Write the fraction or mixed number as a percent. 5.58
6.2 and 1/4
7.3²
8. 11/50
Find the percent of the number.
9. 20% of 90
10. 140% of 15
Find the whole.
11. 4% of what number is 2?
12. 125% of what number is 30

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170