Which shows the expression below in simplified form?

(6.4 * 10-1) - (2.3 * 10-4)

grandpa spent 2 1/4 hours working woth his horse. he spent 2/3 of that time riding his horse. how many hours did he spend riding his horse?

How to write expression for (5x2) x (3x15)

What are the zeros of the polynomial function y = (x-7) (x-5) (x-3)

samuel earns 3$ an hour less than jack. in 6 hours samuel earns 72$. which equation can be used to find x, the amount, in dollars, jack earns in an hour

Julie has 15 nails. She uses 8 to build a birdhouse. She subtracts to find the number of nails left. Which addition sentence can she use to check her work?

Lisa and valerie are picnicking in Trough Creek State Park in Pennsylvania. Lisa has brought a salad that she has made with 3/4 cup of strawberries, 7/8 cup of peaches, and 1/6 cup of blueberries. They ate 11/12 cup of salad.

there are four colors red white black and blue on a spinner and there is a coin. what is the probability of spinning a red and heads?

Sodium-24 has a half-life of 15 hours. How many grams of a 900 g sample will remain after 90 hours? A) 7.03125 g B) 7.5 g C) 14.0625 g D) 28.125 g

Find the area of a parallelogram with the base 15 yards in the height 21 2/3 yards

Write the improper fraction 280/3 as a mixed number