Find the geometric mean of 5 and 320

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Which of the following can be used to explain a statement in a geometric proof?

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?