Tom earns $12 a week mowing lawns. He spends
2 answers:
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Answer: i. Cost of adult ticket = $ 30
ii. Cost of child ticket = $20
Step-by-step explanation:
Define variables:
Let x= cost of 1 adult tickets , y= cost of 1 child tickets.
Form linear equations:
5x+3y = 210 (i)
2x+5y= 160 (ii)
Multiply (i) by 2 and (ii) by 5
10x +6y = 420 (iii)
10x+25y = 800 (iv)
Eliminate (iii) from (iv)
19y = 380
⇒ y= 20
Put this in (i)
Hence, Cost of adult ticket = $ 30 and Cost of child ticket = $20
For this case we have by definition, that the volume of a sphere is given by:
Where:
r: It is the radius of the sphere
If the radius is divided by 3 we have:
ANswer:
the volume decreases considerably because the denominator increases