Solve 8x+7y=5; 4x-9y=65

using matrices

Im soo bad at this stuff haha

Sarah uses a recipe to make 2 gallons of juice. Two of the containers she plans to use to store the juice have a capacity of one quart. The rest of the containers have capacity of one pint. How many pint containers will she need? key: 1 gal = 4 qt.

Find the smallest rectangular area of wrapping paper that can be used to wrap a preant that is 22 inches by 20 inches by 10 inches. The paper cannot be cut

What equation represents direct proportion

Evaluate 11 - 19 - 4 - (-8)

What is 56/42 in simplest form?

Is this trinomial factorable r^2-15r+56

The delivery truck for Hall's Department Store left the mall at 10:00 a. m. it was gone for 7 hours. when did it return

At the beach, 20% of people are on the boardwalk and 23% are on the sand. If the rest are in the water, what percentage of people are in the water?

What is the equation of slope=-8/5, y intercept = 4

Select the correct answer. Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation? A. 4.2E6 B. 4.2E-6 C. 42E6 D. 4.2E5 E. 4.2E-5