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PSYCHO15rus [73]
3 years ago
13

Which of the following is a solution of x2 − 2x = −8? (6 points) Select one: a. negative 1 minus i square root of 28 b. 1 plus i

square root of 28 c. negative 1 minus i square root of 7 d. 1 plus i square root of 7
Mathematics
1 answer:
crimeas [40]3 years ago
3 0
X = 2 +- √4 -32 )/2 = 1 +-i√7

Answer is <span>d. 1 plus i square root of 7

Hope it helps!
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The arrow of this spinner was spun 60 times. On 45 out of 60 times, the arrow landed on a section with a multiple of 4. What was
Anna11 [10]

Answer:

3

Step-by-step explanation: You divide 45 and 60 then you mutiple the number by 4 then find your answer after you done solved this is how you solve it 45 divided by 60=0.75 mutiply by 4=3

5 0
2 years ago
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Samantha threw and apple out of the window fr the tenth floor of her apartment building. The equation y= -16t^2 +120 can be used
prohojiy [21]
Answer:
time taken = 2.74 seconds

Explanation:
We are given that:
y = -16t² + 120 models the situation where:
y is the floor number
t is the time taken for the apple to hit the ground

We are also given that the floor number (y) is 10. Therefore, all we have to do is substitute with y in the above equation and solve for the time t as follows:
y = -16t² + 120
10 = -16t² + 120
120 - 10 = 16t² 
110 = 16t²
t² = 110/16
t = ±√6.875
either t = 2.74 seconds ..........> accepted
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Hope this helps :)
3 0
3 years ago
Line t has an equation of y=10x-8. Line u is perpendicular to line t and passes through (-10,-6). What is the equation of line u
Pachacha [2.7K]

Answer: y=-\frac{1}{10} x-7

Step-by-step explanation: The slope of a perpendicular line is always negative and the reciprocal (opposite fraction) of the regular slope so the slope would be -\frac{1}{10}. If the line passes through (-10,-6) then the y intercept would be (0,-7) because every time x goes 10 right y goes down 1 because of the slope.

4 0
1 year ago
Pls help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
STatiana [176]
The answer to this question is  4v+8
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3 0
3 years ago
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Simplify the following. 3g^4 (2g^6 h^2)^3
Nady [450]

Answer:

24g^22h^6

Step-by-step explanation:

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3 years ago
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