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2 years ago

If 18 students make up 60% of the class

Mathematics

1 answer:

igor_vitrenko [27]2 years ago

3 0

What’s the question? I might be able to help

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Mr. Stein is purchasing a 2.25 pounds of meat that cost $2.80 per pound. How much will he receive if he pays the cashier $20.00

antoniya [11.8K]

He will receive $13.70.

You would have to multiply 2.25 by 2.80 to get 6.30, which is the total cost due. Subtract 6.30 from 20 to get your answer, 13.70, or the change Mr. Stein will receive.

4 0

4 years ago

Madelyn has two summer jobs. During the week she works in the grocery store, and on the weekend she works at a nursery. She gets

Dvinal [7]

Answer:

242$ in grocery store and 210$ in nursery

Step-by-step explanation:

4 0

3 years ago

Which is another ratio that can describe the black to white hats?

AlekseyPX

Answer:

5:4

Step-by-step explanation:

6 0

3 years ago

A. What is the approximate perimeter of the concrete region?

Nastasia [14]

You have a square with half circles along the sides.
The length of each side is 4ft, so the radius of the circles is 2ft

to calculate the perimeter you can calculate the circumference of 4 half circles = 2 complete circles
c=2r* $\pi$ =
2*2 $\pi$ =12.56
perimeter=2c=25.12=8 $\pi$

the area is the area of 2 circles+the area of the square
circle area= r^2* $\pi$ =2*2 $\pi$ =4 $\pi$
concrete area=circle area*2+square area
=4 $\pi$ *2+(4*4)
=8 $\pi$ +(4*4)
=8 $\pi$ +16ft
=41.12 ft^2

7 0

4 years ago

How many 1/3 cubes does it take to fill a box with a width of 2 2/3 inches length 3 1/3 inches and height 2 1/3

Paladinen [302]

Answer:

560

Step-by-step explanation:

I assume 1/3 is the side length of the cubes.

There's two ways to solve this:

1. Find the volume of the box, then divide by the volume of the cubes.

Or 2. Find the number of cubes per each side length, the find the volume in terms of cubes.

Either way, we need to convert the mixed fractions to improper fractions.

W = 2⅔ = (2×3+2)/3 = 8/3 inches

L = 3⅓ = (3×3+1)/3 = 10/3 inches

H = 2⅓ = (2×3+1)/3 = 7/3 inches

Using the first method, the volume of the box is:

V = (8/3 in) (10/3 in) (7/3 in) = 560/27 in³

The volume of a cube is:

V = (1/3 in)³ = 1/27 in³

So the number of cubes in the box is:

(560/27 in³) / (1/27 in³) = 560

Using the second method, the cubes per each side of the box is:

W = (8/3 in) / (1/3 in) = 8

L = (10/3 in) / (1/3 in) = 10

H = (7/3 in) / (1/3 in) = 7

So the number of cubes is:

8 × 10 × 7 = 560

7 0

3 years ago