3 years ago

Simplify x+x^2+2x^2-3x

Mathematics

1 answer:

lukranit [14]3 years ago

3 0

3x^2-2x should be the correct answer

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the amount of gasoline at a gas station changes from 58,432.4 gallon to 56,475.2 gallon from 2:00 pm to 4:00 pm. what rational n

jarptica [38.1K]

Answer:

I take it you mean the average gallons lost an hour, in which case you would do 58,432.4 - 56,475.2 to get 1,597.2 to which you divide by 2 getting your final answer of 978.6

4 0

3 years ago

You randomly draw a marble from a bag, record its color, and then replace it. You draw a red marble 3 out of 20 times. What is t

Aliun [14]

Answer:

$P(Red) = \frac{3}{20}$

Step-by-step explanation:

Given

$Red = 3$

$Trials = 20$

Required

Determine the experimental probability of next marble being red

This is calculated as:

$P(Red) = \frac{n(Red)}{Trials}$

Substitute values for n(Red) and Trials

$P(Red) = \frac{3}{20}$

8 0

3 years ago

Which expression represents "2 times the sum of 4 and y?"

aksik [14]

2*(4+y)
The answer is c.
Its two times the sum so two is on the outside and 4 and y come after the word sum so its addition.

5 0

2 years ago

A ball is launched into the air from a height of 12 feet at time t = 0. The function that models this situation is h(t) = -2t2 +

tresset_1 [31]

Answer:

(a) 24 ft

(b) 2.5 s

Step-by-step explanation:

At t=2

h=-2(2)^{2}+10(2)+12=12+20-8=24 ft

Therefore, height after 2 s=24 ft

(b)

As it hits the ground, t is maximum and at maximum t, we differentiate the function to have

h=-4t+10 and h=0 hence

4t=10 hence t=10/4=2.5 seconds

7 0

2 years ago

Read 2 more answers

What is the length of the hypotenuse of the triangle?

atroni [7]

Answer:

$\sqrt{65}$

Step-by-step explanation:

$a^{2}+b^{2}=c^{2}$

$4^{2} +7^{2} =c^{2}$

$16+49=c^{2}$

$65=c^{2}\\\sqrt{65}=c$

8 0

1 year ago