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Juliette [100K]
4 years ago
13

Please please please help

Mathematics
1 answer:
SVETLANKA909090 [29]4 years ago
4 0

Answer: ah yes of course 5 head

Step-by-step explanation:

lol

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70 POINTS!! You buy a video game system for $259 that, is 31% off the original price. What is the original price of the system t
Klio2033 [76]

Answer:

The students mistake was that he took 31% of the new price and added it to the new price. He should have taken 69% of his new price and added it to his new price. The original price was $375.36

Step-by-step explanation:

Lets work it out and compare our work. Since its 31% off, the formula we need to use is original times percent off equals the new price. Let x equal the original.

x*.69=259

Divide both sides by .69

(x*.69)/.69=259/.69

Divide

x=375.36

The original price was $375.36

The students mistake was that he took 31% of the new price and added it to the new price. He should have taken 69% of his new price and added it to his new price.

5 0
4 years ago
Read 2 more answers
I need help on all these 3 questions plz
DIA [1.3K]

Answer:

  1. Circumference
  2. Area
  3. Circumference

Step-by-step explanation:

Circumference would be if the situation is asking for the amount of something around the edge. For example, the number of tiles to be placed around the swimming pool would be asking for circumference.

Area would be if the situation is asking for the amount of something spread through the entire item. For example, the amount of water total in a swimming pool would be asking for area.

Hope it helps!

3 0
3 years ago
Divide the following polynomials. Then place the answer in the proper location on the grid. Write the quotient and remainder as
Westkost [7]

Answer:

x - 2 + \frac{2}{x-1}

Step-by-step explanation:

To solve for the quotient, perform long division with the polynomials and write a remainder if necessary.

       _x___-2_______

x - 1 |  x2 + 0x - 4

         x2 - 2x

       _______________

                -2x - 4

                -2x + 2

                _______________

                         -2

So the solution is x - 2 + \frac{2}{x-1}

5 0
4 years ago
Read 2 more answers
PLEASE HELP ME OUT I DONT GET THIS :(
svp [43]

Answer:

A

Step-by-step explanation:

Take any two points on the line

(-4,0) and (0,-1) find the slope

slope= y2-y1/x2-x1

=\frac{-1-0}{0-(-4)}=\frac{-1}{0+4}=\frac{-1}{4}

y-y1 = m(x-x1)

y-0=\frac{-1}{4}[x-(-4)]\\\\y=\frac{-1}{4}(x+4)\\\\y=\frac{-1}{4}*x+4*\frac{-1}{4}\\\\y=\frac{-1}{4}x-1

3 0
4 years ago
1. Consider a sphere with a radius of 18 inches.
makvit [3.9K]

Answer:

1. The surface area is A=1296\pi \:in^2 and the volume is V=7776\pi \:in^3.

2. The diameter of the sphere is d=\sqrt{\frac{2463}{\pi }}\approx 27.9999 \:cm.

Step-by-step explanation:

The surface area of a sphere is given by the formula

                                                   A=4\pi r^2

The volume enclosed by a sphere is given by the formula

                                                  V=\frac{4}{3}\pi\cdot r^3

where r is the radius of the sphere.

1. From the information given we know that the sphere has a radius of 18 inches.

The surface area is

A=4\pi \left(18\right)^2\\\\A= 4\cdot \:324\pi\\\\A=1296\pi \:in^2

and the volume is

V=\frac{4}{3}\pi \left(18\right)^3=\frac{4\pi 18^3}{3}=\frac{3^6\cdot \:2^3\cdot \:4\pi }{3}=7776\pi \:in^3

2. The diameter of a sphere is given by d=2r, where r is the radius of the sphere.

We know that the surface area is 2463 square centimeters. To find the diameter of the sphere first we need to find the the radius.

A=4\pi r^2\\\\2463=4\pi r^2\\\\4\pi r^2=2463\\\\r^2=\frac{2463}{4\pi }\\\\r=\frac{\sqrt{2463}\sqrt{\pi }}{2\pi }\approx13.99997 \:cm

and the diameter is

d=2\cdot \frac{\sqrt{2463}\sqrt{\pi }}{2\pi }=\sqrt{\frac{2463}{\pi }}\approx 27.9999 \:cm

8 0
3 years ago
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