25. A volume of 1 cubic foot contains about 7 1/2 gallons. How many cubic feet of oil will a cooling tank hold if it contains 1.776 1/2gallons?

If possible could you guys help with 21 and 23 too thanks

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is: