B
Step-by-step explanation:
B is the correct answer If I'm correct.
Answer:
(x + 1)(x + 9) = 0
Step-by-step explanation:
After you subtract 16 from both sides, you get ...
x² +10x +9 = 0
When you factor this equation, it becomes ...
(x +1)(x +9) = 0
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For the zero product property to be of any use, the form of the equation must be a product that equals zero.
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<em>Comment on the other answer choice</em>
(x -1)(x -9) = 0 = x² -10x +9 . . . . . the x term is different from that in the given equation. It has the wrong sign.
Answer:
v = 3.64 ft/s
Step-by-step explanation:
Given that,
Radius of a carousel, r = 18 feet
It takes 31 seconds to complete revolution.
We need to find the linear speed of the carousel at its outside edge. Distance covered is equal to the circumference of the circle.
d = 2πr
d = 2π × 18 = 113.09 feet
Let v is the linear speed. It can be given by :
So, the linear speed of the carousel is 3.64 ft/s.
Angle 2 and Angle 4 are same-side interior angles, which are supplementary.
(2x + 10) + (4x + 80) = 180
6x + 90 = 180
6x = 90
x = 15
Hope this helps!
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