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Lesechka [4]
3 years ago
8

What is 7/22 of a minute into seconds

Mathematics
2 answers:
Shtirlitz [24]3 years ago
8 0
18.6 seconds ...................
kykrilka [37]3 years ago
5 0

Answer:

18.9

Step-by-step explanation:

7/22 of 60=

60÷22= 2.7

2.7×7= 18.9

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A solid right pyramid has a square base. The length of the base edge is4 cm and the height of the pyramid is 3 cm period what is
Illusion [34]

Answer:

The volume of this pyramid is 16 cm³.

Step-by-step explanation:

The volume V of a solid pyramid can be given as:

\displaystyle V = \frac{1}{3} \cdot b \cdot h,

where

  • b is the area of the base of the pyramid, and
  • h is the height of the pyramid.

Here's how to solve this problem with calculus without using the previous formula.

Imaging cutting the square-base pyramid in half, horizontally. Each horizontal cross-section will be a square. The lengths of these squares' sides range from 0 cm to 3 cm. This length will be also be proportional to the vertical distance from the vertice of the pyramid.

Refer to the sketch attached. Let the vertical distance from the vertice be x cm.

  • At the vertice of this pyramid, x = 0 and the length of a side of the square is also 0.
  • At the base of this pyramid, x = 3 and the length of a side of the square is 4 cm.

As a result, the length of a side of the square will be

\displaystyle \frac{x}{3}\times 4 = \frac{4}{3}x.

The area of the square will be

\displaystyle \left(\frac{4}{3}x\right)^{2} = \frac{16}{9}x^{2}.

Integrate the area of the horizontal cross-section with respect to x

  • from the top of the pyramid, where x = 0,
  • to the base, where x = 3.

\displaystyle \begin{aligned}\int_{0}^{3}{\frac{16}{9}x^{2}\cdot dx} &= \frac{16}{9}\int_{0}^{3}{x^{2}\cdot dx}\\ &= \frac{16}{9}\cdot \left(\frac{1}{3}\int_{0}^{3}{3x^{2}\cdot dx}\right) & \text{Set up the integrand for power rule}\\ &= \left.\frac{16}{9}\times \frac{1}{3}\cdot x^{3}\right|^{3}_{0}\\ &= \frac{16}{27}\times 3^{3} \\ &= 16\end{aligned}.

In other words, the volume of this pyramid is 16 cubic centimeters.

5 0
2 years ago
Please help i don't understand it
Leto [7]

Answer:

for question #1) 6 times n + 12 = 60

Step-by-step explanation:

it works trust me

ps. im in high school in a GT math class

8 0
3 years ago
Sam and Edna have 56 marbles together. Edna had six times more marbles than Sam. How many Mor marbles does Sam have
Aliun [14]
X+6x=56. 7x=56. Divide each side by 7 to get x=8. So Edna has 48 marbles. Sam has 8 marbles. She has 40 more marbles. Hope this helps! ;)
8 0
3 years ago
I NEED THE ANSWR ASAP: Write the number as a power with a base of 5.<br> 125^3
EastWind [94]

Answer:

5^9

Step-by-step explanation:

I had this question before.

5 0
2 years ago
50 points !! Please help, If you wanna do the work then i'll give brainliest but you dont have to. DO NOT!! I REPEAT DO NOTT!! D
Tasya [4]

-27 divided by 9 = -3, 4 x -6 = -24, 12 x -10 = -120, -45 divided by -5 = 9, 7 x -3 = -21, 72 divided by -8 = -9, 64 dibided by 8 is 8, and -8 x 6 is -48. good luck!! ^_^

5 0
2 years ago
Read 2 more answers
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