First answer is -7(-x-3) second is -2(5x-2) third is 16(x-10) fourth is -2(-9x-40)
<span>We can solve this problem by assigning x as the number of steps were the escalator is standing still. Going up 60 steps means that we must add 60 to x and going down means that we would have to subtract it by x. Since both ways are the same then,
60 + x = 90 - x
x = 15
Therefore, se would have taken 15 steps to either direction.</span>
Answer:
18.85 inches.
Step-by-step explanation:
We have been given that the radius of a smaller circle 3 inch. We are asked to find the circumference of smaller circle.
We know that circumference of a circle is equal to 
, where r represents radius of circle.
Therefore, the circumference of smaller circle is approximately 18.85 inches.
Answer:
Sorry for the bad handwriting :)
Step-by-step explanation:
For this question you can say d = 15 feet so we need the t then you can say :
15 = l 130 - 25t l ⇒ because of the absolute value you should say :
1) 130 - 25t = 15 ⇒ -25t = 15 - 130 ⇒ - 25t = -115 ⇒ t = 115/25 = 4.6 sec
2) 130 - 25t = - 15 ⇒ -25t = -15 - 130 ⇒ -25t = - 145 ⇒ t = 145/25 = 5.8 sec
so the answer is c :))
i hope this is helpful
have a nice day
