Which expressions have a value of 15 when

S = 15

Simplify the numerical expression 5.75 - 1/2 (20:2.5) : 2+6

I^4 = - 1 true or false?

Solve x2 + 14x = - 24 by completing the square. What is the solution set of the equation?

Evaluate f=9/5c + 32 for c=20 degree

There are n gallons of oil. After m gallons have been used then, in terms of m and n, what percent of oil remains? What percent was used? Answer: percent of oil remains; percent was used. Also I need this TODAY

To get a 100 kilograms of a 48% fat content chocolate how many kilograms of a 30% and 50% mix should be used

For Exercises 51-60, use the following information: U = x is a natural number less than 20 A = x B = x (Note: The prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17, and 19.) Find the cardinality of each set. Answer 58. n (B′)

2 divided by 7 long division

If f (x) = 2x^2 - 4x and g (x) = 5 - 2x, evaluate f (x) - g (x) for x = 5

While shopping, lucinda spent $48. if the amount she spent was %15 of her savings, how much savings did she have before she shopped