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Nina [5.8K]
3 years ago
5

Evaluate the expression. 621+5) - 3

Mathematics
1 answer:
Gennadij [26K]3 years ago
8 0

Answer:

I think its 623

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The cost c, to produce b baseball bats per day is modeled by the function c(b)=0.06b^2 - 7.2b + 390. What number of bats should
Finger [1]
You have two choices.
The minimum possible cost to operate your bat factory for a day is $390,
and there are two quantities of bats that both cost that much.

One possibility: 
                   Produce no bats at all per day.  Zero.  Nada.  None.
                   Cost = 0.06(0)²  -  7.2(0)  +  390  =  $390 per day.

The other choice:
                   Produce  120 bats per day.
                   Cost = 0.06(120²)  -  7.2(120)  +  390
                          = 0.06(14,400)  -  7.2(120)  +  390
                          =      864          -      864      +  390
                          =      $390  per day.

If you produce any other number of bats in a day ... more than zero
but not 120 ... then it will cost you more than $390 to operate the factory
that day.
8 0
3 years ago
Over the course of a weekend, the temperature drops 14.2 degrees on Friday, rises 13 degrees on Saturday, and drops another 10.8
Vladimir79 [104]
\bf \begin{array}{llrll}
friday&\downarrow &-14.20\\
saturday&\uparrow &+13.00\\
sunday&\downarrow &-10.80\\
&&\text{\textemdash\textemdash\textemdash}\\
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\end{array}
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A boy jogs 250 meters in 110 seconds. What is his average speed in m/s?
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His average speed is 2.27 meters per second
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(Need help ASAP!) Select the equation that most accurately depicts the word problem.
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I the answer is C I’m not really sure but I’ll update u when i get the answer
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Please help please i dont know how to do it I need to get my grades up asap
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Answer:

Well if you need help with graphing, there's a website named Desmos Graphing calculator. If you want to get your grades up, listen to some music then do the easy stuff. I dont know any websites from the top of my head :p

Step-by-step explanation:

6 0
2 years ago
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