The perimeter of a rectangle is equal to 10. If the length is halved and the width is doubled, the new perimeter is increased by 4. What is the length of the original rectangle?

For a normal distribution, what z-score value separtes the lowest 20% of the distribution from the highest 80%?

Whats equivalent to 18/4?

Amber earned $14.50 babysitting on Saturday. On Sunday, she spent $6.95 when she purchased a movie ticket. She needed to borrow money from a friend to complete her purchase of a snack.

What is 3divided by 1000 divided by5

What value of x makes this equation true? 1.2x+5=0.9+10

Find x when y=3 in the literal equation 3x+6y=24

The sequence below is arithmetic {1,8,27,64}

Angles α and b are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of b if b < α. sin (x 2 + 2x) = cos (2x + 3x 2)

Kevin has mowed 40% of the lawn. If he has been mowing for 20 minutes, how long will it take him to mow in a hour?

How to solve - x^2-2x=5?