Determine which equation below has a solution of a = 2.
a. 2a + 3a _ 6 = _21
b. 8 = 3 + 4a _ 3 _ 5a
c. _2 = 2 + 5a _ 2 _ 6a
d. _4a + 3a _ 6 = _4

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