12. Use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 8 and the 8th term is 18.
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
So we have the equation:
Add 2 to both sides. The left cancels:
Divide both sides by 6. The left cancels:
So, the value of x is -1.
And we're done!
Solution :
Mean time for an automobile to run a 5000 mile check and service = 1.4 hours
Standard deviation = 0.7 hours
Maximum average service time = 1.6 hours for one automobile
The z - score for 1.6 hours =
= 2.02
Now checking a normal curve table the percentage of z score over 2.02 is 0.0217
Therefore the overtime that will have to be worked on only 0.217 or 2.017% of all days.
Hello!
The formula for finding area of a rectangle is length × width
<em><u>1st garden
</u></em>l = 10.25
<u><em /></u><em />w = 6.2
6.2 × 10.25 = 63.55
Area = 63.55 ft²
<em><u>2nd garden</u></em>
l = 20.5
w = 12.4
20.5 × 12.4 = 254.2
Area = 254.2 ft²
Divide the bigger area by the smaller area
254.2 ÷ 63.55 = 4
The formula for finding area of a rectangle is length × width
<em><u>1st garden
</u></em>l = 10.25
<u><em /></u><em />w = 6.2
6.2 × 10.25 = 63.55
Area = 63.55 ft²
<em><u>2nd garden</u></em>
l = 20.5
w = 12.4
20.5 × 12.4 = 254.2
Area = 254.2 ft²
Divide the bigger area by the smaller area
254.2 ÷ 63.55 = 4