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3 years ago

For part A and B, the options are positive and negative.

Mathematics

2 answers:

ipn [44]3 years ago

6 0

Answer:

Coordinates: (2, -1)

Part A

X coordinate is positive

Y coordinate is negative

Part B

Coordinates after Y-axis reflection: (-2, -1)

X coordiate is negative

Y coordinate is negative

Good luck!

Firlakuza [10]3 years ago

5 0

Coordinates (2,1) happy learning

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schepotkina [342]

Answer:

The mean for the combined sample = 6.

Step-by-step explanation:

We have been given that one sample of n = 10 scores has a mean of M = 8.

So the sum of 10 scores for 1st sample will be: $10\times 8=80$

We are also told that second sample of n = 5 scores has a mean of M = 2.

So the sum of 5 scores for 2nd sample will be: $5\times 2=10$

When the both samples are combined, so total points will be: $80+10=90$ and total scores will be $10+5=15$ .

$\text {Mean for the combined sample}=\frac{\text{Total points of both data sets}}{\text{Total scores of both data sets}}$

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