Select all the correct answers. If the measure of angle is 0 is 7pi/ 4, which statements are true? The measure of the reference angle is 45°
cos) 0)= -√2/2
tan(0)=-1
The measure of the reference angle is 30°.
sin(0) =-√2/2
The measure of the reference angle is 60°.​

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212