Suppose y varies directly with x. Write a direct variation equation that relates x and y when y = 12 and x = 24.

Mathematics

1 answer:

AfilCa [17]3 years ago

4 0

Answer:

Step-by-step explanation:

x = 20.

You might be interested in

Your class has 26 students, which represents 5% of your school's enrollment. Your friend uses the proportion 5/100 =n/26 to find

dedylja [7]

26 is a part of the whole. the proportion should be set up:

(26/x) = (5/100) It's the overall enrollment that is being asked.

If you also need to solve: Cross multiply, 26(100) = 5x, 2600 = 5x, divide both sides by 5, 520 is the enrollment

7 0

3 years ago

What is the distance between -2/3 and 4/3 on a number line?

soldier1979 [14.2K]

If from the negative to the positive side, count how many dots are in between and add together. So it is 6 units apart or 6 dots apart.

8 0

3 years ago

What's 1.8499 x 10^9 in standard notation

maxonik [38]

you just have to move the decimal point 9 places to the right thats an easy trick to remember 1849900000

5 0

3 years ago

When the sum of \, 528 \, and three times a positive number is subtracted from the square of the number, the result is \, 120. F

aleksandr82 [10.1K]

Let $x$ be the unknown number. So, three times that number means $3x$ , and the square of the number is $x^2$

We have to sum 528 and three times the number, so we have $528+3x$

Then, we have to subtract this number from $x^2$ , so we have

$x^2-(3x+528)$

The result is 120, so the equation is

$x^2 - 3x - 528 = 120 \iff x^2 - 3x - 648 = 0$

This is a quadratic equation, i.e. an equation like $ax^2+bx+c=0$ . These equation can be solved - assuming they have a solution - with the following formula