7 + 2/5 x = 1 solve this fast

The equation d=1/2n (n-3) gives the number of diagonals D for polygon with n sides. use this equation to find the number of sides n for a polygon that has 65 diagonals

Write 7*7*b*b*b in exponential form

How do you do 11/12 in simplest form

How many significant figures does 2,090 have

What is the simplest form of this expression? - x^3 (5x+1) + 4x^4

How do I graph y=6/5x+1

Pasha is thinking of a number such that when twice the number is added to three times one more than the number she gets the same result as when she multiplies four times one less than the number. what number is pasha thinking about?

Solve the equation. -10x + 1 + 7x = 37 Ox = - 15 Ox = - 12 Ox = 12 Ox = 15

Eight people are entered in a race. If there are no ties, in how many ways can the first three places come out?

An item costs $410 before tax, and the sales tax is $28.70. whats the sales rate