3 years ago

The value of y varies directly with x. If x = 5 when y = 12, what is the value of x whon y = 30?

Mathematics

1 answer:

Brrunno [24]3 years ago

5 0

Step-by-step explanation:

y = kx, where k is a real constant.

When y = 12, x = 5.

=> (12) = (5)k, k = 2.4.

Therefore when y = 30,

x = y/k = (30)/(2.4) = 12.5.

The answer is 12.5.

You might be interested in

Express the following in standard form (0.000000045)^4

snow_tiger [21]

0.00000004 to the power of 4

Your answer would be <u>0</u>

5 0

2 years ago

Read 2 more answers

If the temperature is 7 degrees below zero and then rises 3 degrees,will the final temperature be positive or negative

sladkih [1.3K]

It would be negative cz it would add up to -4

6 0

2 years ago

Read 2 more answers

Which step should be done first to solve the equation for x?

ANTONII [103]

Answer:

OD Divide both sides of the equation by 2.

Step-by-step explanation:

4 0

3 years ago

What’s the least common multiple of 12 and 2

NNADVOKAT [17]

For example, for LCM (12,30) we find:

Using the set of prime numbers from each set with the highest exponent value we take 22 * 31 * 51 = 60. Therefore LCM (12,30) = 60.

7 0

2 years ago

The house has a form of a rectangle with one side two and a half times as long as the other side. a Construct the expression for

Nookie1986 [14]

Answer: $A=2.5x^{2}$

Step-by-step explanation:

1. Let's write the following formula for calculate the area of a rectangle:

$A=yx$

Where $y$ is the lenght (the longer side) and $x$ is the width (the shorter side).

2. You know that the length is 2.5 times as long as the other side, which indicates a multiplication. Then:

$y=2.5x$

3. So, you must substitute $y$ into the equation for calculate the area of the rectangle and then you must simplify.

4. Then, you obtain the following expression:

$A=(2.5x)(x)\\A=2.5x^{2}$

4 0

3 years ago