Answer: 31.25
Step-by-step explanation:
Okie dokie, so if something is marked up by 20% it means, it is 120% the original number right?
So we can convert 120% into 1.2 to make solving this problem easier. :)
So if we want to find the original number, all we have to do is divide 37.5 by 1.2.
This gets us 31.25.
Answer:
35
Step-by-step explanation:
Simplify the following:
4×5 + 3 (7 - 2)
7 - 2 = 5:
4×5 + 3×5
4×5 = 20:
20 + 3×5
3×5 = 15:
20 + 15
| 2 | 0
+ | 1 | 5
| 3 | 5:
Answer: 35
Answer:
Slope is -3
Step-by-step explanation:
(0, -2) and (1, -5)
m= (y2-y1)/(x2-x1)
m= (-5+2)/(1-0)
m=( -3)/1
m = -3
Answer:
<u><em>y = -190 cos(π t / 120) + 195</em></u>
Step-by-step explanation:
<em>General form of a sinusoidal function: y = A cos(Bt - C) + D
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<em>Now generally a cosine function starts at the maximum value, so to start at the minimum value, flip the cosine function by making it negative.
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<em>A is the amplitude of the curve and will be the radius of the ferris wheel. Therefore, A = 380 / 2 = 190 feet.
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2π / B is the period of the curve and will be the time to complete one full rotation. The time to complete one full rotation is given as 4 minutes. Convert this into seconds to get period = 4 minutes * (60 seconds / minute) = 240 seconds. Therefore, B = 2π / period = 2π / 240 seconds = π / 120.
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C/B is the phase shift, or horizontal shift of the graph. Since the negative cosine function already starts at the minimum value, there is no phase shift so C/B = 0, meaning C = 0.
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D is the vertical shift and will be the height of the center of the ferris wheel. Therefore, D = 195 feet.
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Your final function will be:</em>
<u><em>y = -190 cos(π t / 120) + 195</em></u>
