MATHEMATICS MIDDLE SCHOOL

Solve for x x-xy=z Hint: reverse distribution to get x alone

Answers

Answer 1

Answer:

Answer: x = z/(1-y)

Work Shown:

x - xy = z

x*1 - x*y = z

x*(1 - y) = z .... distributive rule in reverse

x = z/(1-y) ..... divide both sides by (1-y)

The distributive rule is a*(b+c) = a*b+a*c. You can also say a*(b-c) = a*b-a*c. In this case, we factored out the common factor x.

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The difference of x and a number is 6. What is the other number?A) 6-x
B) x-6
C) 6-(x-6)
D) 6+x

Answers

The answer would be B because difference means subtracting so the answer would be x-6

Does this equation define a linear function y=3/x when x does not equal 0

Answers

$y= (3)/(x)$

no

the answer for this question is......no

Zoey made 5 and 1/2 cups of trail mix for a camping trip. She wants to divide the trial mix into 3/4 cup servings. Ten people are going on the camping trip. Can Zoey make enough 3/4 cup servings so each person on the trip has one serving?

Answers

No she can't. We could divide 5 1/2 cups by 3/4 cups but there is an easier way.

Let's change 3/4 to .75 and multiply by 10 since we need 10 servings.

.75 x 10 = 7.5 so she would need 7.5 cups or 7 1/2 cups
Since she only has 5 1/2 cups, she does not have enough.

A candy store sells 50 piecesof gum for every 40 pieces of
taffy. The store sold 250
pieces of gum yesterday. How
many pieces of taffy did they
sell?