What is 9x+7y=-18 using substitution

If 0 is an acute angle and sin 0 = 1/2 then cos 0 =

Rachit borrowed 15000 from his friend. He gave 3000 at the rate of 15% per annum and the remaining amount at the rate of 18% per annum. How much interest did he pay in 4 years

A forest preserve had 275,301 pine trees. Rangers planted 21,748 new trees. How many trees does the forest preserve have now?

A square contains 23 blue, 12 red and 17 yellow beans. If I choose one bean from the box at random, what's the probability of it being blue?

A formual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

What does proportional mean?

Probability is the a. numerical measure of the likelihood that an event will occur. b. chance that an event will not happen. c. number of successes divided by the standard deviation of the distribution. d.

The diagonal of a rectangle is 100 units. The width is 80 units. What is the area of the rectangle in square units.

Is 9m=9m the answer for 3 (m-3) = 3m-9? if not what is the answer?

During bully's first week working in China shop he breaks a vase that cost $45.89 two glasses that cost $16.25 each and a platter that cost $135.49 if he makes $5.25 an hour how many hours will we have to work to pay for the things he broke