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Papessa [141]
2 years ago
14

Please solve this linear algebra equation for 15 points.

Mathematics
1 answer:
KATRIN_1 [288]2 years ago
6 0

Answer:

[6

-1.5]

the six and 1.5 are in the same bracket the 6 in ontop

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The formula for the volume of a cone is V = jarh, where V is the volume, r is the radius, and h Is the heightWhat is the volume
olga nikolaevna [1]

Given:

The radius, r=4x

The height,

h=21xy^2

To find the volume of the cone:

The volume of the cone formula is,

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

Substitute the values of r and h in the above formula we get,

\begin{gathered} V=\frac{1}{3}\pi\times(4x)^2\times21xy^2 \\ =\frac{1}{3}\pi\times16x^2\times21xy^2 \\ =\pi\times16x^2\times7xy^2 \\ =112\pi x^3y^2 \end{gathered}

Hence, the volume of the cone is

V=112\pi x^3y^2

Thus, the correct option is option D.

7 0
1 year ago
A line has slope 5/6 and y-intercept-3
viva [34]

Answer:

The equation would be y = 5/6x - 3

Step-by-step explanation:

8 0
3 years ago
Please help as soon as possible
Studentka2010 [4]
The lines are reciprocal because they cross to form an X. Also 4/5 is the reciprocal of 5/4
4 0
3 years ago
Read 2 more answers
The length of a rectangle is eight feet more than its width. The area of the rectangle is six hundred nine square feet. What are
vodomira [7]
You can write two equations using the given information:
.. L = W +8
.. L * W = 609
Using substitution, you get a quadratic.
.. (W +8) * W = 609
.. W^2 +8W -609 = 0
Not surprisingly, you're looking for factors of 609 that differ by 8.
.. 609 = 1*609 = 3*203 = 7*87 = 21*29
The last two are the factors of interest.
.. (W +29)(W -21) = 0

The width of the rectangle is 21 feet, the length is 29 feet.

_____
Sometimes it is easier to work with the average dimension. Here, let that be x. Then you have
.. (x +4)(x -4) = 609
.. x^2 -16 = 609
.. x^2 = 625 = 25^2 . . . . . . . one of your memorized math facts
So, the dimensions are
.. 25 +4 = 29 by 25 -4 = 21, that is, 29 ft by 21 ft.
5 0
3 years ago
Can someone help me with this one
umka21 [38]

So, i will give the point slope form and then you can sole it out.

Using point (4,1) and (3,4)

SLOPE: 4-1/3-4=3/-1=-3

Using (4,1)

y-1=-3(x-4)

Then you have to isolate y

5 0
3 years ago
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