All categories

3 years ago

P varies inversely with x. If P = 7 when x = 8, find the value of P when x = 7.

Mathematics

1 answer:

inna [77]3 years ago

3 0

Answer:

P = 8

Step-by-step explanation:

Given that P varies inversely with x then the equation relating them is

P = $\frac{k}{x}$ ← k is the constant of variation

To find k use the condition P = 7 when x = 8 , then

7 = $\frac{k}{8}$ ( multiply both sides by 8 )

56 = k

P = $\frac{56}{x}$ ← equation of variation

When x = 7 , then

P = $\frac{56}{7}$ = 8

You might be interested in

I'm trying to figure out y = 1/3 (x - 4)^2

marysya [2.9K]

Bzjdvjdvwkdhwofvtsowbfgwoehfwoejdgwoejdid

4 0

3 years ago

Fast I need to know what 20/22= x/11

sergij07 [2.7K]

Answer:

To Find => The value of x. in the equation below

$20 \div 22 = x \div 11$

Step-by-step explanation:

We will cross Multiply the digits

=>20 \div 22 = x \div 20

=>We'll cross Multiply

$20 \div 22 = x \div 11 \\ = > 22x = 20 \times 11 \\ = > 22x = 220 \\ = > x = 220 \div 22 \\ = > x = 10$

Hence, 10 is the required answer

4 0

3 years ago

Explain how to model the division of –20 by –5 on a number line.

kenny6666 [7]

Star at -20 and go back by -5 on the number line

3 0

3 years ago

What is the measure of angle A, in degrees, in the figure shown?

Serggg [28]

Answer:

12.7 degrees

Step-by-step explanation:

there are 180 degrees in a straight line, and since the angle opposite a is 167.3, we subtract that from 180 and we get 12.7

3 0

3 years ago

Which list orders the numbers from least to greatest?

s344n2d4d5 [400]

Are u sure you have the answers right? Fix them in a comment and I’ll answer

3 0

3 years ago

Read 2 more answers