

A company that makes barber scissors has found that the sales volume for barber scissors is directly proportional to the size of

Mice21 [21]

Answer:

20,000 pairs of barber scissors.

Step-by-step explanation:

The sales volume V for barber scissors is directly proportional to the size S of the sales force and inversely proportional to the price P of the scissors.

In other words, we can write that:

$\displaystyle V = \frac{kS}{P}$

Where k is the constant of proportionality.

19,440 pairs were sold in 2013, when there was 54 salespeople and the price was $20 a pair. Hence, V = 19440 when S = 54 and P = 20. Substitute and determine the value of k:

$\displaystyle \begin{aligned} (19440) &= \frac{k(54)}{(20)} \\ \\ 19440 &= \frac{27}{10}k \\ \\ k &=\frac{10}{27}(19440) = 7200 \end{aligned}$