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kipiarov [429]
2 years ago
5

Help plzzzzzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
andreyandreev [35.5K]2 years ago
4 0

Answer:

20??? wow I feel stupid I forgot how to do everything

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Find the volume of a pyramid with a square base, where the side length of the base is
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Answer:

2896.34 cubi centimetres

Step-by-step explanation:

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3 years ago
What's -20 times -10 times -1 times 0
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Zero.
Anything times zero is zero.
-20 * -10 = 200
200 * -1 = -200
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3 years ago
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Solve. x 2 /7
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The length of a rectangle is 2 units more than the width. The area of the rectangle is 63 units. What is the length, in units, o
Keith_Richards [23]

Answer:

Length = 9units

Width = 7units

Step-by-step explanation:

It is said that the length is 2units more than the width

Assume that the width is x, then the length will be 2 + x

ie

Width = x

Length = 2 + x

Area of the rectangle = 63units

Area of rectangle = l * b

l - length of the rectangle

b - width of the rectangle

A = l * b

63 = (2 + x) * x

63 = ( 2 + x) x

63 = 2x + x^2

Let's rearrange it

x^2 + 2x - 63 = 0

Let's find the factor of 63

A factor that can be multiplied to give -63 and that can be added to give +2

Let's use -7 and +9

x^2 - 7x + 9x - 63 = 0

Separate with brackets

( x^2 - 7x) + ( 9x - 63) = 0

x( x - 7) + 9(x - 7) = 0

( x + 9)(x - 7) = 0

( x + 9) = 0

( x - 7) = 0

x + 9 = 0

x = -9

x - 7 = 0

x = 7

Note: the length of a rectangle can not be negative

So therefore,

x = 7

Length = 2 + x

= 2 + 7

= 9units

Width = x

= 7units

7 0
3 years ago
Calculate the cost of 8 cans if 2 cans of olive oil cost 24
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Answer:

96

Step-by-step explanation:

2 cans/24  = 8 cans/x

24 times 8/2 = 96

5 0
2 years ago
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