Please solve Consider the congruence ≡8 (mod 847)
ax ≡ 8 (mod 847).

Choose a value for such that (,847)=1. Then solve the congruence
I want a to be 10, a =10

The ratios of boys to girls on a soccer league is 2: 5. if there are 28 boys, how many girls are playing soccer? extra points! will mark as brainiest asap

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

Find two numbers if their sum is 91 and the ratio is 6: 7?