MATHEMATICS MIDDLE SCHOOL

The variable z is directly proportional to x. When x is 3, z has the value 48. What is the value of z when x = 7?

Answers

Answer 1

Answer:

Answer:

112

Step-by-step explanation:

Given z is directly proportional to x then the equation relating them is

z = kx ← k is the constant of proportionality

To find k use the condition x = 3 when z = 48

k = $(z)/(x)$ = $(48)/(3)$ = 16, thus

z = 16x ← equation of proportionality

When x = 7, then

z = 16 × 7 = 112

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Answers

Answer:

1200

Step-by-step explanation:

MULTIPLY AND DIVIDE

Joshua's cousin pledged $12 for a charity walk.If Joshua walked 3 miles, how much did his cousin pay per mile

Answers

This is a simple division problem. 12 divided by 3 is 4.

12÷3=4 this is he answer and how to write it out

Please help ASAP Which expression can be used to find 45% of 54? A.4/5 x 54 B.5/4 x 54 C. 9?20 x 54 D. 20/9 x 54

Answers

I am assuming 20/9 is supposed to be 9/20 because 45% as a fraction is 9/20

So the answer is D

Answer:

Step-by-step explanation:

i did it in my head

The length of the rectangle or classroom floor is 19 feet less than twice the width. which expression represents the area of the classroom floor?a) 6w-38

b) 2w (squared) -19w

d) 3w-19

Answers

The expression that represents the area of the classroom floor is 2w -19w

What is a rectangle?

'A plane figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square.'

According to the given sum,

Width = w

Length = 2w - 19

Area of a rectangle = length × width

= w × (2w - 19)

= 2w ( squared ) - 19w

Hence, we can conclude that the expression that represents the area of the classroom floor is 2w (squared) - 19w.

Learn more about rectangles here: brainly.com/question/6402323

#SPJ2

Answer:

Step-by-step explanation:

The area is calculated by length×width. In this case you don't know the length or width precisely so you say 2w (squared) because it's the width×width and you subtract 19 because then you actually have width×length.

5 x 1 1/2=? Plz help now
Plz

Answers

5 X 11 = 55. 55/2 = 27.5 so 27.5 is your answer.

joseph had a quarter of a cookie. ellen had a half of a different cookie. The peice joseph had was larger. how could ellens peice be smaller? explain.

Answers

My theory is the cookie could be smaller because Ellen's cookie might have been smaller as a full than Joseph's.

For example, Joseph's cookie may have 24 pieces, while Ellen's cookie may have been 4 pieces.

The Cookie that joseph was eating was larger. Half of a small cookie is smaller than a quarter of a larger cookie.

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