. Prove: If a and b are both unit vectors, then axb is a unit vector only when a and b are orthogonal.

How do I solve for a50 and s30?

as a part of a school contrst sarah and luis are aying a math game. sarah must pick a number between 1 and 50 and give luis cluez so he can write an equation to find her number. sarah says "if i subtract 5 from my number,multiply that dofference by 4, then increase that by 7, i get 35" what is sarahs number ?

Solve +2- 5= 10 Question Help: Video> Next Question 日

Please help me understand how to solve: 22n +1 the answer has to be a composite number

Please help solve it, thank you. Tim got his first paycheck from his new job, worked 25 hours, and earned 356ドル.25. How much is earned per hour?

zaida ran 8/9 miles and anita ran 1 1/3 miles. How many more miles did anita run that zaida solve using a number line and explain your solution.

I want all solved please thanks for first 3

The Taieri Plain in New Zealand is 6 feet below sea level (or -6). If you care standing 3 feet above sea level, is your elevation the opposite of the elevation of the plain? Describe the steps you would follow with a vertical number line to find the answer.

the full answer wasn't shown in the solution box, please provide the rest