Explain how adding three digit numbers is different than adding two digit numbers

I'm trying to solve radical equations and am confused Radical x - 2 = 2

Which statement describes the graph of f (x) = 4x7 + 40x6 + 100x5? a. The graph crosses the x axis at x = 0 and touches the x axis at x = 5. b. The graph touches the x axis at x = 0 and crosses the x axis at x = 5. c.

Find the Mean, Median, Mode, and Range: 1. 52, 46, 63, 40, 56 2. 40, 24, 7, 37, 43, 16, 24, 25

EZ car rental charges $40 dollars a day plus $0.25 per mile. Ace Rent-A-Car charges $25 dollars a day plus $0.45 per mile. What number of miles results in the same costs as one day?

What is the slant height of a square pyramid that has a surface area of 189 square feet and a side length of 7 feet? A. 14 ft B. 12 ft C. 10 ft D. 8 ft

What is x 3x + (2x-12) + 40-180

Scientific Notation: 3.78 * 10^3 * 2.9 * 10^2

Which expression is not equivalent to 11y-5 is it 88y-40 or 5y-11 or 19y-3 or 22y-10

A bag contains 5 green marbles, 6 blue marbles and 3 red marbles. What is the probability of randomly choosing a red marble from the bag?

Which is equivalent to - 2i (6-7i) ?