Solve system by elimination

20x-12y=-20

-10x+6y=10

Kevin had 13 coins in his pocket. all of his coins are either dimes or quarters. when he emptied his pocket, kevin found that he had 2.05. how many dimes and quarters does he have?

Using radicals, write an equivalent expression to the expression y 1/5

Luigi is an urban planner. As an independent contractor, he charges a $140 fee plus $25 per hour for each contract with the city.

Deborah bought some bouquets of flowers. she wrote this equation to show the number of flowers in one bouquet. f = 6 deborah bought 4 bouquets of flowers. which equation represents the number of flowers she has altogether? a. 4 * f = 6 b.

What number A is 70% of 70

Makayla and Caroline go to the movie theater and purchase refreshments for their friends. Makayla spends a total of $49.00 on 9 bags of popcorn and 8 drinks. Caroline spends a total of $17.25 on 3 bags of popcorn and 3 drinks.

75.89+0.12=27.41+0.36

Which group of three side lengths will form a triangle? A11, 5, 4 B22, 17, 14 C28, 15, 10 D30, 15, 14

Enter the degree of the polynomial below. 5 х^5 + 8 х^2 + 2 х - 3x^9 - 8x^4 - 4 х^5 A. 9 B. 6 C. 8 D. 5

18/14in simplest form