Pamela's age is two times jiri's age. the sum of their ages is 51. what is jiris age?

A 4 -ft vertical post casts a 12 -in shadow at the same time a nearby cell phone tower casts a 126 -ft shadow. How tall is the cell phone tower?

Can there be a linear trend if there is no positive or negative association

Sarah's brother pays her $ 0.10 per minute to watch his guinea pig. If Sarah want to earn $ 1.50, how many minute will she need to watch his guinea pig.

If a scientist mixed 20% saline solution with 70% saline solution to get 10 gallons of 30% saline solution, how many gallons of 20% and 70% solutions were mixed?

A vase hold nine flowers. If a florist had 270 flowers she wanted to put into vases, how many vasts could be in the last vase that isn't full?

What is the solution to the system of equations? 4x-8y=-16 x-2y=-8 a. Use the substitution method to justify that the given system of equations has no solution. b. What do you know about the two lines in this system of equations?

Of the items manufactured by a certain process, 20% are defective. Of the defective items, 60% can be repaired. a. Find the probability that a randomly chosen item is defective and cannot be repaired. b.

Find the value of x. (2x + 30°

Whats 9*2? i cant figure it out even with a calculator

Evaluate 3 - 24 - 8 + 32