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Amiraneli [1.4K]
3 years ago
13

Which expression is the simplest form of - (3x^3+x^2) +2 (x^3– 4x^2)?

Mathematics
2 answers:
Vanyuwa [196]3 years ago
8 0

Answer:

5x^3−7x^2

Step-by-step explanation:

i think at least

Aleks [24]3 years ago
3 0

Answer:

- x³ - 9x²

Step-by-step explanation:

Given

- (3x³ + x² ) + 2(x³ - 4x² ) ← distribute both parenthesis

= - 3x³ - x² + 2x³ - 8x² ← collect like terms

= - x³ - 9x²

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I am thinking of a number.... When I take HALF of my number subtract by 6 I get 5. What is my number?
Crank

answer- 1

step by step explanation-

6-1 =5

two Ka half one

8 0
3 years ago
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What is the distance between the points (14, 29) and (14, 58) in the coordinate plane?
ss7ja [257]
Distance= \sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1})^2} = \sqrt{(58-29)^{2}+(14-14)^{2}} =29

But because x_{1}=x_{2}, 

 and it is a vertical segment, 

it is enough to find abs(y_{2} -y_{1})=|58-29|=29
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3 years ago
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wariber [46]
I agree with the 14x all right, but the remainder of the other part is 178. I'm going to recheck my answer. I'm not confident about using synthetic division for this question. It is 57 years since I did something like this. If I was more confident, I would list the results of synthetic division because it is much easier to show than long division. I'm saying the answer should be 14x + 178.

7 0
3 years ago
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I need this urgently!! I need by 7:15!!
Sati [7]

The question is telling you that the length of the rectangle is 3 metres more than twice the width.

So let:

<em>w= width</em>

<em>L= length</em>

Because the length is 3 metres more than twice<em> </em>the width: <em>L= </em><em>2</em><em>w+</em><em>3</em>


They also tell you the perimeter is 48 metres.

<em>P= L+L+w+w</em>

So the equation of the perimeter is:

<em>48= (2w+3)+(2w+3)+2w +2w</em>

<em>48= 2(2w+3) + 4w</em>


To find w, expand and simplify.

<em>48= 4w+6+4w</em>

<em>48= 8w + 6</em>

<em>42= 8w</em>

<em>5.25=w</em>


Now that you know the width, plug in the value into the length equation:

<em>L= 2w+3</em>

<em>L=2(5.25)+3</em>

<em>L=10.50+3</em>

<em>L=13.5</em>


If I am wrong let me know! I hope this helps.

6 0
3 years ago
If a car travels at an average speed of x miles per hour, how far would the car travel in 90 minutes ?
antiseptic1488 [7]

Answer:

(1.5)x

Step-by-step explanation:

90 minutes = 1.5 hours therefore

if car travels x miles in 1 hour

then the care has to travel (1.5)x miles in 90 minutes

6 0
3 years ago
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