The distance formula is derived from the Pythagorean Theorem because the length of one leg of the triangle will always be the difference of the x<span>-coordinates, and the length of the other leg will always be the difference in the </span>y<span>-coordinates</span>
Answer: Similarly, when we describe an expression in words that includes a variable, we're describing an algebraic expression (an expression with a variable). One of the many reasons is that math is more precise and easier to work with than words are.
Step-by-step explanation:
True bc a decimal is the same as a fraction
Answer:she had 11 video games on Monday.
Step-by-step explanation:
Let x represent the number of video games that Susie had initially.
On Tuesday, Susie buys three new video games from the store. This means that the total number of video games that Susie had would be x + 3
On Wednesday, she sells half of her video games in order to make extra money. This means that the number of video games that she sold is
(x + 3)/2. The number of video games left would be
x - (x + 3)/2
If she has 4 video games left after selling, it means that
x - (x + 3)/2 = 4
2x - (x + 3) = 8
2x - x - 3 = 8
x - 3 = 8
x = 8 + 3 = 11
