Which equation is an identity?

3 (x - 1) = x + 2 (x + 1) + 1

x - 4 (x + 1) = - 3 (x + 1) + 1

2x + 3 = 1/2 (4x + 2) + 2

1/3 (6x - 3) = 3 (x + 1) - x - 2

Is 0.121221222 ... rational or irrational?

Joan buys cans of beans in bulk. She buys 3 cases of beans for a total of $23.15. Each case contains 6 cans of beans.

Prove the following trigonometric identity 2/square root of 3 cosx + sinx = sec (pi/6 - x)

Marcus is 1.5 meters tall. His sister is 0.1 meter taller than Marcus. Their father is 0.2 meter taller than his sister. How tall is their father?

Simplify 5 + 5i / 2-i?

Use the traditional algorithm. What is (+16) divided (+2?

What is 0.0000000734 estimated as the product of a single digit and a power of 10?

Which is the quotient of 3.12:6.5 a 0.0 48B 0.48C 4.8 D 48

If a integer greater than four is raised to one half power, we are finding ... -the cube root of the number -the square root of the number -the opposite of the number -the number divided by two

4 5/8 + 2/3 whats is the answer