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makvit [3.9K]
3 years ago
6

Use the diagrams below to derive the formula for the volume of a hemisphere.

Mathematics
1 answer:
Zigmanuir [339]3 years ago
5 0

Answer:

2/3 \pir²

Step-by-step explanation:

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Kara did a survey to determine to study the types of pets that students in her school had. She surveyed 300 students and found t
julsineya [31]

Answer:

(C)81

Step-by-step explanation:

Total Number of Students =300

Percentage who had cats, n(C) = 40%

Percentage who had both cats and dogs , n(C \cap D) = 12%

Percentage who had neither cats nor dogs, n(C \cup D)' =45%

Now:

Universal Set, U = n(C)+n(D)-n(C \cap D)+n(C \cup D)'

100 = 40 + n(D)-12+45\\n(D)=100-73\\$Percentage of those who own dogs =27\%

Therefore:

Number of Students who had dogs

=27% of 300

=81

3 0
3 years ago
What are the steps to writing an equation from a graph? Give at least three steps.
zhannawk [14.2K]

Answer:

1. Calculate the slope from 2 points.

2. Substitute either point into the equation.

3.Solve for b, which is the y-intercept of the line.

4. Substitute b, -1, into the equation from step 2.

Step-by-step explanation:

I gave you one extra than what you expected, if thats ok.

Hope this helps : )

6 0
4 years ago
2/3 year is how many months
lutik1710 [3]

Answer:

2/3 of a year is 8 months.

Step-by-step explanation:

Since there is 12 months in a year, divide 12 by 3.

12÷3= 4

Now, multiply 4 by 2.

4×2= 8

This gives you the answer of 8 months.

4 0
4 years ago
Read 2 more answers
Find the distance between (1,2) and ( 7,2
OLga [1]
The distance between these points are 6
4 0
3 years ago
Answer plzz i really really really need help
IgorC [24]

Answer:

A,D,E, and F

Step-by-step explanation:

5 0
3 years ago
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