3 years ago

Given the function g(x) = –x^2+ 4x + 9, determine the average rate of change of

Mathematics

1 answer:

Ghella [55]3 years ago

4 0

Answer:

Step-by-step explanation:

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An express train makes a run of 240 km at a certain speed. Another train whose speed is 12 km/hr less takes an hour longer to co

Evgesh-ka [11]

Answer:

12.63 km/hr

Step-by-step explanation:

Given the distance=240km

At 12 km/hr it will take =240/12 =20

time for Express train = 20-1=19

speed=240/19=12.63...km/hr

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3 years ago

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Slope of (6,1) and (-4, -4)

Nady [450]

-1/15, use the slope formula

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If A=p+prt, than t equalls?

ella [17]

Answer:

$\boxed{t=\frac{A-p}{pr}}$

Step-by-step explanation:

$A=p+prt$

Subtract p on both sides.

$A-p=p+prt-p$

$A-p=prt$

Divide both sides by pr.

$\displaystyle \frac{A-p}{pr} =\frac{prt}{pr}$

$\displaystyle{\frac{A-p}{pr} =t}$

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3 years ago

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Will give brainliest if correct

goldfiish [28.3K]

Answer:

15) Slope (m) = -7/5

16) Slope (m) = 0

17) Slope (m) = 1/0 (It's an undefined slope, in other words it's just a vertical line)

Step-by-step explanation:

Use this formula for each, to find slope⤵⤵⤵

$\frac{y {2} - y1}{x2 - x1}$

15) ⤵

$\frac{10 - 3}{ - 1 - 4} = \frac{7}{ - 5} = - \frac{7}{5}$

16) ⤵

$\frac{ - 5 - ( - 5)} {2 - 3} = \frac{0}{ - 1} = 0$

17) ⤵

$\frac{ 3 - 2}{ - 5 - ( - 5)} = \frac{1}{0}$

Hope this helps :)

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2 years ago

The expression (3x^2)^4/9x^3 is equivalent to which other expression

maksim [4K]

$\frac{(3x^2)^4}{9x^3}=\frac{3^4x^{2\cdot4}}{9x^3}=\frac{81x^8}{9x^3}=9x^{8-3}=9x^5$

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3 years ago