30% is 0.3 rational number
Try this solution; note, this way is not the shortest one.
Answer:
x=9
Step-by-step explanation:
All measurements of the interior angles equals up to 180 degrees when added together, therefore add them all together and set it equal to 180.
7x+2+4x+7+8x=180
-Combine like terms
19x+9=180
-Subtract 9 on both sides
19x=171
-Divide by 19
x=9
Answer:
-3x+4
Step-by-step explanation:
Answer:
So then the correct answer would be:
B) .9996
Step-by-step explanation:
The exact way to solve this problem is using the binomial distribution, assuming that our random variable of interest is "number of students living in apartments" represented by X and ![X \sim Bin(n=600, p =0.4)](https://tex.z-dn.net/?f=%20X%20%5Csim%20Bin%28n%3D600%2C%20p%20%3D0.4%29)
And we want this probability:
So we see that we satisfy the conditions and then we can apply the approximation.
If we appply the approximation the new mean and standard deviation are:
And then ![X \sim N (\mu = 240, \sigma= 12)](https://tex.z-dn.net/?f=%20X%20%5Csim%20N%20%28%5Cmu%20%3D%20240%2C%20%5Csigma%3D%2012%29)
And we are interested on the following probability:
So then the correct answer would be:
B) .9996