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barxatty [35]
3 years ago
12

Please help.....no one would help me so PLZZZZ

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
7 0

Answer:

Step-by-step explanation:

a) r = 10/2 = 5 feet

Area of floor =πr² =3.14*5*5 = 78.5 feet²

B) h = 3 foot

Volume of cylinder = πr²h = 3.14*5*5*3 = 235.5 cubic feet

Volume of hemisphere =2/3πr³= 2*3.14*5*5*5/3=261.67 cubic feet

Volume of space inside the observatory = 497.17 cubic feet

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Students sold 300 tickets for a playoff game in basketball at school. Some tickets are for students and cost $4.00, while the re
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So baically

reresent
s=number of studne tickes bouthgt
a=number of adult tickets bought

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total=300
a+s=300


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adults value=10a
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a. system of equations are
s+a=300
4s+10a=1950



b. solve

s+a=300
4s+10a=1950

a+s=300
multiply by -4
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add to other eqaution

4s+10a=1950
<u>-4s-4a=-1200  + </u>
0s+6a=750

6a=750
divide 6
a=125


subsiute
s+a=300
s+125=300
subtract 125
s=175






a. s+a=300
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b. solution above
175 students
125 aduls
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