What is difference between elimation and subtitution method?

What is the answer to a 90 degree angle added by a 180 degree angle

2x^3+2x^2-19x+20=0 find the roots of the polynomial equation

Mira bought 4 shirts for s dollars each but had a $5 coupon. Write an expression to represent the amount of money Mira will pay at the caah register

85 over 100 in simplest form

Ben exercises every 12 days and isabel every 8 days Ben and isabel both exercised today. how many days will it be until they exercise together again?

Thomas has an album that holds 600 baseball cards each page of the album holds 6 cards. If 45% of the album is empty, how many pages are filled with baseball cards

If you roll a number cube twice, what is the probability of getting a 4 and then a 3?

Howard read 1/16 of a book every day until he finished two books how many days did it take Howard to read both books

Worker Efficiency An efficiency study conducted for Elektra Electronics showed that the number of Space Commander walkie-talkies assembled by the average worker during the morning shift t hr after starting work at 8 a. m.

My question says "Round to the millions place by 4,563,009