Answer:
![x=3\text{ or } x=-3](https://tex.z-dn.net/?f=x%3D3%5Ctext%7B%20or%20%7D%20x%3D-3)
Step-by-step explanation:
So we have the equation:
![|6x|+3=21](https://tex.z-dn.net/?f=%7C6x%7C%2B3%3D21)
First, subtract 3 from both sides:
![|6x|=18](https://tex.z-dn.net/?f=%7C6x%7C%3D18)
Definition of absolute value:
![6x=18\text{ or } 6x=-18](https://tex.z-dn.net/?f=6x%3D18%5Ctext%7B%20or%20%7D%206x%3D-18)
Divide both sides by 6 for both equations:
![x=3\text{ or } x=-3](https://tex.z-dn.net/?f=x%3D3%5Ctext%7B%20or%20%7D%20x%3D-3)
And we're done!
Answer:
It costs $0.216 to make smaller can and $0.324 to make larger can
Step-by-step explanation:
Given:
The ratio of the surface areas = 4:9
Area of smaller cans = 36 sq in
Cost = $0.006 per square inch
To Find:
how much does it cost to make each can = ?
Solution:
Lets the area of the larger can be x
the ratio is 4 : 9
then 4x = 9.(36)
4x = 216
![x = \frac{216}{4}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B216%7D%7B4%7D)
x = 54
The area of the larger can is 54 sq in
Now the cost of making the smaller can =
= $0.216
The cost of making the Larger can =
=$0.324
Number of boys:
1000/2+20/2=510
Number of girls:
1000/2-20/2=490
510 boys and 490 girls competed at Special Olympics
Answer: true
Step-by-step explanation: