Answer:
77
Step-by-step explanation:
perimeter=150
lets name the length x
length=x
width=x-2
2[x±x-2]=150
2x±2x-4=150
4x=154
154÷4=77
x=77
Answer:
The probability that all the notes will be inserted into the correct envelopes is 1/6 or 0.166667.
Step-by-step explanation:
All the possible combinations are given by 3!=3x2x1=6. There are 6 possible ways in which the letters can be mailed. One of these ways is that the direction is correct. So the probability is 1/6=0.166667.
Answer:
42.22 (2 repeating)
Step-by-step explanation:
When you are given percentage problems, you deal with the percent (%), base (amount you are starting with), and the amount.
Starting with the most basic equation,
Percent * Base = Amount
In this problem, you are given the amount (38) and the percent (90)
So to find the base, you can do
Base = Amount / Percent
As always, convert the percent to a decimal by dividing by 100.
38/ 0.9 = 42.222 repeating
<h2>
Answer with explanation:</h2>
Given : Sample size : n = 36
Significance level for 90% confidence :
Sample mean :
Standard deviation :
By using standard normal table for t-values,
Critical t-value :
Thus, the correct value of t to construct a 90% confidence interval for the true mean percentage of cacao :
Confidence interval for population mean :
Hence, A is the correct answer .
Answer: please don't be ********* at me also the answer is c