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Ugo [173]
3 years ago
9

There are 25 students in Mrs. Venetozzi’s class at the beginning of the school year, and the average number of siblings for each

student is 3. A new student with 8 siblings joins the class in November.The average number of siblings that each student has is
Mathematics
2 answers:
NeTakaya3 years ago
8 0
THE ANSWER IS 83!!!!!!!!!!
leva [86]3 years ago
6 0

Answer:

The new average is  

83

÷

26

=

3

5

26

exactly

83

÷

26

≈

3.192

to 3 decimal places

Explanation:

Assumption: None of the siblings are in that class.

Original numbers

25 students with 3 siblings each gives  

25

×

3

=

75

siblings

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

New numbers

1 new student takes the total students to 25+1 = 26

The new total siblings is  

75

+

8

=

83

The new average is  

83

÷

26

=

3

5

26

exactly

83

÷

26

≈

3.192

to 3 decimal places

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Answer:

35 miles

Step-by-step explanation:

5 0
3 years ago
If FE measures 20 centimeters, the approximate area of circle B is what
MAXImum [283]

If FE measures 20 cm, then the area is 314 cm², if BE measure 3.5 cm, then the area is 38.5 cm², if AB measures 11 cm, then the area is 380 cm² and is EF measures 12 cm, then the area is 113 cm².

Area of a circle:

A = π r²

r = 1 /2 of diameter.

FE is the diameter

r = 20 / 2

r = 10 cm

Area of circle using FE:

A =  π ( 10 )² = π × 100 = 314 cm²

BE is a radius:

Area = π × 3.5² = π × 12.25 = 38.465

A = 38.5 cm²

AB is a radius:

Area = π × 11²
A = π × 121

A = 379.94 = 380 cm²

EF is a diameter:

r = 12 / 2 = 6 cm

Area = π × 6²

A = π × 36

A = 113.04 = 113 cm²

Therefore, if FE measures 20 cm, then the area is 314 cm², if BE measure 3.5 cm, then the area is 38.5 cm², if AB measures 11 cm, then the area is 380 cm² and is EF measures 12 cm, then the area is 113 cm².

Learn more about area here:

brainly.com/question/25292087

#SPJ9

Your question was incomplete, Please refer the content below:

1) if FE measures 20 centimeters, the approximate area of circle B is what?

2) if BE measures 3.5 centimeters, the approximate area of circle B is what?

3) if AB measures eleven centimeters, the approximate area of circle B is what

4) If EF measures twelve centimeters, the approximate area of circle B is what?

6 0
1 year ago
Solve S = 2πrh for r
Elodia [21]
Divide both sides by 2<span>πh:-

r = S / 2</span><span>πh  Answer</span>
6 0
3 years ago
5.
horsena [70]
Need to know the radius.
7 0
3 years ago
A leak in a pool causes the height of the water to decrease by 0.25 foot over 2 hours. After the leak is fixed, the height of th
slavikrds [6]

Answer:

Assuming the leak took 2 hours to fix, the original height of the pool is 5 feet.

Step-by-step explanation:

This is probably the most simple "high school" problem I've seen in a while. All you have to do is move the negative 0.25 to the other side to isolate x. That gives you 4.75 + 0.25, or 5 feet.

5 0
3 years ago
Read 2 more answers
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