Which systems below would be most easily solved using the substitution method?

A. 5x + 7y = 45

2x - 7y = - 14

B. 2m - 3n = - 2

m + 4n = 24

C. 2x = - 3y + 4

x = 2y - 5

D. 7x + 2y = 16

-21x - 6y = 24

For each of these triples, find if they could be the lengths of the sides of a right triangle. A) 3, 4, 5 B) 0.5, 1.2, 1.3

chris is on a vacation at a lake house for the weekend and decided to rent a canoe for the day. they charge $10 service free plus $38 per hour and he can spend at most $200 how many hours can he rent the canoe

Determine the general solution: sin 2x=-1/2

Solve the proportion for the variable given. 4 / (v+10) = 6 / (v+6) A) - 1.8 B) - 18 C) - 5.1 D) - 2 Answer is B) - 18 (Not asking, just informing)

Let f (x) = 4x+1 and g (x) = 3/4. evaluate each expression symbolically. a) (f+g) (4) b) (f-g) (1/4) c) (fg) (5) d) (f/g) (0)

Round 421,906 to the nearest hundred thousand and to the nearest thousand

Jill arranged her baseball cards in 4 rows of 9 cards then she arranged the cards in 2 rows of 18 cars how many other ways can Jill arrange her baseball cards in equal rows

4, 16, 13, 52, 49, 196, 193, 772, _ What comes next?

What's 1 fourth of 1490

25 more than 50 as an expression