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iogann1982 [59]
3 years ago
10

A​ doctor's prescription calls for a daily intake containing 50 mg of vitamin C and 10 mg of vitamin D. Your pharmacy stocks two

compounds that can be​ used: one contains 80% vitamin C and 10% vitamin​ D, the other 40% vitamin C and 20% vitamin D. How many milligrams of each compound should be mixed to fill the​ prescription?
Mathematics
1 answer:
blagie [28]3 years ago
8 0
Setup
0.8x + 0.4y = 50
0.1x + 0.2y = 10 - Multiply by -2 and add

get
0.6x = 30
x = 50 mg compound A

.1 (50) + .2y = 10
5 + .2y = 10
.2y = 5
y = 25 mg compound B
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PLEASE HELP ASAP OFFERING 10 POINTS
klio [65]

Just did one just like it


688.32 = x + .043 x + .0325 x = 1.0755 x


x = 688.32/1.0755 = $640.00


Answer: $640.00


Check: 640(1+.043+.0325)= 688.32 good



6 0
3 years ago
Which equation represents the relationship between x and y in the table?
bija089 [108]

Answer:

Its a

Step-by-step explanation:

3*3 =9

4*4 =16

5*5 =36

5 0
3 years ago
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On which graph does the red point have a clear meaning?
Kobotan [32]

Answer:

The graph where the red point has a meaning is the graph C or third graph.

Step-by-step explanation:

As we can see the first and second graphs are irrelevant and have no relation between the x axis and y axis.

In graph A, the bird feeder graph is shown where the quart is a unit for liquids and pounds is a unit for solids. Thus, the red point cannot be defined.

Similarly, in graph B, height and team numbers are not related to each other in any way, so not clear meaning can be withdrawn here,

In graph C, the relation between cost of pictures and number of pictures are shown. We can very well understand here, that as the number of pictures increases, the cost increases.

So, the graph where the red point has a meaning is the graph C or third graph.

4 0
3 years ago
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5 times the sum of x and 6
Rina8888 [55]
You would start out with multiplying giving you 5(x+6). then you would have a product of 5x+30. hoped this helped!
7 0
3 years ago
Breanna works in the mall and her hours increase during busy shopping times of the year. Breanna has a plan to save $25 each wee
vesna_86 [32]
The math I used is probably not the quickest way, but for me, the easiest.
25*5=125  25+20=45  45*7=315  125+315=440  25*4=100  440+100=540  5+7+4=16
B is your answer.
5 0
3 years ago
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