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NNADVOKAT [17]
2 years ago
14

What is the sum of the polynomials?

Mathematics
1 answer:
docker41 [41]2 years ago
5 0

Step-by-step explanation:

(6x + 7 + x²) + (2x² - 3) =

= 6x + 7 + x² + 2x² - 3 = 3x² + 6x + 4

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Hello so as you can see i got a ton of hw :) Helpp :')
olasank [31]

Answer:

Step-by-step explanation:

A. 1.13 and B is 1.37

8 0
3 years ago
Read 2 more answers
Sa = 2(pi)(r)(h) + 2(pi)(r^2) v = (pi)(r^2)(h) find the surface area and the volume.
LenKa [72]

If Sa=2πrh+2πr^{2}v=πr^{2}h then the surface area is πr^{2} h and volume is

(rh-2h)/2r.

Given Sa=2πrh+2πr^{2} v=πr^{2}h.

We have to find surface area and volume from the given expression.

Volume is basically amount of substance a container can hold in its capacity.

First we will find the value of v from the expression. Because they are in equal to each other, we can easily find the value of v.

2πrh+2πr^{2}v=πr^{2}h

Keeping the term containing v at left side and take all other to right side.

2πr^{2}v=πr^{2}h-2πrh

v=(πr^{2}h-2πrh)/2πr^{2}

v=πr^{2} h/2πr^{2}-2πrh/2πr^{2}

v=h/2-h/r

v=h(r-2)/2r

Put the value of v in Sa=2πrh+2πr^{2} v

Sa=2πrh+2πr^{2}*h(r-2)/2r

=2πrh+2πrh(r-2)/2

=2πrh+πrh(r-2)

=2πrh+πr^{2}h-2πrh

=πr^{2}h

Hence surface area is πr^{2}h and volume is h(r-2)/2.

Learn more about surface area at brainly.com/question/16519513

#SPJ4

6 0
2 years ago
What is the volume of the cube in cubic feet? please help
motikmotik

Answer:

512

Step-by-step explanation:

since its a cube, all the side lengths are even, so its just 8^3 or 8*8*8

8 0
3 years ago
A tutor invited 2 students to a study group. Those 2 students each invited
NemiM [27]
26 students are invited to the study group

8 0
3 years ago
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A washer and dryer cost $1065. The cost of the washer is two times the cost of the dryer. Find the cost of each item.
Over [174]

Answer:

$250

Step-by-step explanation:

The dryer costs x dollars

The washer costs 3x dollars

 

3x + x = 1000

4x = 1000

x = 250

 

The dryer is $250

5 0
3 years ago
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