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Mathematics : asked on charleneubah3902
 03.11.2022

Given the tunction f(x)= - x^2 + 4x - 3 ,find the rate of chango over the interval [-2,7] (you can take the negative leading coefficlent off for reg ed if you want) *

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09.07.2023, solved by verified expert
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Nitin Arora
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Mathematics, English, Physics. Research Scholar at Indian Institute of Technology, Roorkee
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Step-by-step explanation:

Given function:  Given the tunction f(x)= - x^2 + 4x - 3 ,find, №18011047, 03.11.2022 15:01

Given the tunction f(x)= - x^2 + 4x - 3 ,find, №18011047, 03.11.2022 15:01

Given the tunction f(x)= - x^2 + 4x - 3 ,find, №18011047, 03.11.2022 15:01

Given the tunction f(x)= - x^2 + 4x - 3 ,find, №18011047, 03.11.2022 15:01

Therefore, average rate of change over the interval -2 ≤ x ≤ 7

Given the tunction f(x)= - x^2 + 4x - 3 ,find, №18011047, 03.11.2022 15:01

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Mathematics
Given the tunction f(x)= - x^2 + 4x - 3 ,find the rate of chango over the interval [-2,7] (you can take the negative leading coefficlent off for reg ed if you want) *
Step-by-step answer
P Answered by Specialist

-1

Step-by-step explanation:

Given function:  f(x)=-x^2+4x-3

\implies f(-2)=-(-2)^2+4(-2)-3=-15

\implies f(7)=-(7)^2+4(7)-3=-24

\textsf{Average rate of change}=\dfrac{f(b)-f(a)}{b-a}\quad\textsf{for}\:a\leq x\leq b

Therefore, average rate of change over the interval -2 ≤ x ≤ 7

\implies \textsf{Average rate of change}=\dfrac{f(7)-f(-2)}{7-(-2)}=\dfrac{-24-(-15)}{9}=-1

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You can buy jars of the same jam in 2 sizes large jar:440g for £1.54 small jar:340g for £1.26 By considering the price per gram, work out which jar is the best value for money. Working must be shown
Step-by-step answer
P Answered by PhD
Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram
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Step-by-step answer
P Answered by PhD

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5

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The answer is in the image 

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Step-by-step answer
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For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Answer is B)8:7

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The solution is in the following image

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The answer is in the image 

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Step-by-step answer
P Answered by PhD

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

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Step-by-step answer
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The answer is in the image 

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Step-by-step answer
P Answered by PhD

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