AREA= 1/2 BASE * HEIGHT
9/10 = 1/2x*3/5
x= 9/10*10
x=9
Thus, the base is 9
Answer: the answer would be 12
Step-by-step explanation: it would be 12 because you are dividing the number uf players by the number of players on each team
"The sum of the number 'n' and 31" . . . . . (n + 31)
"17 times the sum" . . . . . 17(n + 31)
The equation . . . . . 17(n + 31) = 357
Look at the picture.
ΔABD and ΔBCD are similar, therefore:

Use Pythagorean theorem: