The altitude of a submarine is - 40 meters. If this is 15 meters less than its previous altitude, what was the previous altitude?

Cual es el mejor? 0.05, ½, 0.2

Simplify (-2/3) / (-7/4)

Erin's hourly salary went from $9.00 to $9.27. What percent raise did she recive

Tim wants to know what is gonna to be if he takes the bus for 30 minutes and go to the store for 20 and go to the gym for an hour how long is it going to take

What is the factored form of x^2-6x-16? (X-4) (x-2) (X+4) (x-2) (X-2) (x+8) (X-8) (x+2)

Suppose $x$,$y$, and $z$ form a geometric sequence. if you know that $x+y+z=18$ and $x^2+y^2+z^2=612$, find the value of $y$.

A manager checked production records and found that a worker produced 160 units while working 40 hours. In the previous week, the same worker produced 138 units while working 36 hours.

What is a balanced equation using numbers 9,7,2,1,6?

Part of the population of 10,800 hawks at a national park are building a nest. A random sample of 72 hawks shows that 12 of them are building a nest. Estimate the number of hawks building a nest in the population.

Olivia has $220 to buy presents for her 3 sisters and 2 nephews. She wants to spend $10 more on each sister than she spends on each nephew.