Which of the following equations is quadratic? A. x( x² + 1) = 0
B. 5(4x + 2) = 3
C. (x + 3)(x + 4) = 5

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Given that abcd is a rhombus, what is the value of x?

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11