b. 2/6, 3/9, 4/12
c.5/8, 3/4, 4/6
d. 3/5, 4/6, 2/8
The mean of 87, 93, 86, 90, and 84 is 88.
To find the mean of a set of numbers, you need to sum up all the numbers in the set and then divide by the total number of values. For this set, the sum is 87 + 93 + 86 + 90 + 84 = 440. There are 5 numbers in the set, so to find the mean, you divide the sum by 5: 440 ÷ 5 = 88.
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Option D: is the point of intersection of the two lines.
Explanation:
The two equations are and
We need to find the point of intersection of the two lines.
Thus, let us solve the equation by substitution method.
From the equation , we shall determine the value of y, by adding both sides of the equation by 6x.
Hence, we have,
Now, substituting in the equation , we get,
Substituting in the equation , we get,
Thus, the point of intersection of the two lines is
Therefore, Option D is the correct answer.