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3 years ago

What is the output value of 2x^2-9x-5 input value is x=2

Mathematics

1 answer:

Kobotan [32]3 years ago

5 0

Answer:

-15

Step-by-step explanation:

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F(x) = 2x and g(x) = x + 1, find f(3) and find gf(3)

lord [1]

Answer:

6 and 7

Step-by-step explanation:

To evaluate f(3), substitute x = 3 into f(x) , that is

f(3) = 2(3) = 6

To evaluate g(f(3)), substitute f(3) = 6 into g(x)

g(6) = 6 + 1 = 7

8 0

3 years ago

I'll mark u as brainliest pls help with these 2 questions

aev [14]

Answer:

3, 10

Step-by-step explanation:

5x-1=14 ->

5x=15 ->

x=3.

15+3x=45 ->

3x=45-15=30 ->

3x=30 ->

x=10.

Hope that help! :)

5 0

2 years ago

Read 2 more answers

That's the question ??

Oksanka [162]

Step-by-step explanation:

Before we answer, the area of a Circle given it radius is

$a = \pi r {}^{2}$

The area of a circle given it diameter is

$a = \pi( \frac{d}{2} ) {}^{2}$

So let answers question 1-4.

1. The area is

$1024\pi$

2. The area is

$576\pi$

$1.225\pi$

$309.76\pi$

For the 5th problem, circumference is

$\pi \times d$

where d is the diameter and

$2\pi r$

where r is the radius.

A circumference of 100 m means the radius is 50 because

$2\pi \times r = 100\pi$

$r = 50$

So this means the area is

$2500 {\pi}$

3 0

3 years ago

HELP ME ASAP.

slavikrds [6]

Answer:

The first number lets say is x

the second is y so

y=1/2x+8

x+1/2x+8=58

1 1/2x=50

x= 33 1/3

Hope This Helps!!!

6 0

3 years ago

Read 2 more answers

If g(x) is the inverse of f(x) and f(x) = 4x+12, what is g(x)?

prohojiy [21]

Answer:

Step-by-step explanation:

y=4x+12

x=4y+12

x-12=4y

1/4x-3

4 0

3 years ago