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marysya [2.9K]
3 years ago
9

HELP ME PLEASE I NEED ANSWERS REALLY FAST I'LL GIVE BRAINLIEST TO THE CORRECT ANSWER SO PLEASE HELP ME!!!!

Mathematics
2 answers:
nadezda [96]3 years ago
5 0

Answer:

1 answer is 1

2 answer is 2

3 answer is 3

4 answer is 4

5 answer is 5

inessss [21]3 years ago
4 0

Correct answers in reasoning and statements together.

Please give brainliest thank you so much!!

Hope this helps!!

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An aircraft factory manufactures airplane engines. The unit cost (the cost in dollars to make each airplane engine) depends on t
Juliette [100K]

Answer:

Minimum unit cost = 5,858

Step-by-step explanation:

Given the function : C(x)=x^2−520x+73458

To find the minimum unit cost :

Take the derivative of C(x) with respect to x

dC/dx = 2x - 520

Set = 0

2x - 520

2x = 520

x = 260

To minimize unit cost, 260 engines must be produced

Hence, minimum unit cost will be :

C(x)=x^2−520x+73458

Put x = 260

C(260) = 260^2−520(260) + 73458

= 5,858

7 0
3 years ago
Isabella is travelling in Brazil during the summer, She knows that a 15-minute phone call home to her family costs $45.85 and a
choli [55]
19 minutes ..
Divides 45.85 by 15 you will get 3 same for the other cost- the divide 3 by 55.81 and you get 19
7 0
3 years ago
A painter has finished painting 45% of a really long fence. If she has painted 90 feet so far, how long is the entire fence?
frozen [14]

Answer:

90/45%=200

the entire fence is 200

6 0
3 years ago
What is 15 - (-15) need answer asap
Stels [109]

Answer:

30

Step-by-step explanation:

(-) (-) = +

Therefore 15 - (-15) = 15 + 15 = 30

4 0
3 years ago
Plz complete the table.
Tresset [83]

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32

Step-by-step explanation:

divide 1320 by 8 to see how many feet per minute and then divide that number by 5,280 ft to see your final  answer.  

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