Simplify by combining Like Terms: 3x + 6 + 8x2 - 2x + 3x2

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

If chord ab is congruent to chord cd, then what must be true about ef and eg?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?