Answer:
{
}U{
}
Step-by-step explanation:
Given the inequality
you need to set up two posibilities:
FIRST POSIBILITY : 
SECOND POSIBILTY: 
Therefore, you got that:
Knowing this, you can write the solution obtained in Set notation. This is:
Solution: {
}U{
}
Answer:
65 coins
Step-by-step explanation:
Set this problem up with a porportion.

After that, cross multiple and divide.
25 times 260. Then divide by 100. That is then your answer.
Answer:
x = ± i 
Step-by-step explanation:
Given
3x² + 6 = 0 ( subtract 6 from both sides )
3x² = - 6 ( divide both sides by 3 )
x² = - 2 ( take the square root of both sides )
x = ± 
= ± 
= ± (
×
) →
= i
= ± i 
Answer: 12 minutes per mile
Step-by-step explanation: 20 miles) / (4 hours) = (20/4) (miles/hours) = 5 miles per hour
(4 hours) / (20 miles) = (4/20) (hours/miles) = 0.2 hours per mile
Answer:
21 yards
Step-by-step explanation:
12 + 8 = 20
2/3 + 1/3 = 1
20 + 1 = 21 yards of gold ribbon