-k(-4k^2+k+2) Best one and simplest one gets the brainliest, I'm In a rush.

Mathematics

2 answers:

murzikaleks [220]3 years ago

7 0

Answer:

$- 2k - {k}^{2} + 4 {k}^{3}$

Step-by-step explanation:

According to the Product-to-Power Exponential Rule, whenever you multiply terms with exponents and coefficients, you add the exponents:

-k[-4k² + k + 2]

4k³ - k² -2k

The above answer is written in reverse, but it is the exact same result.

I am joyous to assist you anytime.

sasho [114]3 years ago

4 0

Answer:

4k^3 - k^2 - 2k

Step-by-step explanation:

-k * -4k^2 = 4k^3

-k * k = -k^2

-k * 2 = -2k

4k^3 - k^2 - 2k

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Hatshy [7]

Answer:

The 99% confidence interval for the mean peak power after training is [299.4, 330.6]

$299.4\leq\mu\leq 330.6$

Step-by-step explanation:

We have to construct a 99% confidence interval for the mean.

A sample of n=7 males is taken. We know the sample mean = 315 watts and the sample standard deviation = 16 watts.

For a 99% confidence interval, the value of z is z=2.58.

We can calculate the confidence interval as:

$M-z\sigma/\sqrt{n}\leq\mu\leq M+z\sigma/\sqrt{n}\\\\315-2.58*16/\sqrt{7}\leq\mu\leq 315+2.58*16/\sqrt{7}\\\\315-15.6\leq \mu\leq 315+15.6\\\\299.4\leq\mu\leq 330.6$