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oksano4ka [1.4K]
3 years ago
7

The electric company took a survey of its customers and found that 91of 100 people said that they were pleased with their servic

e. The phone company has 8000 customers. What is a good prediction of the number of customers that are satisfied? A. 7580 customers B. 7280 customers C. 7080 customers D. 7208 customers
Mathematics
1 answer:
Svetach [21]3 years ago
5 0
Do this:
91/100 = x/8000 Then cross multiply to get
100x = 728,000 Then Divide on both sides by 100 to get
x = 7,280
The answer is B. 7,280
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Answer:

There are 3 adults in the family.

Step-by-step explanation:

The equations 8x + 4y = 32 and 16x + 12y = 72 represent the cost of lunch and dinner for a family in which x is the number of adults and y is the number of children.

We have to find the number of adults or the value of x by solving these equations.

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16x + 12y = 72 --------(2)

Now we will multiply equation 1 by 3 and subtract it by equation 2.

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Therefore, there are 3 adults in the family.

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Step-by-step explanation:

Please mark as brainliest. I'm happy to help

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