How do u know how many spaces to move your decimal when writing a number in scientific notation

Andy is one fourth as old as his granfather who is 76 years old. write an equation to determine whether Andy is 19 or 22

Recall that the slope of a non-vertical line is a measure of the number of units the line rises (or falls) vertically for each unit of horizontal change from left to right.

Three-fifths (3/5) of a foot of rain was collected in two-thirds (2/3) of a day. At that rate, how much rain would be collected in one day?

Write digit (s) can be in the ones place of a number that has 5 as a factor

M+3m-6m+8 Simplify expression by combining like terms

4x-6y=2 3x+5y=11 Jonas used the linear combination method to solve the equation shown. He multiplied the first equation by 3, and the second equation by another number to eliminate the x terms. What number did Jonas multiply the second equation by?

Larry purchase 8000 shares of a stock at a price of $7.29 a share. He sold the stock six years later at the price of $10.31 per share. What is this percent gap gain

What is the value of the expression - 7 - 5 + 4? A. -16 B. -8 C. -12 D. -6

What two numbers add up to - 3 and multiply to - 100?

Find the least common denominator of each fraction, show all of your work: 1/3 and 3/4