A jeweler wants to make 1600 grams of 25% silver compound by mixing 20% and 40% silver compounds together. How many grams of each kind will she need?

How do you solve 21r < 7?

The square root of 16

A grid of 100 squares shows 7 shaded squares what decimal number is represented

Let f (x) = x + 8 and g (x) = x2 - 6x - 7. Find f (g (2)). Select one: a. - 7 b. - 3 c. 10 d. 33

consider the equations y=3x+7 and 5x+2y=3. Solve the system equations by graphing. Give your solution to the system as a pair of cooridanites

Il padre di Robert è 4 volte più vecchio di Robert. Dopo 5 anni, il padre avrà tre volte più di Robert. Trova le loro età attuali.

Last Friday joe had $7. Over the weekend he received some money for a good report card. he now has $20. How much money did he receive.

Guys, I have a life question. So my BFF that i met in school (I had to switch schools) decided she was gonna quit a game that was our only communication. She said she is never gonna be on again and i'm sad because she NEVER responds to my texts.

Bill scores on his first four tests were 85, 90, 86 and 93. What will he have to score on his next test to obtain an average of atleast 90 for the term

Solve by elimination 4x+5y=15 6x-4y=11