If you add Natalie's age and Fred's age, the result is 37. If you add Fred's age to 4 times Natalie's age, the result is 76. Write and solve a system of equations to find how old Fred and Natalie are.

Simplify the expression. -2/5(10+15m-20n)

(01.04 lc)multiply 1 over 6 multiplied by negative 1 over 2. negative 1 over 3 negative 1 over 12 1 over 12 1 over 3

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.