Solve the system using substitution
1. x+y=8
y=3x
a (4,12)
b (2,6)
c (1 over 2, 3 over 2)
d (-4,-12)

Math each whole number with a rational,exponential expression

How can (square root of 25) ^2 be rewritten?

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7