Answer:
0.906
Step-by-step explanation:
Red marbles = 6
Blue marbles = 10
White marbles = 11
8 random marbles are picked out
Probability of:
Red marbles = 2/6 = 1/3
Blue marbles = 3/10
White marbles = 3/11
2/6 + 3/10 = 6x5=30 and 10x3=30
5x2 = 10
10/30
3x3 = 9
9/30
10/30 + 9/30 = 19/30
19/30 + 3/11 = 299/330
299/330 as a decimal is 0.90606
Answer:
The angle from the centre of Ann's slice is 60 degrees.
Step-by-step explanation:
If the size of the slices is proportional to the ages of the children eating the cake, then the sum of their ages equal to 360 degrees (since the cake is a circle).
So to work out the angle of Ann's portion, we find a fraction for Ann's age over the total of all of their ages. So:
5/(5 + 10 + 15) = 5/30
Now since we know their ages are proportional to the slices of cake, we can find the same value for the fraction 5/30 that is out of 360 to work out the angle. Let's call the angle representing Ann's slice x. So know we can create an equation:
5/30 = x/ 360
5/30 * 360 = x
x = 60
Answer:
I believe the answer is 9
Answer:
This is important because, the first few numbers might seem to follow a pattern but subsequent numbers might reveal a change in the rule.
Step-by-step explanation:
When studying patterns it is important to evaluate all the figures holistically instead of drawing conclusions based on just the first few numbers because there might be a change in what we felt was obvious on close observance of all the numbers. For example, observe the pattern;
2,4,6, 10, 14, 18, 20, 22, 24
The first two numbers show the addition of two. If a person decides to add 2 to all the figures, he would be wrong because after the first three figures, he would have to add 4 to the numbers.
