Answer:
310 - 3w
310 - 3(80) = $70
Step-by-step explanation:
310 - 30w
w = 8
310 - 30(8)
310 - 240
= 70
Let L be the low copper alloy and H be the high copper alloy.
We need 0.15L + 0.60H = 0.42 and L + H = 100
L=100 - H
Substituting this into the second equation for L, we get:
0.15(100-H) + 0.60H = 0.42(H+L)
15 - 0.15H + 0.60H = 0.42(H+100-H)
15 + 0.45H = 0.42(100)
0.45H = 42 - 15 = 27
H = 27/.45 = 60 lbs
Back substitution, L = 40 lbs.
Answer:
B
Step-by-step explanation:
13/8 because when simplified into a decimal would be 1.625 and if you round would be 2 so you take out the decimal
Answer:
165.00 dollars
Step-by-step explanation:
Answer: 840. it won’t let me add my answer there has to be 20 letters so yea I’m just typing this but the answer 840.
