How do you add, subtract, multiply, and divide numbers written in scientific notation?

Estimate the product by rounding 9*54

Find the x - and y - intercepts for 12y - 3x = - 9

Find the number of possible choices for a 4-digit (pin) if the digits cannot be repeated find the possible choices of a 4-digit (pin) if the digits cannot be repeated

Write 60 as the product of two numbers

Mary earned $200 for doing some jobs for neighbors. She spent $31.66 at the mall and $48.18 at the convenience store. She put the rest of the money in her savings account. About how much money did Mary put in her savings account? A.

Write a ratio for the following description: Kaleel made three times as many baskets as john during basketball practice.

If you were on the moon, your weight would only be 0.17 of your weight on Earth. If you weigh 195.75 pounds on Earth, how much would you weigh on the moon?

Find the center, vertices, and foci of the ellipse with equation x^2/100+y^2/64 = 1.

The first person has $15 and saves $1.50 each day. The second person has $55 and spends $4.50 each day. In about how many days will they have the same amount of money? a 7 days b 15 days c 21 days d 12 days

Ten students participated in a raffle to win a computer. There are two new computers being given away and two students will be chosen at random one at a time without replacement. How many possible ways are there to choose the two students?