Add the decimal

98.5+23.5

454.12kg; 3 significant digits

Find f (20) for f (n) = - 2n + 6

What could be the first step in solving the equation 13x^2+9=45? A. Multiply both sides of the equation by 13. B. Take the square root of both sides of the equation. C. Add 9 to both sides of the equation. D.

6 less than the quotient of z divided by 3

Starting at sea level, a submarine descended at a constant rate to a depth of - 4/5 mile relative to sea level in 3 minutes.

There are twelve shirts in your closet: five blue, four green, and three red. You randomly select one to wear. What is the probability it is blue or green?

You have 6 different video games. How many different ways can you arrange the games side by side on a shelf?

What is the least common multiple of 17 and 9?

One T-shirt is sold for every 5 people who attend a concert. What is the ratio of people to T-shirts sold? The ratio of people to T-shirts sold is to .

Which of the following is an example of a proper fraction? A. Al B. C. 3/4 D. 414