You have to add on to zeros to the number 2 and because there is a decimal point, that counts as a zero added. the stages:
2.2
22
220
your answer is 220 cm
4
37x=9x+4
STEPS TO SOLVE
1
Subtract
9
x
9x from both sides of the equation
37
x
=
9
x
+
4
37x=9x+4
37
x
−
9
x
=
9
x
+
4
−
9
x
37x−9x=9x+4−9x
2
Simplify
Combine like terms
37
x
−
9
x
=
9
x
+
4
−
9
x
37x−9x=9x+4−9x
28
x
=
9
x
+
4
−
9
x
28x=9x+4−9x
Combine like terms
28
x
=
4
28x=4
3
Divide both sides of the equation by the same factor
28
x
=
4
28x=4
28
x
28
=
4
28
28
28x
=
28
4
4
Simplify
Simplify fraction
28
x
28
=
4
28
28
28x
=
28
4
x
=
4
28
x=
28
4
Divide the numbers
x
=
1
7
x=
7
1
SOLUTION
Answer:
The probability that the sample proportion is more than 0.35 believe movie trailers reveal too much is 0.1539.
Step-by-step explanation:
According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.
The mean of this sampling distribution of sample proportion is:
![\mu_{\hat p}=p](https://tex.z-dn.net/?f=%5Cmu_%7B%5Chat%20p%7D%3Dp)
The standard deviation of this sampling distribution of sample proportion is:
![\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}](https://tex.z-dn.net/?f=%5Csigma_%7B%5Chat%20p%7D%3D%5Csqrt%7B%5Cfrac%7Bp%281-p%29%7D%7Bn%7D%7D)
The information provided is:
<em>p</em> = 0.32
<em>n</em> = 250
Since the sample size is quite large, i.e. <em>n</em> = 250 > 30, the central limit theorem can be used to approximate the sampling distribution of sample proportion by a Normal distribution.
Compute the probability that the sample proportion is more than 0.35 believe movie trailers reveal too much as follows:
![P(\hat p>0.35)=P(\frac{\hat p-\mu_{\hat p}}{\sigma_{\hat p}}>\frac{0.35-0.32}{\sqrt{\frac{0.32(1-0.32)}{250}}})](https://tex.z-dn.net/?f=P%28%5Chat%20p%3E0.35%29%3DP%28%5Cfrac%7B%5Chat%20p-%5Cmu_%7B%5Chat%20p%7D%7D%7B%5Csigma_%7B%5Chat%20p%7D%7D%3E%5Cfrac%7B0.35-0.32%7D%7B%5Csqrt%7B%5Cfrac%7B0.32%281-0.32%29%7D%7B250%7D%7D%7D%29)
![=P(Z>1.02)\\=1-P(Z](https://tex.z-dn.net/?f=%3DP%28Z%3E1.02%29%5C%5C%3D1-P%28Z%3C1.02%29%5C%5C%3D1-0.84614%5C%5C%3D0.15386%5C%5C%5Capprox%200.1539)
Thus, the probability that the sample proportion is more than 0.35 believe movie trailers reveal too much is 0.1539.
14 multiplied by 9 is 126
The answer is 126ft
Answer:
The answer is 600 minutes (10 hours)
Step-by-step explanation:
20 minutes = 1 student.
30 students x 20 = 600 minutes
600mins / 60 (because an hour has 60 mins) = 10 hours.