The perimeter of a rectangle is 56 inches. the length is 4 more than 3 times the width. what are the dimensions of the rectangle?

write the system of equations that would be used to solve this problem.

Is the orthocenter of a triangle on the inside ?

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

Factor this polynomial completely x^2-64