X^2+x=2?? how would i solve this??

Answers

Answer 1

Answer: x^2+x=2
first set to zero
x^2+x=2
subtract 2 from both sides
x^2+x-2=0
factor because if you have
x times y=0 then assume x and/or y=0 so

factor x^2+1x-2
to factor you find what 2 number add to 1 and multiply to get -2
the numbers are -1 and 2 so
it factors out to
(x-1)(x+2)=0
assume each is zero
x-1=0
add 1 to both sides
x=1

x+2=0
subtract 2 from both sides
x=-2

x=1 or -2

Answer 2

Answer: x²+x=2
x²+x-2=0
x= $(-1+- √(1-4*1*(-2)) )/(2) = (-1+- √(9) )/(2)= (-1+-3)/(2)$ x₁=-2 x₂=1
Answer: x₁=-2 x₂=1

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Solve and then use estimation to make sure your answer is reasonable. Kyle can read 22 pages of his book in an hour. Kyle read for 114.5 hours last summer.

How many pages did Kyle read last summer?

Answers

You would round the answer by rounding

114.5 rounds down to 100
22 rounds down to 20

100×20=2,000

The real answer is 2,519. This is close to 2,000, so this answer is reasonable.

114.5 x 22 = 2,519
she read about 2,500 pages last summer

At 5 seconds, an object's velocity is 9 meters per second. At 8 seconds, the object's velocity is 25 meters per second. Assuming a constant acceleration, what is the acceleration in meters per second per second of the object? (If necessary, round to the nearest hundredth.)

Answers

Acceleration = (change in speed) / (time for the change) .

Change in speed = (25 m/s - 9 m/s) = 16 m/s

Time for the change = (8 sec - 5 sec) = 3 seconds

Acceleration = (change in speed) / (time for the change)

= (16 m/s) / (3 sec)

= (5 and 1/3) m/s² .

(rounded to the nearest hundredth ... 5.33 m/s² . )

Last n one I promise loll

Answers

The first option is the answer you are looking for.

What would be the answer? 24

Answers

Answer:

John has 24 crayons.

Step-by-step explanation:

36-12= 24

u wud add 36 and 12, because it’s saying that john has 12 MORE than Hunter, who has 36. hope this helps :)

A triangle has side lengths of 10 inches, 24 inches, and 26 inches. is this a right triangle?

Answers

To check it we can use Pythagorean theorem.
$a^2+b^2=c^2$ , where c is the longest side.
Lets check it
Assume that a=10 and b= 24
$10^2+24^2=100+576=676$
Now lets compare with c^2=676
Its equal, so its right triangle.

In 1894, women were granted the right to vote in South Australia.By 2009, women in South Australia will have been able to vote for
A. 113 years.
B. 115 years.
C. 125 years.
D. 215 years.

Answers

2009 - 1894 = 115

That appears to be the same number as
the one that appears in Choice-'B'.

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