Answer:
Step-by-step explanation:
3x - 1 = 3x -1 because it's reflecting itself
Answer:
(5x+3y) and (5x-3y)
Step-by-step explanation:
From the concept on difference between two squares;
a² - b² = (a+b)(a-b)
Therefore;
25x² - 9y² = (5x+3y) (5x-3y)
Therefore the dimensions of the square are (5x+3y) and (5x-3y)
So the equation would be 52/x (x being the number of total number of 7th graders) and 26/100 (100 being 26% out of 100%).
You do cross multiplying which would be 52/x = 26/100 ------ 5200 = 26x
You divided 26 by both sides.
5200/26=200
There are 200 7th graders total.
Step-by-step explanation:
marlena steps should look like this:
2x + 5 = -10 - x
(minus 5 from both sides)
2x = -15 - x
(add x to both sides)
3x = -15
(divide by 3)
x = -5
