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Nuetrik [128]
3 years ago
12

Please help, show me how to check the answer to this

Mathematics
1 answer:
sveta [45]3 years ago
5 0
3x-7=5x=19
3x-7-5x=5x+19-5x
-2x-7=19
-2x-7+7=19+7
-2x=26
-2x/-2=26/-2
x=-13

:) Did you get that?
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Shiny White dental insurance costs $258 per year. Approximately one-third of insured people need a filling, which averages $110
sveta [45]

Answer:

  about $145.33

Step-by-step explanation:

Consider a group of 15 customers. They will pay ...

  15 × $258 = $3870

in premiums each year.

One-third of those, 5 customers, will submit claims for fillings, so will cost the insurance company ...

  5 × $110 = $550

And 80% of them, 12 customers, will submit claims for preventive check-ups, so will cost the company ...

  12 × $95 = $1140

The net income from these 15 customers will be ...

  $3870 -550 -1140 = $2180

Then the average income per customer is this value divided by the 15 customers in the group:

  $2180/15 = $145.33

_____

<em>Alternate solution</em>

Above, we chose a number of customers that made 1/3 of them and 4/5 of them be whole numbers. You can also work with one premium and the probability of a claim:

  258 - (1/3)·110 - 0.80·95 = 145.33

8 0
3 years ago
Read 2 more answers
Round the number shown to the underlined place value 7.657
ladessa [460]
The answer is A. 7.66 and B. which is also 7.66
8 0
3 years ago
Write (−13)⋅(−13)⋅(−13)⋅(−13)⋅(−13) using exponents. Fastttttttttttttttttttttttttttttttt
IRINA_888 [86]

Answer:

.l,´mfkf jh h

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Need help asap please
Dominik [7]
You’re answer is the very last choice, 3.15=315%.
you multiply the decimal by 100 to get 315%.
8 0
3 years ago
Whats the area of a square that is 9m and 9m?
siniylev [52]

Answer:

81 m².

Step-by-step explanation:

To find the area of a square, you will simply need to do the side-length squared, or A= l^{2}.

If the side-length is 9, we can do:

A = 9²

A = 81 m²

6 0
4 years ago
Read 2 more answers
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