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stira [4]
3 years ago
14

John is digging a rectangular hole. The area of the rectangle is 8 square feet. John digs 4 feet down into the ground. What's th

e volume of John's hole in cubic feet?​
Mathematics
1 answer:
andreev551 [17]3 years ago
3 0

Answer:

32

Step-by-step explanation:

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3c-7c+5d pls help me
IrinaK [193]

Answer:

-4c + 5d

Step-by-step explanation:

3 - 7 = -4, so c is equal to -4.

Since there is only one value for d, d stays the same as 5d.

3 0
2 years ago
A tank in the shape of an inverted right circular cone has height 7 meters and radius 2 meters. It is filled with 5 meters of ho
iren [92.7K]

Answer:

The work required to empty the tank is 1,580,887 J

Step-by-step explanation:

Work = mass of chocolate × acceleration due to gravity × height of chocolate

Volume of tank (cone) = 1/3πr^2h = 1/3 × 3.142 × 2^2 × 7 = 29.33 m^3

Mass of hot chocolate = density of hot chocolate × volume of cone = 1100 kg/m^3 × 29.33 m^3 = 32,263 kg

height of chocolate = 5 m

Work = 32,263×9.8×5 = 1,580,887 J

3 0
2 years ago
Read 2 more answers
Which of the following is not an equivalent expression to -12 - 7x?
Georgia [21]

-7x + 12 is not an equiv. expression because one of the - signs in the original expression has been changed to +.

8 0
3 years ago
Read 2 more answers
Write three hundred twenty-eight, four hundred seven in expanded form.
aleksandrvk [35]
I think the answer is 300+20+8
and 400+7    :)
8 0
3 years ago
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PLEASE HELP ME IM BEGGING YOU IT IS EASY Consider the two groups listed below. Which statement describes the sets? (2 points) ho
miskamm [114]
Note that mailing address is unique, but houses are not, meaning that you can't have house A and house B both referencing the same address.

So, in order to have a valid function, any two points on the function cannot have the same x value that lands on different y.

With this property mentioned, it's clear to see that
(house, address) is NOT a function; however, (address, house) is a function, since same x lands on multiple y values is a valid onto function. (a house that have multiple addresses)
5 0
2 years ago
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