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exis [7]
3 years ago
5

Am I correct?(all questions) If not explain how to get the right answer. Please

Mathematics
1 answer:
Basile [38]3 years ago
3 0
Yea u are correct check ur work again
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If h = 12 units and r = 4 units, what is the volume of the cone shown above? Use 3.14 for .
Feliz [49]

Answer:

200.96 units

Step-by-step explanation:

Use the formula for the volume of a cone V=\pi  r^{2} \frac{h}{3}

Plug in the values (\pi=3.14) and multiply them all out

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3 years ago
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4-4/9x=2/3<br> Rewrite so there no more fractions
Sergio [31]

Answer:

x=7.5

Step-by-step explanation:

4-4/9x=2/3

-4/9x=2/3-4/1

-4/9x=-12/3-2/3

-4/9x=-10/3

TIMES 3 To each side.

-4x=-30

x=7.5

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3 years ago
The swimming pool at lifetime city health and fitness club measures 20 meters in length and 15 meters in width wat is the are of
8_murik_8 [283]
20*15 is 300 meters which is the area
8 0
3 years ago
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Will give BRAINLEST :)
DiKsa [7]

Answer:

A

Step-by-step explanation:

This explanation mostly depends on what you're learning right now. The first way would be to convert this matrix to a system of equations like this.

g + t + k = 90

g + 2t - k = 55

-g - t + 3k = 30

Then you solve using normal methods of substitution or elimination. It seems to me that elimination is the quickest method.

g + t + k = 90

-g - t + 3k = 30

____________

0 + 0 + 4k = 120

4k = 120

k = 30

No you can plug this into the first two equations

g + t + (30) = 90

g + t = 60

and

g + 2t - (30) = 55

g + 2t = 85

now use elimination again by multiplying the first equation by -1

g + 2t = 85

-g - t = -60

_________

0 + t = 25

t = 25

Now plug those both back into one of the equations. I'll just do the first one.

g + (25) + (30) = 90

g = 35

Therefore, we know that Ted spent the least amount of time on the computer.

The second method is using matrix reduction and getting the matrix in the row echelon form, therefore solving using the gauss jordan method. If you would like me to go through this instead, please leave a comment.

3 0
2 years ago
Solve the equation. If there is no solution, write no solution. –2 |h – 7| = –28
Elodia [21]
The answer is, A) No solution
8 0
3 years ago
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