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Ilia_Sergeevich [38]
3 years ago
6

Help me solve this problem please

Mathematics
1 answer:
Simora [160]3 years ago
8 0

Answer:

6

Step-by-step explanation:

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the equation y= - 5.131x2+ 31.821x - 3.333 approximates the number of people standing in line to catch a commuter train x hours
ehidna [41]

We are given function: y= - 5.131x^2+ 31.821x - 3.333

Where, x is the number of hours after 5a.m.

We need to approximates the number of people standing in line to catch a commuter train at 7 a.m.

From 5 a.m. to 7 a.m. total number of hours = 7-5 = 2 hours.

So, we need to plug x=2 in the given function.

Plugging x=2 in y=- 5.131x^2+ 31.821x - 3.333, we get

y=- 5.131(2)^2+ 31.821(2) - 3.333

Let us simplify it now.

2^2= 4.

Therefore,

y=- 5.131(4)+ 31.821(2) - 3.333

= -20.524 + 63.642 - 3.333.

= 39.785 or 40 approximately.

Therefore, the number of people in line at 7 a.m. is approximately 40 people.

Option D.40 is correct option.

3 0
3 years ago
A certain math textbook is 3/4 of an inch thick. how many of these books will fit on a shelf that is 3 feet wide
Advocard [28]
48 books will fit on this shelf.
6 0
3 years ago
Can someone see if i did this correct? If not pls explain
Taya2010 [7]

Answer:

Not right.

Step-by-step explanation:

m <HGJ + m <KGJ =180°

So, m <HGJ = 180° - m <KGJ = 180° - 86° =94°

8 0
2 years ago
The sum of 7 angles of a decagon is 1170°. The 3 sides are equal to each other. Calculate the size of the other 3 angles.​
7nadin3 [17]

Answer:

180.....1888888888888888

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Which statement is TRUE?
Anastaziya [24]

Answer:

the answer is C i think

Step-by-step explanation:

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