The 90% confidence interval is (70 - 4, 70 + 4). The margin of error is 4%.
Answer:
x = 5
Step-by-step explanation:
Add three to 17 and your answer will be 20, then divide 20 and 4 and your answer is 5
4800 meters per 60 minutes
Divide 4800 meters by 60 minutes
80meters per minute
Answer:
the answer is 224 decimeters
Step-by-step explanation:
first you need to draw a box than label the length and with which is 14 by 16 and then you can use the formula A=L*W. Know you can plug the numbers in 14*16 which equals 224 and that would be your answer
Answer:
10 minutes
Step-by-step explanation:
Let the number of minutes = x
It costs Guido $0.20 per minute to forward voicemail messages as texts to his cell phone. He already spent $4 in forwarding messages this month.
For Guido
$4 + 0.20x
His mom has spent $2 forwarding messages. It costs her $0.40 per minute so she can call long distance.
For his mum
$2 + 0.40x
Guido's mom said they have to spend the same amount.
Equating both Equations together
$4 + 0.20x = $2 + 0.40x
$4 - $2 = 0.40x - 0.20x
2 = 0.20x
x = 2/0.20
x = 10 minutes
Guido can talk for 10 minutes
