I need help asap :-) plzzzz

Mathematics

1 answer:

svlad2 [7]3 years ago

8 0

Answer:

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Step-by-step explanation:

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F(x)=x^2+4x-3. Find value f(3)

Butoxors [25]

Just substitute the "x's" in the equation for 3.

F(3) = 3^2+4(3)-3

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3 years ago

Question 14. Select the correct answer. If f(x)=x^2/x+3, find f(x+h)

vekshin1

Answer:

$f(x+h)=\frac{x^2+2h+h^2}{x+h+3}$

Step-by-step explanation:

we have

$f(x)=\frac{x^2}{x+3}$

To find out f(x+h), substitute the variable x by the variable (x+h) in the function f(x)

$f(x+h)=\frac{(x+h)^2}{(x+h)+3}$

$f(x+h)=\frac{x^2+2h+h^2}{x+h+3}$

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4 years ago

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16 times 3.14 is 49.6 that’s the answer

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3 years ago

In a journey of 15 miles, two third distance was travelled with 40 mph and remaining with 60 mph. How much time does the journey

Ad libitum [116K]

The first step in solving this question is to split the journey into 2 parts. In the first part of the journey, $\frac{2}{3} \times 15 = 10$ miles are covered at a speed of 40 mph. In the second part the journey 5 miles are covered at a speed of 60 mph.

The equation to compute the time of a journey given the speed and distance is $t=\frac{d}{s}$ where $t$ is the time, $s$ is the speed and $d$ is the distance.