Did these sales increase decrease stay the same or are they undetermined
1 answer:
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Answer:
9, 30, and 15.
Step-by-step explanation:
Let the three numbers be a, b, and c.
The sum of them is 54. So:
The third number is 6 more than the first. In other words, c=a+6.
The second number is twice the third. In other words, b=2c.
Let’s write the second number in terms of a. Since b=2c, this means that b=2(a+6).
Let’s substitute them into our equation. So:
Solve for a. Distribute:
Combine like terms:
Subtract 18 from both sides:
Hence, the value of a is:
So, the first number is 9.
The third number is 6 more than the first, so the third number is 15.
The second number is twice the third. So, the second number is 30.
Therefore, our numbers are:
9, 30, and 15.
Answer:
255.61 inch³
Step-by-step explanation:
Volume of sphere is given by
V = πr³
Given that the original sphere had a radius of 5 cm, and that this is enlarged by a scale factor of 2, the new radius is
r = 5 cm x 2 = 10 cm
since 1 cm = 0.3937 inches, (need to convert to inches)
10 cm = 3.937 inches
hence r = 3.937 inches
V = x π x 3.937³
= 255.61 inch³