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(x/y)-z=rw Solve for x in the equation above.

A. X=y(z+rw)

B. X=rw(y-z)

C. X=rwy+z

D. X=rwy-z

Answer Explanation:

Given the equation (x/y)-z=rw, we make x the subject of the formula as follows:

(x/y)-z=rw

Add z to both sides of the equation

(x/y)-z+z=rw+z

(x/y)=rw+z

Multiply both sides by y

(x/y)*y=y(rw+z)

X=y(rw+z)

Rearranging the equation results in:

X = y(z+rw)

Therefore, the Correct Answer is A.

Q #1: Which of the following expressions represents the sum of three times a number and eight times a different number?

A. 3x+8y

B. 8x+3x

C. 3x-8y

D. 8x-3y

Answer Explanation

Let two numbers be x and y. Then

Three time a number=3x

Eight times a different number = 8y

Sum of the two is 3x+8y
Q #2: Which of the following is the mostly likely weight of a pencil?

A. 25 kg

B. 25 cm

C. 25 mg

D. 25 g

Answer Explanation

The most likely weight of pencil is 25 g, because a pencil is a lighter object which is measured in grams.
Q #3: Four friends are sharing a pizza. One friend eats half of the pizza. The other three friends equally divide the rest among themselves. What portion of the pizza did each of the other three friends receive?

A. 1/5

B. 1/3

C. ¼

D. 1/6

Answer Explanation

We assume the pizza to be full representing 1. One friend eats ½ of 1=1/2

The remaining portion of the pizza=1-1/2=2/2-1/2=1/2

Three friends share equally ½ of the pizza=1/2÷3=12*13=1/6

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