This could get complicated. Please try to follow my steps carefully:
Begin by writing the equation to be solved: <u>12E - 4 = 0</u>
Add 4 to each side of the equation: 12E = 4
Divide each side by 12: E = 4/12 = 1/3 .
Answer:
is C maybe
Step-by-step explanation:
don't really know just picked
Answer:
d
Step-by-step explanation:
becuse the first one would be 4x and the other ones 2x
A: Suppose Mr. Moore decides to use 20 seventh graders as the sample. Is this sample a random sample? Explain your reasoning.
Ans: No, because he only chose the seventh graders which is invalid since he wants to have to use the mean height which involves the 6th, 7th and 8th graders.
B: Mr. Moore decides to use a random number generator to select 20 students from the school. Suppose that when choosing 20 students using the random generator on the graphing calculator, Mr. Moore’s sample is all eighth graders. Does that mean the sample is not a random sample? Explain your reasoning.
Ans: No, it is still a random sample. Since he is using a random generator, there is a possibility that the random generator would pick all students from the 8th grade. Unlike the first one, the random generator is not biased towards any grade, it is just a coincidence.
Answer:
9/2 or 4 1/2
Step-by-step explanation:
you do 1 1/2 times 3
3/2 times 3 equals
