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atroni [7]
3 years ago
6

PLEASSE HELLPPP 4

Mathematics
1 answer:
jeka943 years ago
6 0

the volume of a cone with a height of 27cm and a radius of 13cm is 4748.36242611007.Then you round it to the nearest tenth which would be 4,778.4 which would be the answer

you work out that by v=PI radius squared height divided by 3

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Question Write an equation of the line passing through the point A(0, 3) that is perpendicular to the line y = −1/2x−6
White raven [17]

Answer:

The equation would be y=2x+3 I am pretty sure

Step-by-step explanation:

This is because you take the slope which is 2 from the line y=-1/2x-6. To find the slope perpendicular to the line, you need to find the exact opposite of the slope: -1/2, and in this case, it would be 2.

(Ex: if it was -3/4, you would need to use a slope of 4/3 since it is the opposite)

Then you take that slope (2) and the point (0, 3) and put it into "y-y1=m(x-x1)"

y-y1=m(x-x1)

y-3=2(x-0)

-distribute the 2-

y-3=2x-0

-add 3 on both sides-

so equation would be y=2x+3

Not sure if this is all correct, but I hope it helps! :)

7 0
3 years ago
How is this equation wrong?? I’m giving brainlest
Bezzdna [24]

Answer:

It isn't?

Step-by-step explanation:

Step 1:

x + 8y = 21

x + 8y - 8y = 21 - 8y

x = -8y + 21

Step 2:

(-8y + 21) + 8y = 21

-8y + 21 + 8y = 21

21 = 21

6 0
3 years ago
A random variable X has a mean of 120 and a standard deviation of 15 a random variable Y has a mean of 100 and a standard deviat
torisob [31]

Answer:

The standard deviation is 17.5

Step-by-step explanation:

Let S be the sum of X and Y

S = X + Y

So we want to calculate the standard deviation of S

The standard deviation of S will be the square root of the sum of the variances of X and Y

Kindly recall that variance is the square of standard deviation

The variance of X will be 15^2 = 225

The variance of Y will be 9^2 = 81

So the standard deviation of the sum will be

√(81 + 225)

= √(306)

= 17.5

7 0
3 years ago
U=12kx^2 What is x equal to?
Maslowich

Answer:

\sqrt{u \div 12k \\ }

Step-by-step explanation:

u=12kx^2

x^2=u/12k

...x=

\sqrt{u \div 12k}

4 0
3 years ago
An oblique cylinder with a base of radius 2 units is shown. The top
Anuta_ua [19.1K]

The volume of the cylinder is the amount of space on it

The volume of the oblique cylinder is 174.19 cubic units

<h3>How to determine the volume of the cylinder?</h3>

The given parameters are:

AB = 16 units

Radius (r) = 2 units

\theta = 30^o

Start  by calculating the height (h) using:

h = 16 * \cos(30^o)

This gives

h = 13.86

The volume of the cylinder is then calculated as:

V = \pi r^2 h

This gives

V = 3.142 * 2^2 * 13.86

V = 174.19248

Approximate

V = 174.19

Hence, the volume of the oblique cylinder is 174.19 cubic units

Read more about volumes at:

brainly.com/question/1972490

6 0
2 years ago
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