All categories

3 years ago

If f(x) =2x^2-4x, find 4 times f(x)

Mathematics

1 answer:

alexandr402 [8]3 years ago

8 0

The answer is 0.
[f(x)=2x^2-4x] * 4
2x^2=4x
4x-4x=0
0*4+0
I hope I helped!

You might be interested in

Please help out :)) and give a explanation

wolverine [178]

9514 1404 393

Answer:

y = 3x

Step-by-step explanation:

A proportional relation has the equation ...

y = kx

To write the desired equation, you need to know the value of k. That can be found from the given information:

for x = 2, y = 6

6 = k·2

3 = k . . . . divide by 2

Now, we know the equation can be written ...

y = 3x

5 0

3 years ago

Lucy is using a one-sample t ‑test based on a simple random sample of size n = 22 to test the null hypothesis H 0 : μ = 16.000 c

slega [8]

Answer:

The value of test statistic is 1.338

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 16.000

Sample mean, $\bar{x}$ = 16.218

Sample size, n = 22

Alpha, α = 0.05

Sample standard deviation, s = 0.764

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 16.000\text{ cm}\\H_A: \mu < 16.000\text{ cm}$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{16.218 - 16.000}{\frac{0.764}{\sqrt{22}} } = 1.338$

Thus, the value of test statistic is 1.338

4 0

3 years ago

Please help me find this.

VMariaS [17]

Answer:

Square I think

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Trick question<br> whats 50 divided by half plus 10

hoa [83]

$50:\frac{1}{2}+10=50\cdot\frac{2}{1}+10=50\cdot2+10=100+10=\boxed{110}$

5 0

3 years ago

I need help on 21 . Please

kupik [55]

Answer:

Air travels 6,920 meters in 20 seconds.

Step-by-step explanation:

If in one second air travels 346 meters, and you want to find out how many meters air travels in 20 seconds, then just multiply 346 by 20.

4 0

3 years ago