You have to find out what can go into both five can go into both so 10÷5 is two and 25÷5 is five so the answer is 2/5
Answer:
43 messages
Step-by-step explanation:
Given:
146 messages = $21.90
x messages = $6.45
Finding x by cross-multiplication:
x = 146*6.45/21.90 = 43
Hope this helps! :)
The sample size, n required to produce a margin of error, M, in a probability proportion distribution is given by:

The above formular shows that the sample size is inversely proportional to the Margin of error.
Then we have:

where k is some constant.
Now suppose we decrease M by a factor of 3,


Therefore, if we decrease the Margin of error by a factor of 3, we need to increase the sample size by a factor of 9.
Me not good on math matics I sorry hybrid
Answer:
A. (-2,-4)
Step-by-step explanation:
If CR:RB is 2:3, and C is (-4,-7), then R is (-2,-7)
You can stop here because only A has the x value as -2.
If you want to look at the y value also, -4 is 2/5 of the way between -2 and -7, which has the same 2:3 proportion.