Write the following proportion using colons. 7 is to 21 as 3 is to 9.

a. 7:21 = 3:9

b. 7:3 = 21:9

c. 21:7 = 3:9

d. 7:21 = 9:3

Factors of 32 and 50

Nora is running a race that is 26.2 miles. She is running at a speed of 8 miles per hour. She has completed 3/4 of the race. How much longer will it take Nora to finish the race?

Imagine that 30% of all U. S. Households own a dog, P (A) =.3 and that 10% of U. S. households own a Honda vehicle, P (B) =.1. In addition, you know that 60% of dog owners own a Honda, P (A|B) =.6.

Lana is using a can opener to open a can of soup. Every time she twists the knob of can opener the can opens 36 degrees. How many times does Lana have to twist the knob of the can opener to open a can of soup

Kevin is currently twice as old as his brother. If Kevin was eight years old two years ago, how old is Kevin's brother now?

The sum of a number and twice its reciprocal is 27/5. Find the number.

Airbus is a major manufacturer of aircraft in Europe. Each of their A330 planes costs around 40 million dollars and Airbus' revenue (money coming in) can be modeled as a function of the number of aircraft it sells.

Which function has an inverse that is a function? A. b (x) = x^2+3 B. d (x) = -9 C. - 7x D. p (x) = lxl

Is 6.013 less than 6.08

What is nine 91, 284 rounded to hundred thousand