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slamgirl [31]
1 year ago
12

(c) Given that the average speed for the entire journey was 80 km/h, form an equation in x and solve the equation.​

Mathematics
1 answer:
Oduvanchick [21]1 year ago
4 0

Answer:

80x = y

Step-by-step explanation:

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Let e f (x) = x2 – 2x - 4 What is the average rate of change for the quadratic function from X = -1 tox to x = 42 Enter your ans
sammy [17]

Answer:

The average rate of change of the given function

A(x) =  1

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given function f(x) = x² - 2x -4

And given that x = a = -1 and  x=b = 4

The average rate of change of the given function

A(x) = \frac{f(b)-f(a)}{b-a}

<u><em>Step(ii):-</em></u>

f(x) = x² - 2x -4

f(-1) = (-1)² - 2(-1) -4 = 1+2-4 = -1

f(4) = 4² -2(4) -4 = 16 -12 = 4

The average rate of change of the given function

A(x) = \frac{f(b)-f(a)}{b-a}

A(x) = \frac{4-(-1)}{4-(-1)} = \frac{5}{5} = 1

<u><em>final answer:-</em></u>

The average rate of change of the given function

A(x) =  1

5 0
3 years ago
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Root of 3 time the root of <br> 5
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Answer:

root of 15 or in decimal form 3.87 (rounded)

Step-by-step explanation:

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Answer:

[(1/12)(5/5) + (1/20)(3/3)](x hours) = 1

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x = 7 1/2 or 7.5 hours

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