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Yuri [45]
3 years ago
14

type the correct answer in the box. The formula for the volume, V, of a cone having the radius, r, and the height, h, is shown b

elow. Write the formula to calculate the height, h.
Mathematics
2 answers:
BigorU [14]3 years ago
8 0

Answer:

You have to make h the subject using volume of cone formula :

v =  \frac{1}{3}  \times \pi \times   {r}^{2}  \times h

3v = \pi {r}^{2}  \times h

\frac{3v}{\pi {r}^{2} }  = h

h =  \frac{3v}{\pi {r}^{2} }

Phantasy [73]3 years ago
4 0

Answer:

h=3v/a^2

Step-by-step explanation:

You might be interested in
a line is perpendicular to y=-2x+5 and intersects the point (-4,2). what is the equation of this perpendicular line?
german

Answer:

y = 1/2x + 4

Step-by-step explanation:

If the line is perpendicular to y = -2x + 5 then the new line has a slope of 1/2.

So solve for b: using y = mx + b

2 = 1/2(-4) + b

2 = -2 + b

4 = b

Put it all together

y = 1/2x + 4

6 0
3 years ago
Catherine invested a principal of $1,650 in her bank account with interest rate 3.1 % How much interest did she earn in 14 years
never [62]

Answer:

$693

Step-by-step explanation:

Catherine invested a principal of $1,650 in her bank account with;

interest rate of 3.1%

How much interest did she earn in 14 years?

To find the amount accumulated in the 14 years, we use the formula:

A = P(1 + rt)

Where A is the amount accumulated, P is the principal, r is the interest rate and t is the time.

A = $1650(1 + \frac{3}{100}(14))

A = $1650 + $693 = $2343

Interest = Amount (A) - Principal (P) = $2343 - $1650 = $693

7 0
3 years ago
Read 2 more answers
The value of 5s in 25,578
mash [69]

Answer:

500 and 5,000

Step-by-step explanation:

The value of the first 5 is five hundred (500)

The value of the second is five thousand (5,000)

7 0
3 years ago
To help consumers assess the risks they are​ taking, the Food and Drug Administration​ (FDA) publishes the amount of nicotine fo
Anni [7]

Answer:

The 90​% confidence interval for the mean nicotine content of this brand of cigarette is between 20.3 milligrams and 30.3 milligrams.

Step-by-step explanation:

We have the standard deviation for the sample, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 9 - 1 = 8

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 8 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 1.8595

The margin of error is:

M = T*s = 1.8595*2.7 = 5

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 25.3 - 5 = 20.3 milligrams

The upper end of the interval is the sample mean added to M. So it is 25.3 + 5 = 30.3 milligrams.

The 90​% confidence interval for the mean nicotine content of this brand of cigarette is between 20.3 milligrams and 30.3 milligrams.

7 0
3 years ago
Better buy water at target
Mice21 [21]

Answer:

Correct

Step-by-step explanation:

Shop Target for Water you will love at great low prices. Free shipping on orders of $35+ or same-day pick-up in store.

3 0
4 years ago
Read 2 more answers
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