What is the GCF of 2x2 + 4x + 8?

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?

If two angles are complementary, which is the sum of their measurements? a. 45o b. 90o c. 120o d. 180o

If the coefficient of determination for a data set containing 24 points is 0.5,12 of the data points must lie on the regression line for the data set. true or false?