Callie is doing a cycling challenge. Each day she cycles 10 km farther than she did the day before. At the end of the first week, Callie has cycled a total of 266 km. How far did Callie cycle on the first day of the week? How far did Callie cycle on the last day of the week?

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c

1/2(2*4)=6 $$- agahajakanajak