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maxonik [38]
3 years ago
6

A girl wants to count the steps of a moving escalator which is going up. If she is going up on it, she counts 60 steps. If she i

s walking down, taking the same time per step, then she counts 90 steps. How many steps would she have to take in either direction, if the escalator were standing still?
Mathematics
1 answer:
Luba_88 [7]3 years ago
3 0
75. As she is going up, 15 stairs have been passed by the escalator moving. When she goes down same thing
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vova2212 [387]

Answer: OPTION C

Step-by-step explanation:

To solve the exercise shown in the image attached, you need to subtract the functions f(x) and g(x).

Keeping the above on mind, you have:

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4 0
3 years ago
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If the initial figure is 10 and then it is dilated with a scale factor of 2 what's the perimeter of dilated figure?
Gelneren [198K]

Answer:

20

Step-by-step explanation:

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8 0
2 years ago
CAN SOMEONE HELP ME PLEASEEE
Tom [10]

Answer:

a. 45 degrees

b. 315 degrees

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3 years ago
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bogdanovich [222]
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3 years ago
20×^2-30x-40 solve for x
Oduvanchick [21]

Answer:

x = 12

Step-by-step explanation:

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360 - 30 x = 0

Subtract 360 from both sides:

(360 - 360) - 30 x = -360

360 - 360 = 0:

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Divide both sides of -30 x = -360 by -30:

(-30 x)/(-30) = (-360)/(-30)

(-30)/(-30) = 1:

x = (-360)/(-30)

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(-12)/(-1) = (-1)/(-1)×12 = 12:

Answer:  x = 12

4 0
3 years ago
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