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pishuonlain [190]
3 years ago
7

Determine whether y varies directly with x. If so, find the constant of variation k.

Mathematics
1 answer:
kumpel [21]3 years ago
5 0
Direct variation is y=kx, inverse variation is y=k/x....

-5y=-2x divide both sides by -5

y=2.5x

So this is a direct variation with a constant of 2.5
You might be interested in
The length of a rectangle is 2 ft shorter than 5 times its width, x. The area of the rectangle is less than 100 f12.
Ierofanga [76]

Answer:

A

Step-by-step explanation:

Area of rectangle  = length x width

length = 5x - 2

width = x

area = (5x - 2) × x

100 = 5x² - 2x

the width would be less than the area of the rectangle, thus the inequality sign to be used is <

5x² - 2x < 100

7 0
3 years ago
Ani was told to write the number four and eight hundredths. She wrote
JulsSmile [24]

Answer:

It would be 4.08, so Ani is wrong writing it as 4.8.

Step-by-step explanation:

So, with this, the number 4 is 4, a single-digit number. Anything below that has a decimal point before it. With the knowledge of there being 8 hundredths, first see this diagram explaining the terms for numbers after the decimal point:

0.1 --> 1 Tenth

0.01 --> 1 Hundredth

0.001 ---> 1 Thousandth

With this, we can see that it will be something of the likes of 4.01-4.09. Since there are 8 Hundredths, it would be 4.08, as 0.01 * 8 = 0.08.

Therefore, she is wrong because she wrote it as 4 and 8 tenths rather than 4 and 8 hundredths.

6 0
3 years ago
Of the 528 clients at Bernie's salon, 122 of them have black hair. What is the probability that a randomly selected client at Be
EleoNora [17]

The probability that a randomly selected client at Bernie's salon has black hair is 61 / 264.

<h3>What is the probability?</h3>

Probability measures the odds that a stated event would occur. The odds the event happens lies between 0 and 1.

The probability that a client at Bernie's salon has black hair = number of clients with black hair / total number of clients

122 / 528 = 61 / 264

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

5 0
2 years ago
A square pool is surrounded by a paved area that is 2 metres wide. If the area of the paving is 72m2, what is the length of the
likoan [24]

The length of the square pool is 8. 49cm

<h3>How to determine the area</h3>

Note that the formula for finding the area of a square is given as;

Area = length^2

We have

Area = 72 m²

Substitute into the formula

I^2 = 72

Find the square root of both sides

I= √72

I = 8. 49cm

The length of the square pool given as I is 8. 49cm

Thus, the length of the square pool is 8. 49cm

Learn more about area of a square here:

brainly.com/question/486778

#SPJ1

5 0
2 years ago
If EF = (7x + 8), FG = (9x - 8), and EG = 128, find the values of x, EF, and FG.
katrin [286]

Answer:

Answer:

x = 3.3

EF = 31.1

FG = 21.7

Step-by-step explanation:

Step-by-step explanation:

4 0
3 years ago
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