Answer:
x=22
Step-by-step explanation:
5+x/2=16
x/2=16-5
x/2=11
x=11*2
x=22
Answer: option A is correct
Step-by-step explanation:
The Standard Deviation Rule states that for a normal distribution, nearly all of the data will fall within three standard deviations of the mean. It states that
68% of data falls within the first standard deviation from the mean.
95% fall within two standard deviations.
99.7% fall within three standard deviations.
Therefore, looking at the options, the true statement id
A) For a normal distribution, 99.7% of the distribution is within 3 standard deviations.
1st option im pretty sure
Answer:
The local train's journey time is 1.3 times as long as the journey time of the express train.
Step-by-step explanation:
Given that:
Travelling time of express train = 2 hours and 45 minutes
We will convert this time into minutes
Travelling time of express train = 2*60 + 45 = 120+45 = 165 minutes
Travelling time of local train = 3 hours and 40 minutes = 220 minutes
Let,
n be the number of times.
Local train travelling time = Number of times * Express train travelling time
220 = n * 165
Dividing both sides by 165
Hence,
The local train's journey time is 1.3 times as long as the journey time of the express train.
Answer:
D.) Not enough information
Step-by-step explanation:
The marks are the same, but they aren't placed in the same position in the triangles.