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CaHeK987 [17]
3 years ago
13

Maddy's fourth grade class is going on 5 field trips. Each has a fee of $12.10. Sack lunches for each trip are an additional $2.

75. Round each amount to the nearest dollar to find an estimate for the cost of all 5 trips.
Mathematics
2 answers:
olya-2409 [2.1K]3 years ago
3 0

Answer:

12.10+2.75=

14.85x5=

74.25 or

75

Step-by-step explanation:

hope this helps

vladimir1956 [14]3 years ago
3 0
The answer to this question is 75
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Marat540 [252]

Answer:

<em>Maximum: (-1,9)</em>

Step-by-step explanation:

<u>Vertex form of the quadratic function</u>

If the graph of the quadratic function has a vertex at the point (h,k), then the function can be written as:

y=a(x-h)^2+k

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y =-2x^2-4x+7

To find the vertex, we need to complete squares. First, factor -2 on the first two terms:

y =-2(x^2+2x)+7

The expression in parentheses must be completed to represent the square of a binomial. Adding 1 and subtracting 1:

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Taking out the -1:

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Factoring the trinomial and operating:

y =-2(x+1)^2+9

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Vertex (-1,9)

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Since the leading coefficient is negative, the function has a maximum value at its vertex, i.e.

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Step-by-step explanation:

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