Answer: it's c
Step-by-step explanation:The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
56+21+55+30+33/5=39
<h3>
Answer: Choice C. (-x, -y)</h3>
Explanation:
Focus on one point, such as A = (1,2). Note how it moves to point A ' = (-1, -2). Both x and y coordinates have been flipped from positive to negative. The rule therefore is . This describes a 180 degree rotation (either clockwise or counterclockwise, it doesn't matter). Points B and C follow the same idea.
Side note: Lines AA', BB' and CC' all go through the origin (0,0).
Option B 6x-7y = -11 is correct
Step-by-step explanation:
We need to write the equation of the given line in standard form.
The points are (1/2,2) and (3,1)
The equation used is:
where m is the slope.
Finding slope :
x₁= 1/2, y₁=2, x₂=-3, y₂=-1
Putting values:
Now taking point (1/2,2) and s;ope m = 6/7 finding equation:
So, Option B 6x-7y=-11 is correct
Keywords: Standard form of equation
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Answer:
11g - 40
Step-by-step explanation:
A Windows should be the correct answer