franchely
20.08.2019 •
Mathematics
Hoverboards are approximately $300. noelle had a coupon for 15% off. what is the discount noelle will receive? give answer and show work
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Ответ:
"of" means multiply, and 15% is the same as 0.15 (% means divide by 100), so you have
0.15 * $300 = $45.
Ответ:
y + 2x - y = 18
Simplifying
y + 2x + -1y = 18
Reorder the terms:
2x + y + -1y = 18
Combine like terms: y + -1y = 0
2x + 0 = 18
2x = 18
Solving
2x = 18
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '2'.
x = 9
Simplifying
x = 9