Find tan theta if 90 < theta < 180, and csc theta = 5/4. a.-4/3
b.-3/5
c.4/5
d.3/4

Solve: 3x+y=6 4x-2y=18 show all work !

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.