A. 100 < 50 False
B. - 50 > 100 False
C. 100 > 50 True
D. 50 < - 100 False
Step-by-step explanation:
3(x - 4y) - 2(y + 7x)
= 3x - 12y - 2y - 14x
= 3x -14x -12y -2y
= -11x -14y
9514 1404 393
Answer:
18.98 pounds
Step-by-step explanation:
Let 'e' represent the number of pounds of expensive candy Ellen should use. Then 27-e is the number of pounds of less expensive candy. Her total cost is ...
1.45(27 -e) +3.74e = 27(3.06)
(3.74 -1.45)e = 27(3.06 -1.45) . . . . subtract 1.45(27)
e = 27(3.06 -1.45)/(3.74 -1.45) = 27(1.61/2.29) ≈ 18.98
Ellen should use about 18.98 pounds of the expensive candy.
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<em>Additional comment</em>
We showed the solution this way because it is the generic solution to any mix problem. The fraction of the mix that is the highest-value contributor is the ratio of the difference between the mix value and the lowest contributor to the difference between contributors. Here, that fraction is ...
(3.06 -1.45)/(3.74 -1.45) = (1.61/2.29)
I'm pretty sure it's 3 1/4 because if you add 2 1/2 and 1 1/6 it'll be 3 2/8 then if you reduce it it'll be 3 1/4
Answer:
8 posts.
Step-by-step explanation:
There are 7 lengths of 7 feet in 49 feet.
That is 7 posts but there is a post at each end so the number required = 7 + 1 = 8 posts.
