Answer:
Both Tom and Jerry will apart 176 miles in 2 hours .
Step-by-step explanation:
Given as:
Tom and Jerry moves in opposite direction
The speed of Tom = 38 mph
The speed of Jerry = 50 mph
Let The distance cover by Tom = x mile
The distance cover by Tom = ( 176 - x ) miles
Time taken by both are same = T hour
Or, Time taken by Tom
T = 
... 1
∴ x = 38 T
And Time taken by Jerry
Or, T = 
So , put the value of T from 1
=
Or, 50 × x = ( 176 - x ) × 38
So 50 x + 38 x = 6688
Or, 88 x = 6688
∴ x = 
= 76 mile
So, From, eq 1
T =
or, T = 
= 2 hours
Hence both Tom and Jerry will apart 176 miles in 2 hours . Answer
Variance is the standard deviation squared but we're not going to use that now. Let's first calculate the mean:
mean = (17+13+13+22+11+20)/6 = 16.
Now for each value, let's see how far it is from this mean. We'll square these distances and average them. That's our variance.
17 distance 1 squared = 1
13 distance 3 squared = 9
13 distance 3 squared = 9
22 distance 6 squared = 36
11 distance 5 squared = 25
20 distance 4 squared = 16
Now average these outcomes:
variance = (1+9+9+36+25+16)/6 = 16.
So the variance by coincidence is the same as the mean.
Answer C is your answer.
The correct option is: B. 450
<u><em>Explanation</em></u>
Current value of the investment is 
dollars and 30 years ago, the value of the investment was 
dollars.
Suppose, the value of investment today is 
times greater than the value of the investment thirty years ago.
So, the equation will be........
Thus, the value of the investment today is 450 times greater than the value of the investment thirty years ago.
Answer:
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