What is the scientific notation for 21

Analyze Relationships Elisa withdrew $20 at a time from her bank account and withdrew a total of $140. Francis withdrew $45 at a time from his bank account and withdrew a total of $270. Who made the greater number of withdrawals? Justify your answer.

A recipe for guacamole uses 12% lime juice, if a batch contains 0.75 cup of lime juice, how large is the batch of guacamole?

2x^2 + 15x - 108 = 0

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

What is the area of a rectangle with length 112 foot and width 34 foot?

The Ferrels save $150 each month for their next summer vacation. Write an equation that they can use to find s, their savings, after m months.

The sum of three consecutive integers is - 255. what are they?

How many two third ounce can be made with 8ounces

Written as a simplified polynomial in standard form, what is the result when (3x + 1) 2 is subtracted from 8?

Every two days he's trying to spend 1.75 hours observing dolphins and 2.5 hours observing sea lines at this rate how many total hours will the scientist spend a observing dolphins and sea lions in 10 days