Ax + by = a2 + b2 and x + y = a+b solve x and y

Ivan made 6 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for all 6 necklaces was$31.40. If the beads cost a total of $15.60, how much did each pendant cost?

I i dont really understand it!

Ann needs 42 feet of fabric to make a small quilt. How many yards of fabric should she buy? A. 13 yards B. 14 yards C. 21 yards D. 126 yards

Torri had $20 to buy a birthday present for her dad. She decided to buy a DVD for $18. The sales tax is 7%. Does she have enough money? Explain your reasoning

Solve triangle ABC given that A=56 B=57 b=9 a) C=64, a=10.2, c=9.8 b) C=67, a=10.2, c=9.88 c) C=67, a=8.9, c=9.88 d) C=66, a=8.7, c=9.88

Use complete sentences to describe the sum of CA and AB

Select the expressions that are equivalent to 18m - 12. A. 6m - 4 + 6m - 4 + 6m - 4 B. 12m + 6 - 6m - 6 C. 6 (3m - 2) D. 3 (6m - 4) E. 24n - 4² + 8 - 6m

For every person who actually has the flu there are 6 people who have the flu resulting in a cold. If a doctor sees 49 patients write and solve a proportion to determine how many of these you would expect to have a cold

Which statement is the Law of Detachment? A. If p q is a true statement and q is true, then p is true. B. If p q is a true statement and q is true, then q p is true. C. If p q and q r are true, the p r is a true statement. D.

Eve has 24 stamps each valued at $24.75. what is the total value of her stamps?