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sergeinik [125]
3 years ago
8

Lizzy and Ella sold 10 boxes of cookies for $55.50. How much does each box of cookies cost? Show all your work and explain how y

ou got your answer.
Mathematics
1 answer:
densk [106]3 years ago
5 0
55.50/ 10 boxes =5.50 that is  cost of 1 box. 
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Kelly has a rectangular fish aquarium that measures 18 inches long, 8 inches wide, and 12 inches tall.
BigorU [14]

Answer:

a) The maximum amount of water the aquarium can hold is 1728 in³.

b) The cover has to be 624 in² big.

Step-by-step explanation:

a) The maximum volume of water that the aquarium can have is the same as the volume of the aquarium:

V=L×W×H=18 in × 8 in × 12 in= 1728 in³

b) The protective covering is used on the four walls of the aquarium. We have to find the areas of the four walls:

One of them is given by the multiplication of the width and the height:

A₁= W×H= 8 in × 12 in=96 in²

The other area is given by the multiplication of the length and the height:

A₂= L×H= 18 in × 12 in= 216 in²

As the fish aquarium is rectangular the area of the walls is given by:

A_T=2A_1+2A_2=2×96 in²+2×216 in²=624 in²

8 0
2 years ago
What type of relationship does a correlation coefficient of r = 0.45 indicate?
WINSTONCH [101]

Answer:

Strong positive correlation

Step-by-step explanation:

The closer the value of ρ is to +1, the stronger the linear relationship. For example, suppose the value of oil prices are directly related to the prices of airplane tickets, with a correlation coefficient of +0.8.

3 0
3 years ago
If Sarah turns 15 on august 27 and her graduation year is 2024 how old will she be when she graduates high school?
mart [117]

Answer:

She will be 17

Step-by-step explanation:

My sister is like that but she's graduating in 22'

4 0
2 years ago
Read 2 more answers
A) 5y +32=72<br> B) K/2+24=29
iren [92.7K]

Step-by-step explanation:

A)y=8

B)k=10

5y=72-32

5y=40

y=8

1/2k+24=29

k+48=58

k=58-48

k=10

3 0
3 years ago
Solve the equation for x.<br> X +9= -11
Vera_Pavlovna [14]

Answer:

x=-20

Step-by-step explanation:

x+9=-11

Subtract 9 from both sides. (-11-9=-20)

x=-20

7 0
3 years ago
Read 2 more answers
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