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Allushta [10]
3 years ago
13

Brainielst!! Last 3 questions please!

Mathematics
1 answer:
mariarad [96]3 years ago
5 0
Hello There!

Surface area of a sphere formula:
4πr²
SA = 4π14.21²
SA = 2537.5mm³

Surface area of a cone formula:
1/3πr²5
SA = 1/3π3²15.1
SA = 142.3in³

Pyramid:
SA = 124.3

Hope This Helps You!
Good Luck :) 

- Hannah ❤ 

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3. 3.A) The angles of triangle ABC are in the ratio of 8:3:4. What is the measure of the smallest angle?​
Vanyuwa [196]

Answer:

36 degrees.

Step-by-step explanation:

8+3+4=15

180/15=12

12x3=36 degrees.

6 0
2 years ago
Consider a total of 1,000 people. If it was said that within 1 deviation (of the mean) of all people like MATH 123, how many of
Lesechka [4]

Answer:

680 students

Step-by-step explanation:

The 68 - 95 - 99.7  rule (empirical rule) states that 68% of the population lies within one standard deviation of the mean,  95% of the population lies within two standard deviations and 95% of the population lies within three standard deviations.

Hence since it was said that within 1 deviation (of the mean) of all people like MATH 123, therefore the number of people that like MATH 123 is:

number of people that like MATH 123 = 68% of the population

number of people that like MATH 123 = 0.68 * 1000

number of people that like MATH 123 = 680 students

3 0
2 years ago
What is the perimeter of a square which has the same area as a circle with circumfrence of 4π
Kruka [31]

Answer:

Perimeter square = 8 sqrt(pi)

Step-by-step explanation:

The perimeter of a square is 4*s

The area of a circle is Area = pi * r^2

The circumference of a circle is C = 2*pi * r

C = 4 pi

4pi = 2*pi * r

r = 2

So the area of the circle is pi * r^2 = pi * 2^2 = 4pi

The square has the same area

Area = 4*pi

Square = 4*pi

s^2 = 4*pi

s = sqrt(4*pi)

s = 2*sqrt(pi)

The perimeter = 4 * 2 * sqrt(pi)

The perimeter = 8 * sqrt(pi)

8 0
2 years ago
Explain to me in words how you would find the slope of this line
vekshin1

Answer:

Step-by-step explanation:

go from one point to the other. From the left point to the right point you are running across (to the right) three times. Then you are ¨rising¨ (going down) once. going to the right is positive. If you are going down its negative. Vise versa. The formula is Rise/Run. your answer would be -1/3. the one is negative because it went down.Then divide it and you have -0.333. I hope I helped!

8 0
2 years ago
Which shows all the equations that represent
Arturiano [62]

Answer:

the answer is H because it is h

5 0
2 years ago
Read 2 more answers
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