Answer:
1:5
Step-by-step explanation:
He rode one mile in 5 minutes because 4/4 is 1 and 20/4 is 5
Answer: So they want you to find out the perimeter of the area!(8a so 8 times 2 is 16 times 3 is 48! Same-thing with the next one expect you divide 6 and 6 which is 1 and then since it says BY you multiple by 5. wich will give you 5.
Step-by-step explanation: Honestly i kind of explained it already! GOOD LUCK!!!!
Answer:
The expression f(0) represents the y-intercept on the graph of f(x). The y-intercept of a graph is the point where the graph crosses the y-axis.
Step-by-step explanation:
<u>HOPE</u><u> </u><u>IT</u><u> </u><u>HELPS</u><u> </u><u>❤</u>
Answer:
The researcher should use a sample size of at least 140 children to get a margin of error to be within 2%.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence interval 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
is the margin of error.
95% confidence interval
So 
, z is the value of Z that has a pvalue of 
, so 
.
We have that:
So
The researcher should use a sample size of at least 140 children to get a margin of error to be within 2%.
Answer:
y= -2x-6
Step-by-step explanation:
