Answer:
Hi your question is incomplete attached below is the complete question
answer : p ( X < 725 ) = 0.0116
Step-by-step explanation:
Given data:
Average life of bulbs (μ ) = 750 hours
standard deviation (б ) = 55 hours
n ( sample size ) = 25
X = 725
<u>Probability that the mean life of a random sample of 25 bulbs will be less than725 hours </u>
p ( X < 725 ) = p (( X - μ )/ б √n < 725 - 750 / 55√25 )
= P ( Z > - 2.27 )
Hence P ( X < 725 ) = 0.0116 ( using Z-table )
Answer: -7$ or down by 7$
Step-by-step explanation: Her account went down by 7 or x - 7.
Hope this helped!
Mark Brainliest if you want!
9,2.5,-4,-10.5,-17
Let's find the difference between two consecutive terms
2.5 - 9 = -6.5
-4 - 2.5 = -6.5
-10.5 - (-4) = -6.5
-17 -(-10.5) = -6.5
We can see that the common difference is -6.5
-6.5 is the common difference between successive terms in the sequence 9,2.5,-4,-10.5,-17
the common difference is negative because we subtract 6.5 to get the next term.
Answer:
Step-by-step explanation:
Since the square root of 3 can be re written as 3^-2 or 3^1/2, doing the same with the second factor will yield “3^1/2 • 3^1/5” thus, proceed to follow the Exponent Laws and you will have 3^1/2+1/5 which equals 3^5/10+2/10 which equals 3^7/10.
