Solve the following system of equations using the elimination method 5x - y = 10 x + 3y = 4
1 answer:
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Answer:
A. (0,445)
D.(118,209)
E.(172,101)
Step-by-step explanation:
The equation that we have in this problem is:
where
d is the number of dimes
n is the number of nickels
$22.25 is the total amount of money collected by Diego in the jar.
In order to find which pairs of values can be solutions to the equation, we just need to substitute each pair (d,n) into the left term on the equation, and check if the result is 22.25. Let's do it:
A. (0,445)
--> YES
B. (0.50,435)
--> NO
C. (233,21)
--> NO
D.(118,209)
--> YES
E.(172,101)
--> YES
So the correct pairs are:
A. (0,445)
D.(118,209)
E.(172,101)
Answer:
33.3 pounds
Step-by-step explanation:
Alright, so if she made a 100 percent on the gloves, then she sold them for 8 dollars, because 4 + 1.00(4) = 8.
48 - 8 = 40
She sold the skirt for 40 dollars, and if that's at a 20 percent profit, then we can do a proportion
If we solve for x, we figure out that x = 33.33333 repeating.
So out answer to the nearest decimal place is 33.3 pounds