37: Is a parallelagram
38 Is Not
39: Is
To evaluate the given probability we proceed as follows:
The z-score is given by:
z=(x-μ)/σ
where:
μ-mean
σ-standard deviation
from the question:
mean=272, sig=15
but the sample is n=36, thus we shall have:
√σ/n
=15/√36
=2.5
thus the z-score will be as follows:
x=272
z=(272-272)/2.5=0
x=274
z=(274-272)/2.5==0.8
thus
P(272<x<274)
=P(z<0.8)-P(z<0)
=0.7881-0.5
=0.2881
Hence the answer is 0.2881
Answer:
20+0.50x
20 dollar fee, 0.50 per text, x represents an unknown number
Step-by-step explanation:
Hey there!
To solve for the solutions of your inequality, divide both sides of your inequality by -3 in order to isolate the value of x:
-3x≥36
÷-3 ÷-3
x≤12
**Note: in inequalities, if you ever divide or multiply a number that is negative, you must flip the inequality sign. In this case, because you have divided -3 from both sides, you must flip the inequality sign from ≥ to ≤.
Therefore, your solutions to your inequality would be x≤12.
Hope this helps, and have a nice day! :)
