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Phantasy [73]
3 years ago
11

If b is inversely proportional to c, and b is 5 when c is 12, find b when c = 20

Mathematics
1 answer:
anzhelika [568]3 years ago
6 0

4b = 12 . b = 3
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I need help with number 10
lukranit [14]
A)
Knights:
25n-C+1250=0
25n+1250=C
C=25n+1250

Legions:
30n+995-C=0
30n+995=C
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b)
fixed cost=b in y-intercept form
variable cost, dependent on n=m in y-intercept form
Knights:
fixed=1250
variable=25

Legions:
fixed=995
variable=30

c)
insert 45 into n for both formulas:

Knights:
25*45+1250=1125+1250=2375

Legions:
30*45+995=1350+995=2345

d)With 45 guests the Legion's Banquett Hall is cheaper, but due to the higher variable cost this changes with a few more people.
calculate break even point:
difference in variable cost=5 -> per person the cost difference will decrease by this much if another person joins
current price difference: 2375-2345=30
30/5=6 -> if there are 6 additional guest (total= 51) they will cost the same
if there are more than 6 additional guest (total >51) the knight's banquett will be cheaper.


6 0
3 years ago
Given 2x² = -8, x is<br>a. -2<br>b. 2<br>c. 2i or -2i<br>d. 4i or -4i
marishachu [46]
Your answer is (a) because 4 times 2 is 8 but since it's negative 2 it's negative 8

5 0
3 years ago
Help! <br> Expressions and equations
Dovator [93]

Answer:

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5 0
3 years ago
1
Yuri [45]
The answer to your question is c
5 0
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stepan [7]

Answer:

2 yards.

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5 0
3 years ago
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