(6x² - x+1) - (-4+ 2x² + 8x) a. 8x² + 7x + 5
b. 8x² + 7x - 3
c. 4x² – 9x + 5
d. 4x² + 9x + 5

What is the geometric mean of 3 and 7? a) square root of 21 b) 2 square root of 6 c) 2 square root of 7 d) 21

Ineed ! what is the connection between ratios, fractions, and percents? give an example with your answer.

In chemistry, n molecules of an ideal gas have pressure, volume, and tempersture that stand inthe following relation, where r is constant. solve the equation for n, the number of molecules. pv=nrt