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3 years ago

Mount St. Helen’s is 2549.652 meter above sea level. What is Donald he height in feet ( 1 foot=.3048 meters)

Mathematics

1 answer:

galben [10]3 years ago

8 0

Answer: 8365 meters.

Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

1. You have the following information given in the exercise:

- Mount St. Helen’s is 2549.652 meter above sea level.

- 1 foot=0.3048 meters

2. Let's call x the height in feet, therefore, you have:

$x=\frac{(1ft)(2549.652m)}{0.3048m}\\x=8365m$

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Answer:

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Step-by-step explanation:

Expand the brackets

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Answer: It should take her 13 weeks.

Step-by-step explanation:

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3 years ago

this is formula manipulation, I'd appreciate if the steps were provided. only respond if you know how to get the answer, thank y

marissa [1.9K]

Answer:

r = 3V/(2πh²)
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Step-by-step explanation:

1. Multiply both sides of the equation by the reciprocal of the coefficient of r.

$V\cdot\dfrac{3}{2\pi h^2}=r\\\\r=\dfrac{3V}{2\pi h^2}$

2. Multiply both sides of the equation by the reciprocal of the coefficient of h.

$V\cdot\dfrac{3}{b^2}=h\\\\h=\dfrac{3V}{b^2}$

3. Solve the circumference formula for r, then substitute the given information.

$C=2\pi r\\\\r=\dfrac{C}{2\pi}\qquad\text{divide by the coefficient of r}\\\\r=\dfrac{50\,\text{cm}}{2\pi}=\dfrac{25}{\pi}\,\text{cm}\approx 7.9577\,\text{cm}$

4. Solve the perimeter formula for width, the substitute the given information and do the arithmetic.

$P=2(L+W)\\\\\dfrac{P}{2}=L+W\qquad\text{divide by 2}\\\\\dfrac{P}{2}-L=W\qquad\text{subtract L}\\\\\dfrac{40\,\text{cm}}{2}-5\,\text{cm}=W=15\,\text{cm}$

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In general, solving for a particular variable involves "undoing" what has been done to the variable, usually in the reverse order. In part 4, the variable W has L added and the sum is multiplied by 2. We "undo" those operations, last operation first, by dividing by 2 and subtracting L.

The properties of equality say you can do what you like to an equation as long as you do the same thing to both sides of the equation. So, when we say "divide by 2", we mean "divide both sides of the equation by 2." Likewise, "subtract L" means "subtract L from both sides of the equation."

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3 years ago

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3 years ago