Let v = (5,-2) and w = (4,10). Which of the following is true? Check all that apply.
A. V and w are perpendicular.
B. v. w = 20
C. The y-component of wis 10.
D. W = -2(-2,-5)

Pls! does anybody know a shortcut for answering these types of questions in the future?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%