Which of the following statements is always true for all values of a

A) - a = a

B) |a| = - a

C) |a| = a

D) - (-a) = a

Does anyone know what is 1/2 of 1/4

Solve the literal equation for z. Cz + Mx = A

Subtract the following polynomials. (5x2+6) - (6x-5x2) im bad at math; -;

All of the following relations are functions, except A) y = x2. B) x = y2. C) y = |x|. D) y = x.

Joe and 33 of his classmates went bowling. Each mini bus holds 9 students if all the vans are full except one how many students are in the vwn is not full

What is the value of the expression? 1/6 + 1/6

Aubrey's dinner cost / $85$85. She tips the waitstaff 30/%30% for excellent service.

Tony had a certain number of stamps that were each worth $0.15. He misplaced 7 stamps. He found that the total value of his stamp collection was now $5.55.

The figure below shows a rope that circles the Earth. The radius of the Earth is 6371 kilometers. Assuming the rope makes a perfect circle, what is the length of this rope? Give your answer in terms of pi.

Thomas ran a mile in 8 minutes at this rate how many minutes did it take them to run 3/4 of a mile