Which of the following is an equation?

x+y

2x - 7 = 13

3x + 5y > 9

3x + 5y - 9

Does 1/2 + 1/4 equal to 3/4

A certain atom has a diameter of 0.00000000032 meters. What is its diameter written in scientific notation?

Solve the equation 3y+4x=9 for y.

One-third of a number, decreased by six equals eight. What is the number?

F (x) = x2 - 8x + 15 g (x) = x - 3 h (x) = f (x) : g (x)

Which is the correct way to write $450.05 in words on a check? four hundred fifty dollars and five cents four hundred fifty and five hundredths dollars four hundred fifty and 05/100

Write 4.838 in exponential form

Is area and surface area the same? Why or Why Not?

1/2 m inches in feet

Which equation is true for x = 5? A) 2x + 5 = 25 Eliminate B) 3x + 5 = 17 C) 5x - 18 = 7 D) 6x - 10 = 26