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2 years ago

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Mathematics

1 answer:

guapka [62]2 years ago

4 0

Answer:

what do u need help with?? :)

Step-by-step explanation:

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Evaluate the function f(x) at the given numbers (correct to six decimal places). F(x) = x2 − 5x x2 − x − 20 , x = 5.5, 5.1, 5.05

exis [7]

we are given

$f(x)=\frac{x^2-5x}{x^2-x-20}$

Firstly, we will simplify it

$f(x)=\frac{x(x-5)}{(x-5)(x+4)}$

$f(x)=\frac{x}{(x+4)}$

At x=5.5:

we can plug x=5.5

$f(5.5)=\frac{5.5}{(5.5+4)}$

$f(5.5)=0.578947$

At x=5.1:

we can plug x=5.1

$f(5.1)=\frac{5.1}{(5.1+4)}$

$f(5.1)=0.56043956$

At x=5.05:

we can plug x=5.05

$f(5.05)=\frac{5.05}{(5.05+4)}$

$f(5.05)=0.558011$

At x=5.01:

we can plug x=5.01

$f(5.01)=\frac{5.01}{(5.01+4)}$

$f(5.01)=0.5560488$

At x=5.005:

we can plug x=5.005

$f(5.005)=\frac{5.005}{(5.005+4)}$

$f(5.005)=0.5558023$

At x=5.001:

we can plug x=5.001

$f(5.001)=\frac{5.001}{(5.001+4)}$

$f(5.001)=0.5556049$

At x=4.9:

we can plug x=4.9

$f(4.9)=\frac{4.9}{(4.9+4)}$

$f(4.9)=0.5505617$

At x=4.95:

we can plug x=4.95

$f(4.95)=\frac{4.95}{(4.95+4)}$

$f(4.95)=0.5530726$

At x=4.99:

we can plug x=4.99

$f(4.99)=\frac{4.99}{(4.99+4)}$

$f(4.99)=0.55506117$

At x=4.995:

we can plug x=4.995

$f(4.995)=\frac{4.995}{(4.995+4)}$

$f(4.995)=0.55503085$

At x=4.999:

we can plug x=4.999

$f(4.999)=\frac{4.999}{(4.999+4)}$

$f(4.999)=0.55550616$

7 0

4 years ago

Simplify and then evaluate.

lozanna [386]

Answer:

The simplified expression is -4x and the value is -516

Step-by-step explanation:

−12x+14x−6x

Combine like terms

2x-6x

-4x

Let x =129

-4*129

-516

4 0

4 years ago

-0.4w = 4.2 what is this????

hram777 [196]

Answer: w = -10.5

Step-by-step explanation:

first, divide both sides by -0.4. basically, that leaves "w" alone on one side, and we are just dividing 4.2 by -0.4. that gets us the answer.

7 0

3 years ago

Find (x+h) for f(x)=3x^2

pishuonlain [190]

F(x) = 3x2+5x-2, find [f(x+h)-f(x)]/h

f(x+h) = 3(x+h)2 + 5(x+h) - 2
= 3(x2 + 2xh + h2)+ 5x + 5h -2
= 3x2 + 6xh + 3h2 + 5x + 5h - 2

f(x+h)-f(x) = 3x2 + 6xh + 3h2 + 5x + 5h - 2 - (3x2+5x-2)

= 6xh + 3h2 + 5h

[f(x+h)-f(x)]/h = (6xh + 3h2 + 5h)/h

= h(6x + 3h + 5)/h

= 6x + 3h + 5

6 0

3 years ago

Complete the equation of the line whose yyy-intercept is (0,5)(0,5)left parenthesis, 0, comma, 5, right parenthesis and slope is

Andreas93 [3]

Uhh the question is confusing

6 0

3 years ago

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