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Irina-Kira [14]
3 years ago
5

I don't know how to do this. Can someone help me.

Mathematics
1 answer:
Alik [6]3 years ago
6 0
Break up the x-2 and use distributive property to multiply.

X(x3 +7x2 +2x -40) -2 (x3 +7x2 +2x -40)
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The population of a city has decreased by 33% since it was last measured. If the current population is 20,100, what was the prev
iren [92.7K]
The answer is 30,000
20,100 / 0.67 = 30,000
5 0
2 years ago
I NEED HELP PLZ ASAP!!!!! In right triangle ABCD above, x = A. 6 B. 8 C. 6√2 D. 10 E. 13
REY [17]

Answer:

x=6

Step-by-step explanation:

Since this is a right triangle we can use  the Pythagorean theorem

a^2 + b^2 = c^2

where a and b are the legs and c is the hypotenuse

x^2 + (x+2)^2 = (2x-2)^2

FOIL (x+2)^2 = x^2 +2x+2x+4 = x^2 +4x+4

FOIL (2x-2)^2 = 4x^2 -4x -4x+4 = 4x^2 -8x+4

Replacing these in to the equation

x^2 +x^2 +4x+4 = 4x^2 -8x+4

Combine like terms

2x^2 +4x +4 = 4x^2 -8x +4

Subtract 4 from each side

2x^2 +4x +4-4 = 4x^2 -8x +4-4

2x^2 +4x = 4x^2 -8x

Subtract 2x^2 from each side

2x^2 -2x^2+4x = 4x^2-2x^2 -8x

4x = 2x^2 -8x

Subtract 4x from each side

4x-4x = 2x^2 -8x-4x

0 = 2x^2 -12x

Factor out a 2x

0 = 2x(x-6)

Using the zero product property

2x =0  x-6 =0

x =0  x-6+6 = 0+6

x = 0  c=6

5 0
4 years ago
52 is 13% of what number
pentagon [3]
I believe the answer would be 400
because if you divide 52/0.13 you get 400
3 0
4 years ago
Read 2 more answers
Find the volume, in cubic centimeters, of the rectangular prism pictured below.
never [62]

Answer:

V= 18.75 cm^3

Step-by-step explanation:

  • The formula for finding the volume for <em>any</em> given shape is V = L x W x H.
  • So, multiply 2 1/2 cm x 2 1/2 cm x 3 cm.
  • This gives you 18.75 cm^3
6 0
3 years ago
Please help me happy new years
vodka [1.7K]

1) The quotient is 6.

2) The quotient is 9/10.

Hope it helps!

4 0
3 years ago
Read 2 more answers
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