4 years ago

The sum of three consecutive even numbers is 48. What are the smallest of these numbers?

Mathematics

1 answer:

algol [13]4 years ago

4 0

The smallest no. is 14
let start with
(x)+(x+2)+(x+4)=48
3x+6=48
3x=42
x=14

I hope this helped you :)

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If the dimensions of the following cylinder are doubled, what factor will the surface area change by?

AVprozaik [17]

To solve this problem you must apply the proccedure shown below:
1. You have that the radius and the height of the cylinder are:
$r=8 in \\ h=6 in$
2. So, you must calculate the area:
$A1=2 \pi (r+h)$
3. Substitute the values into the formula:
$A1=2 \pi (8 in)(8 in+6in) \\ A1=703.71 in^{2}$
4. When the radius and the height are doubled, you obtain:
$A2=2 \pi (16 in)(16 in+12 in) \\ A2=2814.86 in^{2}$
5. The factor is:
$F=2814.8 in^{2}/703.71 in^{2} \\ F=4$
The answer is: B. $4
$