# What are the zeroes of 2x squared plus 6x minus 8

2 months ago

## Solution 1

Guest #3784
2 months ago
(2x-2)(x+4)=0 x=1 x=-4

## ðŸ“š Related Questions

Question
A ball is launched into the sky at 272 feet per second from the roof of a skyscraper 1,344 feet tall. The equation for the ballâ€™s height h at time t seconds is h = -16t2 + 272t + 1344. When will the ball strike the ground?
Solution 1

Time taken to reach the ball to the ground is 21 seconds. Â  Â  Â  Â  Â  Â  Â  Â  Â

Step-by-step explanation:

Given : A ball is launched into the sky at 272 feet per second from the roof of a skyscraper 1,344 feet tall. The equation for the ballâ€™s height h at time t seconds is .

To find : When will the ball strike the ground?

Solution :

The equation for the ball's height 'h' at time 't' is given by,

When the ball strike the ground the height of the ball became zero.

Substitute h=0 in the given equation,

Taking 16 common,

or

Solve by middle term split,

Reject t=-4 as time can never be negative.

Therefore, Time taken to reach the ball to the ground is 21 seconds.

Solution 2
Question
American cheese 0.45 to 4.26 what is the percent increase
Solution 1
For this case we have the following rule of three:
Â 0.45 ------> 100%
Â 4.26 ------> x
Â Clearing x we have:
Â x = (4.26 / 0.45) * (100)
Â x = 946.6666667%
Â Thus, the percentage of growth is:
Â 946.6666667 - 100 = 846.6666667
Â Rounding:
Â 846.7%
Â
the percent increase is:
Â
846.7%
Question
The average score on a standardized test is 750 points with a standard deviation of 50 points. What is the probability that a student scored more than 850 on the standardized test ?
Solution 1
The probability that student scored more than 850 we shall proceed as follows:
z=(x-Î¼)/Ïƒ
where:
x=850
Î¼=750
Ïƒ=50
thus
z=(850-750)/50
z=2
thus
P(x>850)=1-P(x<850)=1-P(z<2)=1-0.9772=0.0228

Solution 2

2%

Step-by-step explanation:

Question
Which of the following terms correctly describes 4:1?
Solution 1
Ratio? i don't know if thats exactly what it's asking but it's a ratio
Solution 2

Step-by-step explanation:

Question
WHAT IS 1/3 OF 97.50
Solution 1
The answer is 32.5. You can also do 97.5 * 0.333 = 32.46 (rounded up is 32.5).
Solution 2
Ans: 32.5 because you multiply it both together.....i really dont know i used the calculator XD sorry

Question
ella wants to use the Communicative property of multiplication to help find the product 5Ã—4. What number sentence can she use?
Solution 1
Five times four equals four times five
Question
A rectangle has a width of 8 centimeters and an area of 160 square centimeters a similar rectangle has an area of 250 square centimeters. What are the dimensions of the larger rectangle?
Solution 1
I'm a bit confused and there is not a lot of information given to this.

From what I know, the dimensions of the larger rectangle can be found from length x width = 250 square centimetres.

Any multiplication problem that equals 250 could work out for length x width.
Question
Which point best approximates the root of 45
Solution 1
To solve forÂ âˆš45 we shall proceed as follows:
We rewrite 45 as 3Â²Ã—5
thus
âˆš45=âˆš(3Â²Ã—5)
pulling terms out from under the radical we obtain
3âˆš5
thus the exact answer form is:
3âˆš5
or the decimal form is:
6.70820393
Question
What is the maximum for f(x)= 625-16x^2
Solution 1
The maximum is x=3.42
Question
Ming Ling Ching has 4 apples to the power of 12. How many apples does he/she have?
Solution 1
To find the amount of apples she has you must multiply 4x4x4x4x4x4x4x4x4x4x4x4

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368373
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324927
199835
130075
112100
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23213
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19607
17108
13966
10987
3389