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2 years ago

Solve h=vt-gt^2, for v

Mathematics

2 answers:

Kruka [31]2 years ago

8 0

Answer:

v = (h/t) + gt.

Step-by-step explanation:

h = vt - gt^2

vt = h + gt^2

v = (h + gt^2) / t

v = (h/t) + gt.

Katarina [22]2 years ago

3 0

Answer:

$v=\dfrac{h+gt^2}{t}$

Step-by-step explanation:

As with any "solve for" problem, you undo what has been done to v, in reverse order. In this equation v has been ...

multiplied by t
had gt^2 subtracted from the product

So, the first step is to undo the subtraction by adding gt^2 to the equation:

h +gt^2 = vt

Now, we undo the multiplication by dividing by the coefficient of v.

(h +gt^2)/t = v

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statuscvo [17]

Answer:

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Step-by-step explanation:

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The confidence interval represents an interval that we can guarantee that the target variable will be within this interval for a given confidence level.

The confidence interval is given by

$CI = \bar{x} + t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } ) \\$

Where $\bar{x}$ is the mean weight $\sigma$ is the standard deviation $t_{\alpha/2}$ is the critical value from t-table and n is the sample size.

The term $t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } )$ is known as margin of error.

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The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

We can say with 95% confidence that the true mean weight of the rock is within the interval of (25.2, 29.1).

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2 years ago

Raya buys a van for £8500 plus VAT at 20%

asambeis [7]

They buy the van for £8,500 + VAT 20%:

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To find the amount of deposit, subtract the total payments from total cost:

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Step-by-step explanation:

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nadya68 [22]

Answer:

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Step-by-step explanation:

To find the percent increase, use the equation:

percent of increase=<u>amount of increase</u>

original amount

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