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3 years ago

(5h-4)-(h-5) combining like terms

1 answer:

5 0

Distribute the negative throughout the set of parenthesis

5h-4-h+5

Ok, so your like terms are...

5h and -h

-4 and +5

If you rearrange the terms so that the like terms are next to each other, it is easier to combine them:

5h-h-4+5

5h-h=4h

-4+5=1

So, the problem is:

4h+1

Hope that helps :)

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3 years ago

Two birds sit at the top of two different trees. The distance between the first bird and a birdwatcher on the ground is 32 feet.

mestny [16]

Answer:

x = 45.3°

Step-by-step explanation:

The distant between the first bird and the bird watcher is opposite to the reference angle, x° = 32 ft

The hypotenuse is the distance between the second bird and the bird watcher = 45 ft.

Therefore,

$sin(x) = \frac{opp}{hyp} = \frac{32}{45}$

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3 years ago

What is the equation of the line, in slope-intercept form, that passes through (3, -1) and (-1, 5)?

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4 years ago

By reporting only p-values, many scientific publications provide an incomplete story of their findings.

11Alexandr11 [23.1K]

Answer:

Step-by-step explanation:

The p-value is a measurement of the likelihood that a difference observed is due to a random chance or a sampling error. In an alternative way, the p-value of a study represents the probability or area under distribution for obtaining more radical outcomes whenever the null hypothesis is true.

Any observable change is deemed to be addressed by sampling variability if the P-value is greater than the selected alpha level. A statistical test will nearly always show a substantial difference with a suitably big sample unless there is no impact at all when the effect size is exactly zero.

As a result, simply reporting the P-value alone for a study is insufficient to fully validate the results and findings of scientific publications.

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3 years ago

When Adam got a new locker at the gym, he had to choose a password. For this locker, a password consists of

joja [24]

Given:

Adam's locker has a password that consists of 4 non-repeated letters from A - Z.

To find:

The number of different passwords.

Solution:

Total number of letters from A - Z is 26.

So, the number of selecting a letter for first place is 26.

The passwords consists non-repeated letters. So, the remaining numbers is $26-1=25$ .

The number of selecting a letter for second place is 25.

Similarly,

The number of selecting a letter for third place is 24.

The number of selecting a letter for fourth place is 23.

The total number of possible different passwords is:

$26\times 25\times 24\times 23=358800$

Therefore, the total number of different passwords is 358800.

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3 years ago