Maria's coin collection consists of 8 dimes, 5 nickels, 4 quarters and 3 pennies. what is the ratio of nickels to the entire collection?
a. 5: 20
b. 4: 20
c. 8: 20

What is always true about a positive integer raised to a negative odd power?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w

What percent of 18 is 24? and plz explain thx.