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Nina [5.8K]
3 years ago
6

Find the product of (x2 -4xy + y2) (x – 2y) if x = 3 and y = 2​

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0

Step-by-step explanation:

Please refer to the attachment

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If 8 and 15 are sides to a right triangle, whats the missing side?
mr Goodwill [35]

Answer:

17

Step-by-step explanation:

a[2]+b[2]=c[2]

8*8+15*15=hypotenuse.

64+225=289

\sqrt{x} 289

hypotenuse=17

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1/2 pound : 5 days find the unit rate
juin [17]

Answer:

0.1

Step-by-step explanation:

To set this question up:

1/2 / 5

To solve this turn 5 into 5/1. Then multiply by the reciprocal. (1/5) 1/2 times 1/5 is 0.1

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What value of a makes the equation true a/45=6/9
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A scoop of ice cream is in the shape of a perfect sphere and it sits on top of a cone. The diameter of the sphere equals the dia
Inessa05 [86]

Answer:

(At least) 10 centimeters.

Step-by-step explanation:

The radius of the ice cream scoop is 2.5 cm and the radius of the cone is also 2.5 cm.

We want to determine the height of the cone such that it will fit all of the ice cream when it melts without any spilling.

First, we will find the volume of the ice cream scoop. The volume for a sphere is given by:

Since the radius is 2.5 cm, the volume of the full ice cream scoop is:

The volume of a cone is given by:

The radius of the cone is 2.5 cm. Therefore:

The volume of the cone should be equal to the volume of the scoop. So.

The height of the cone should be (at least) 10 cm.

5 0
3 years ago
Tickets for the homecoming dance cost $20 for a single ticket or $35 for a couple. Ticket sales totaled $3280, and 128 people at
ZanzabumX [31]

Answer:

16  singles, 56  couples

Step-by-step explanation:

There's two linear equations that we can make: one for money and one for people. Let the number of single tickets be  s  and the number of couple tickets be  c .

We know that the amount of money we make is  $  =  20 s + 35 c = 2280

We also how many people can come  P  = 1 s + 2 c = 128

We know that both  s  are the same and both  c  are the same. We have two unknowns and two equations, so we can do some algebra to solve for each.

Take the first minus twenty times the second: 20 s + 35 c  =2280

− 20 s − 40 c = − 2560

− 5 c = − 280 ⇒ c = 56

Plugging this back into the second equation, s + 2 c = s + 2 ⋅ 56 = s + 112 = 128 ⇒ s = 16

3 0
3 years ago
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