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This is the formula for circumference of circle
Answer:
64.6 km/h
Step-by-step explanation:
18:14 = 18h 14'
1h = 60'
18h = 17h + 60'
18h14' = 17h + 60' ´14' = 17h 74'
then:
17h 74'
-17h 22'
= 0h 52'
the train travelled 56km at 52 minutes
56km/52minutes
1 hour = 60 minutes
52 minutes = 52/60 = 0.86667 hours
then:
56km/52minutes = 56km/0.86667hours
= 64.615 km/hours
It's a Quadratic that doesn't have any real roots as the parabola doesn't cross the x-axis.
For graphing:
If you're familiar with the parabola of y=x^2, then you could graph that but just translate it upwards by +4 on the y such that f(x)+4 will be equal to it.
If you aren't, then we know the y-intercept is 4, and that's also the point of the minimum point of the curve. If I were you, I'd write a table of some of the integer values:
x y
-2 8
-1 5
0 4
1 5
2 8
The value of y is the same for x and -x as anything squared is positive.This means that there is a line of symmetry in the y-axis.
This then makes it much easier to graph, simply place these points on the graph and make sure the curve is exponential. This means the gradient (steepness) gets greater the bigger the value of x.
Set up the long division.
<span>92|76912</span>
Calculate 769 ÷ 92, which is 8 with a remainder of 33.
<span>8<span>92|76912</span><span>736</span><span>33</span></span>
3 Bring down 1, so that 331 is large enough to be divided by 92.
<span>8<span>92|76912</span><span>736</span><span>331</span></span>
4 Calculate 331 ÷ 92, which is 3 with a remainder of 55.
<span><span>83</span><span>92|76912</span><span>736</span><span>331</span><span>276</span><span>55</span></span>
5 Bring down 2, so that 552 is large enough to be divided by 92.
<span><span>83</span><span>92|76912</span><span>736</span><span>331</span><span>276</span><span>552</span></span>
6 Calculate 552 ÷ 92, which is 6.
<span><span>836</span><span>92|76912</span><span>736</span><span>331</span><span>276</span><span>552</span><span>552</span></span>
7 Therefore, 76912 ÷ 92 = 836.
<span><span>836<span>836</span></span><span>
</span></span>
An integer is a whole number.
The answer isn't A, because 6/3=2 and 2 is a whole number.
The answer isn't C, because 6/2=3, and 3 is a whole number.
The answer therefore has to be B, because 3/6=1/2 and 1/2 isn't a whole number or an integer.
