2 years ago

I’ll give brainlest if you help me please anyone!!!

Mathematics

2 answers:

madam [21]2 years ago

8 0

Answer:

Step-by-step explanation:

JulijaS [17]2 years ago

3 0

Answer:

b=4.5

Step-by-step explanation:

i bet u chould have done that

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Which of the following functions best represents the graph?

Leviafan [203]

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3 years ago

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What is 0.019 written as a percent? A. 0.00019% B. 0.019% C. 0.19% D. 1.9%

Lesechka [4]

The correct option is d

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3 years ago

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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.

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