Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
math question and solution please?
A kid has collected 150 nickels and dimes. She has 70 more nickels than dimes. How many of each does the kid have? Show how answer is reached please.
4 Answers
- 1 decade agoFavorite Answer
If N is nickels, and D is dimes:
N + D = 150
N = D + 70
Substituing:
(D + 70) + D = 150
2D = 80
D = 40
N = 110
- ?Lv 71 decade ago
n + d = 150
n = d + 70
(d + 70) + d = 2d + 70 = 150
2d = 80
d = 40
40 dimes and 110 nickels
- ?Lv 71 decade ago
150 nickels and dimes
N+D=150
70 more nickels than dimes
N=D+70
substitute for N
(D+70)+D=150
2D+70=150
2D=80
D=40
She has 40 dimes and 110 nickels
- Anonymous5 years ago
A solution would mean the two lines intersect. Since, they are boths set equal to x, you can set the two equations equal and solve for y 2y+6=3y+10, so 6=y+10, or y=-4. Plug this into the first equation to get: 2(-4)+6=-2. Hence, they intersect at (-2,-4)
