What is 9 divide 9 with denominations

A tree casts a 20-foot shadow. Brian is 6 feet tall and casts a 4-foot shadow. How tall is the tree?

31,680 ft = mi A. 6 B. 18 C. 60 D. 2,640

There are 9860 students in a population of 62400 people. What percent of the total population is students?

Factor 5z^3+34z^2+53z-12 given that z+3 is a factor

2x-8=5x+3 what's the third step?

If 25students took an exam and 4 of them failed, what percnt of them passed?

98, 78, 84, 75, 91 What is the mean absolute deviation of his scores?

Write the sum as a mixed number with the fractional part less for 3 3/4 + 1 2/4

What is the percent of 3/14

A 7th grader student chooses a random sample of 50 out of 400 students. He finds that 7 students have traveled outside the United States. The student claims that over 50 of the 400 students have likely traveled outside the United States.