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GaryK [48]
2 years ago
15

In the picture is de question

Mathematics
1 answer:
valentina_108 [34]2 years ago
8 0
2+(x+4)= ?
So it really is: 2+1(x+4)=0
You distribute the 1 to the x+4
2+ 1x +4= 0
Combine like terms
1x+ 6=0
Subtract six on both sides
1x=-6
Divide by 1 on both sides
x=-6
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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 number n plus 8 is greater than 11? What is the inequality and the solution?
fomenos

Answer:

n+8 > 11

subtract 8 from 11

n>3

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Write an equation in slope-intercept form for the line with slope<br> -1/4<br> and y-intercept 4.
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Answer:

4

Step-by-step explanation:

The equation of the line is written in the slope-intercept form, which is: y = mx + b, where m represents the slope and b represents the y-intercept. In our equation, y = − 7 x + 4 , we see that the y-intercept of the line is 4.

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Yes thats a function, it passes the vertical line test!
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