A road has a gradient of 1/15 for 90 m. Then there is a horizontal section 130 m long.
The final section has a gradient of 1/25 for 200 m.
a. Find the total height gained from start to finish.
b. What is the average gradient from start to finish?

I did the first part of the question and got 14 m which is right but then I don't understand the second part (b.) Could someone explain it to me, please?

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2

angle efh= angle egh

answer is  

c.

36

step-by-step explanation:

mariah is studying the life cycle of the monarch butterfly. she must choose one stage in the cycle to present in science class: egg, caterpillar, chrysalis, or adult. she plans to make her choice randomly using a custom spinner divided into four sections. first, however, she spins the spinner 50 times to see the frequencies it generates.

stage times landed on

egg 10

caterpillar 12

chrysalis 15

adult 13

step-by-step explanation: