Answer:
X = 7
Y = 2
Step-by-step explanation:
Y-2x=3
Y-5x=-3
X=7
Y=2
Its 34
Because it shoukd equal 180 so when you do 101+45= 146 then you subtract 180-146= 34
Less than: 3/8, 1/2
The same: 8/12
Greater than: 4/5, 6/6, 9/10
(I think this is what the question was? you typed it in a very jumbled fashion)
You don't even have to look up the definition of 'standard deviation'. You only
have to remember that 'smaller standard deviation' means 'less spread-out'.
First, let's find the mean (average). It's not supposed to change:
1/7th of (65 + 71 + 77 + 80 + 82 + 90 + 96) = 561/7 = <u>80 and 1/7</u> .
Now, just pick 7 scores that total 561 and are all bunched up.
The easiest way would be 80, 80, 80, 80, 80, 80, 81 .
But that's so easy that it feels like cheating.
Let's say <u>77, 78, 79, 80, 81, 82, and 84</u> .