If we put this into an equation it will make this easier. Lost four would stand for negative four or -4. Gained nine would plus or positive nine or 9. Put this together we get the following equation: 9-4
From there you can get the answer easily since that is like 1st grade math. The answer is that the total change is 5 yards.
There are 14 erasers in the jar all together, and 10 of them are not pink.
The probability of picking a not-pink one is
10/14 or 5/7 or 0.0.7143... or 71.43% .
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:
18.75
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
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