All of the above options are true, so the answer is choice D.
Z-score for 30 = (30 - 25) / 5.8 = 0.8621
z-score for 20 = (20 - 25) / 5.8 = -0.8621
:
Note find probabilities from z-tables
:
Probability ( 20 < X < 30 ) = 0.8051 - 0.1949 = 0.6102
Answer:
Step-by-step explanation:
The appropriate trig identity is ...
Here, you have a scale factor of 6 and a=3θ, b=θ. Filling in these values gives ...
Answer: No, it is not a solution
Work Shown:
-2 ≤ k/3
-2 ≤ -9/3
-2 ≤ -3
The last inequality is false because -3 should be smaller than -2 (not the other way around). Use a number line to help see this.
Since the last inequality is false, the original inequality must also be false for that particular k value. Therefore, k = -9 is not a solution.
2/80 is equivalent
you can also just multiply the numerator and denominator to find out what else is equivalent.
