3 years ago

Q is directly proportional to r. Q is 76 when r is 20. Work out q when r is 45

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

3 0

Answer:

171

Step-by-step explanation:

Q~r

find k (k is the constant)

Q=kr

76=k×20

76=20k divide 20 on both sides giving you

k=3.8

then Q=k×r

Q=3.8×45

Q=171

You might be interested in

Help on this please I’d appreciate it

maxonik [38]

<h2>Finding the y-intercept given the Graph of the Line</h2>

Answer:

The $y$ -intercept is $\boxed{3}$

Step-by-step explanation:

The $y$ -intercept of line is just the point where the $y$ -axis and the line. From the given line, we can see that the $y$ -axis and the line that models the temperature on a certain winter day since sunrise $(0,3)$ . Also, the question just asked us for the $y$ -coordinate of the $y$ -intercept so $3$

6 0

3 years ago

Divide the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending power

balandron [24]

By synthetic division, the quotient (4x^2 -10x -24)/(2x +3) is 2x -8.

___
You have not actually said what division you want performed.

4 0

4 years ago

Read 2 more answers

Find the difference between the polynomials:–3x+x3–2x2 and 4x3–2x2–4x

allsm [11]

Answer:

x-3x^3

Step-by-step explanation:

^ means to the power of btw

5 0

4 years ago

Your bank statement indicates that you are overdrawn on your checking account by $250. How much must you deposit to bring the ch

andrey2020 [161]

Answer:

you would have to deposit $432.

Step-by-step explanation:

it's actually pretty simple. all you have to do is add 182+250 which equals 432. if you want to check your work, add 432 to -250 and you should get 182.

3 0

3 years ago

What is the equation for the line of reflection <br>a. x= 3 <br>b. y = 3 <br>c. y = x <br>d. x = 6

Stells [14]

Answer:

The answer to that question is c. y = x

8 0

3 years ago