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cestrela7 [59]
4 years ago
12

Twelve of the 20 students in Ms. Sarno’s homeroom are female. Each month, Ms. Sarno randomly selects a student to act as “teache

r’s helper.”
Which simulation best models the selection of female “teacher’s helpers” for January, February, March, and April?
A spinner, divided into 5 congruent sectors with three of the sectors representing female students, is spun 12 times.
A coin, with heads up representing female students, is flipped 4 times.
A bag of 15 marbles, with 9 marbles representing female students, has a marble drawn 4 times with replacement.
A number cube, with odd numbers representing female students, is rolled 12 times.
Mathematics
2 answers:
Jet001 [13]4 years ago
7 0

Answer:

the answerr is C

Step-by-step explanation:

Ksivusya [100]4 years ago
3 0

Answer:

C. A bag of 15 marbles , with 9 marbles representing female students, has a marble drawn 4 times with replacement

Step-by-step explanation:

i took the test and got it right ;)

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Answer 11
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A region is bounded by semicircular arcs constructed on the side of a square whose sides measure 2/\pi, as shown. What is the pe
Paladinen [302]

Answer:

4

Step-by-step explanation:

The perimeter of the region is equal to the sum of the perimeter of the four semicircular arc. Since the semicircular arcs have the same measure, therefore:

Perimeter of region = 4 × Perimeter of semicircular arc.

The side of the square = diameter of the semicircle = 2/π.

The radius of semicircle = diameter/2 = \frac{2/\pi}{2} =\frac{1}{\pi}

The perimeter of a semicircle = perimeter of a circle ÷ 2

Perimeter\ of \ semicircle = \frac{perimeter\ of\ circle}{2}=\frac{2\pi r}{2}=\frac{2\pi (\frac{1}{\pi} )}{2} =1\\  Perimeter\ of\ region = 4*Perimeter\ of \ semicircle=4*1=4\

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3 years ago
#16 plz and the answer and<br> Work plz!!!
wolverine [178]
(32/8)-18+4
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10
5 0
3 years ago
Help! please explain but if you don't explain that okay Too!!mark as brain
Mandarinka [93]

Answer:

A=2(wl+hl+hw)

that the formula

Length

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Step-by-step explanation:

Hope this helps :)

4 0
3 years ago
11+102 +73 = 186 total killed for ivory = 186 Total killed 19 + 129 + 139 = 287. What percent of the total elephants killed does
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Answer:

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