Answer:
x + y = 9
5x + 2y = 30
Step-by-step explanation:
We're trying to find the number of sandwiches and bottles of water he buys and we know he bought 9 in total. This can be represented by x + y = 9 (since x represents the sandwiches and y represents the water). Knowing this, we know that sandwiches (x) cost 5 dollars and water (y) costs 2 dollars. We know he spent a total of 30 dollars. The second equation can therefore be represented by 5x + 2y = 30.
Answer:
IF i slove can i get brainlet
Step-by-step explanation:
Answer:
i took a text on this its 1-
Step-by-step explanation:
hope that helps if im wrong im so sorry
The total number of coins is 9. Therefore
p+n+d = 9 (1)
There are two fewer nickels than dimes. Therefore
n = d - 2 (2)
From (1) and (2), obtain
p+(d-2)+d = 9
p + 2d = 11
p = 11 - 2d (3)
Total value:
0.01p + 0.05n + 0.10d = 0.53 (4)
Substitute (2) and (3) into (4).
0.01(11-2d) + 0.05(d-2) + 0.10d = 0.53
0.11 - 0.02d + 0.05d - 0.10 + 0.10d = 0.53
0.03d + 0.01 = 0.53
0.13d = 0.52
d = 4
p = 11 - 2d = 11 - 8 = 3
Answer: 3 pennies
54=.9x Solve for x. x=54/.9=60
