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-Dominant- [34]
3 years ago
12

Carli and Angela share a cell phone plan and split the bill each month. Last month, their total bill was $109. Carli went over h

er data limit on her phone, so her share of the bill was $15 more than Angela's to account for the overage charge. Which system of equations represents this situation?
Mathematics
2 answers:
Vikentia [17]3 years ago
8 0
For this case, the first thing we must do is define variables.
 We have then:
 x = Carli's bill
 y = Angela's bill
 We have then:
 "their total bill was $ 109"
 x + y = 109
 "Carli went over her data limit on her phone, so her share of the bill was $ 15 more than Angela's"
 x = y + 15
 Answer:
 
A system of equations that represents this situation is:
 
x + y = 109
 
x = y + 15
Taya2010 [7]3 years ago
8 0

Answer:

c+a=109

c=a+15

Step-by-step explanation:

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zlopas [31]

Answer:

c = 0.165

Step-by-step explanation:

Given:

f(x, y) = cx y(1 + y) for 0 ≤ x ≤ 3 and 0 ≤ y ≤ 3,

f(x, y) = 0 otherwise.

Required:

The value of c

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\int\limits^a_b \int\limits^a_b {f(x,y)} \, dy \, dx  = 1

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\int\limits^3_0 \int\limits^3_0 {cxy(1+y)} \, dy \, dx  = 1

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c\int\limits^3_0 \int\limits^3_0 {xy(1+y)} \, dy \, dx  = 1

Open the bracket

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Add fraction

c\int\limits^3_0 {(\frac{27x + 54x}{6})  \, dx = 1

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Rewrite;

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The \frac{1}{6} is a constant, so it can be removed from the integral sign to give

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Multiply both sides by \frac{12}{729}

c    =  \frac{12}{729}

c    =  0.0165 (Approximately)

8 0
3 years ago
What do i do please help!
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Answer:

Step-by-step explanation:

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maybe you can solve that?   I'll solve it below.. but.. if you can.. try it now, on your own

below is my answer... don't look until you have solved yours :P

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you may be able to see that it will take 1/3 of an hour to travel 50 km

so 60 minutes times 1/3 = 20 minutes  :)

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