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lara [203]
3 years ago
14

PLEASE EXPLAIN HOW U DID IT, giving brainliest

Mathematics
1 answer:
jeka943 years ago
3 0

9514 1404 393

Answer:

  (b)  30

Step-by-step explanation:

The standard form of a quadratic is ...

  y = ax^2 +bx +c

For such a function, the axis of symmetry is ...

  x = -b/(2a)

Your quadratic function has a=-5, b=+300, so the axis of symmetry is ...

  x = -300/(2(-5) = 30

The peak of the curve is on the axis of symmetry. So, profit is maximized when 30 items are produced.

_____

Of course, a graphing calculator can display the maximum of the function easily.

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Traveling at 65 miles/hour, how many feet can you travel in 22 minutes?
alexdok [17]
This is what's called a unit rate problem.

someone is going at 65 miles per hour, and you must find the distance in feet in 22 minutes. I think I know what chart you're talking about. I'm going to try to write it here, I don't know if it will appear the way I want it to

65 miles  |   1 hour    |    5280 feet |                                                                   -----------------------------------------------                                                                 hour        |    60 minutes|   Mile|              Now multiply the fraction out. Anytime a unit appears on both the top and bottom, it cancels, so miles and yours cancel. You end up with 343200 feet/ 60 minutes (all I did was multiply 65 by 5280 and add the remaining units and the denominator.                                                                                                                                                   The easiest way to get to your final answer is get the number of feet in one minute, so divide 343200 by 60 and you get 5720  feet/ min. To get the final answer, all you now have to do is multiply by 22 minutes to get 125840 feet.               
6 0
4 years ago
Read 2 more answers
What kind of transformation is illustrated in this figure
Nastasia [14]

Answer:

I think your answer is(C) rotation.

6 0
3 years ago
Number 46 please help
Sati [7]
2/3 = 8/12

5 1/4 = 21/4 = 63/12

63 divide by 8 is 7.875

7 batches should be your answer

hope this helps
3 0
3 years ago
Question 6 Essay Worth 5 points)
Blizzard [7]

Answer:

180-(40+50)=90

Step-by-step explanation:

y = 90 degrees

3 0
3 years ago
X² + 2x − 8 = 0<br><br> (x + _ ) (x - _ )<br><br> x = <br><br> x =
jeka94
Factors of -8 that add up to 2: 4 & -2

(x + 4)(x - 2)

Set x to 0 for both and solve

x = -4

x = 2
8 0
4 years ago
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