How to know whether to use sin or cos in physics?

A 54-inch board is cut into two pieces. One piece is two times the length of the other. Find the length of the shorter piece. The shorter piece is how many inches long?

What isnt a possible r value

Suppose you save $1 the first day of a month, $2 the second day, $4 the third day, and so on. That is, each day you save twice as much as you did the day before.

Which could be a first step in solving the equation 2.5x + 1.2 = 1.2x + 4.2 in an efficient way? A) Add 4.2 to each side B) Subtract 1.2 from both sides C) Divide both sides by 1.2x D) Multiply both sides by 2.5

Mitchell's electric car can go 180 miles on 2/3 of a full charge. How far can it go on one full charge?

What is 8.02 rounded to the nearest hundredth?

There are approximately 39.97 inches in 1 meter. How many meters are there in 240 inches

What does it mean to evaluate an expression

Determine, to the nearest tenth, the surface area of a tin can with a radius of 10 centimeters and a height of 12 centimeters.

assume that random guesses are made for 9 multiple choice questions on an SAT test, so that there are n=9 trials, each with probability of success (correct) given by p=0.6. find the indicated probability for the number of correct answers.