If 8a-4b=20 and 4a-8b=4, then what is the value of a-b?

To make a ribbon and bow for a hat Stacey needs 5/6 yard of black ribbon and 2/3 yard of red ribbon. How much total ribbon dose she need

If there are always 2 red sections, how does the number of total sections in the spinner relate to the theoretical probability of winning this game? -Pearson EasyBridge 12-2: Ex 1: Use Theoretical Probability to Make Predictions & Try It!

the docter reccommended that matt decrease the number of calories he consumed from 3,400nto 1,900. by what percent did the number of calories decrease? round to the nearest tenth

Erica measures the mass of a steel ball several different times. If Erica's results are highly precise, this must mean that A. most of her results are very far from the actual measurement. B. most of her results are close to the actual measurement.

Jenna is driving 400 miles to visit her grandmother. She manages to travel the fist 100 miles of her trip in two hours. If she continues at this rate, how long will it take her to drive the remaining distance?

On a recent day, one U. S dollar was worth 0.64 euros. If you were to exchange 126 euros on that day, how many U. S. dollars would you have received? $64.00 $80.64 $126.00 $196.88

What is larger, 5/8 or 7/15's?

The water level in a tank can be modeled by the function h (t) = 8cos (pi t / 7) + 11.5, where t is the number of hours since the water level is at its maximum height, h.

The school is 2 kilometers away from the town library what is the distance in meters

Why is 3.125 repeating equal to 3 1/8?