Someone pls help, pls pick brainliest.
2 answers:
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Answer:
Red: Left side equation
Blue: Right side equation
2x+7=2(x-1)
2x+7=2x-2
2x-2x=-2-7
0x=-9= 0 No solution
Step-by-step explanation:
Use Desmos graphing calculator if u need help with graphs
Answer:
a)
D. 9.74
b)
B. 74
Step-by-step explanation:
Part a
We have the following dataset given:
69 74 75 62 70 93 64 69 61 88 67 77 87 90 66 91 77 63 82 82 71 74 76 65 83
We can begin calculating the sample mean with the following formula:
And replacing we got:
Now we can calculate the sample deviation with the following formula:
And after replace we got:
Part b
For this case we need to sort the value on increasing way:
[1] 61 62 63 64 65 66 67 69 69 70 71 74 74 75 76 77 77 82 82 83 87 88 90 91 93
And the median would be the value in the position 13 and we got: