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hodyreva [135]
3 years ago
15

Pre cal help please

Mathematics
1 answer:
ss7ja [257]3 years ago
7 0

We have the following function

f(x)=\frac{3}{x+2}-\sqrt{x-3}

We want to know what is the value of f(x) when x is 19

f(19)=\frac{3}{19+2}-\sqrt{19-3}=1/7-4=\boxed{-27/7}

If you have additional questions feel free to ask.

Hope this helps.

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3) The line that models the data in the scatter plot below is given by the
rusak2 [61]

Using the given linear function, it is found that the slope is of 73, which means that for each traffic ticket, the cost of car insurance increases by $73.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0.

In this problem:

  • x represents the number of traffic tickets.
  • y represents the cost of car insurance.

The function is:

y = 73x + 146.53

Hence the slope is of 73, which means that for each traffic ticket, the cost of car insurance increases by $73.

You can learn more about linear functions at brainly.com/question/25823744

4 0
2 years ago
A book has been discounted by 30%. It is on sale for $22.40. Find the original price.
Harrizon [31]
ANSWER: $29.12 is the original price

EXPLANATION:
Do 22.40 • 0.30 to get 6.72
Then take 6.72 and add it to 22.40
This gives you the original price, $29.12


8 0
3 years ago
use four rectangles to estimate the area between the graph of the function and the x-axis on the interval using the right endpoi
WINSTONCH [101]

we have the function

f(x)=6/(7x)

the interval [2,6]

Divide into fur rectangles

the width of each rectangle is equal to

(6-2)/4=1

the intervals are

(2,3) (3,4) (4,5) and (5,6)

using the right endpoints

the approximate area is equal to

A1=f(3)*(1)=[6/(7*3)]*(1)=6/21

A2=f(4)*(1)=[6/(7*4)]*(1)=6/28

A3=f(5)*(1)=[6/(7*5)]*(1)=6/35

A4=f(6)*(1)=[6/(7*6)]*(1)=6/42

therefore

the approximate area is

A=(6/21)+((6/28)+(6/35)+(6/42)

simplify

A=(6/7)*[(1/3)+(1/4)+(1/5)+(1/6)]

A=(6/7)*[(20+15+12+10)/60]

A=(6/7)*[57/60]

<h2>A=57/70 unit2 -----> exact answer</h2>
4 0
1 year ago
How do you write a fraction that is a miked number of 13/6
Cloud [144]
Divide 13 and 6. you should get 2 remainder 1. don't put remainder. put 2 1/6 because it goes into there 2 times with 1 remainder out of 6.
8 0
4 years ago
Read 2 more answers
What does x = help please
Allisa [31]

Answer:

x= 90/4*2x

Step-by-step explanation:

4 0
3 years ago
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