2x2+5x-12 solve this equation
2 answers:
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Answer:
Kira takes 35 minutes to get ready for school.
Step-by-step explanation:
The time taken by Jared to get ready for school is, 60 minutes.
Time taken by Kira to get ready for school is times as much as Jared needs.
Compute the time taken by Kira as follows:
Time taken by Kira
Thus, Kira takes 35 minutes to get ready for school.
Answer:
The volume of the observatory is 497.43
Step-by-step explanation:
i) The diameter of the floor is 10 feet. The floor is circular and has a radius,
r = = 5 feet.
Therefore the area of the circular floor of the observatory
= = 3.14159 ×
= 78.54
ii) The observatory is made up of two parts
a) 3 foot tall cylinder
∴ volume of cylinder = × h
= 78.54 × 3
= 235.62
b) hemisphere = ×
= 0.6667 × 78.54 × 5 = 261.81
c) Therefore the total volume of the observatory is = a) + b)
= 235.62 + 261.81 = 497.43