Answer: 34
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Work Shown:
S = sum of the first 8 numbers
S/8 = 40 is the mean of those first 8 numbers
S = 8*40
S = 320 so the first 8 numbers add to this value
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R = sum of the 12 remaining values
R/12 = 30
R = 12*30
R = 360 is what the other 12 values add to
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R+S = 360+320 = 680 is what all twenty values add to. Divide this by 20 to get the overall average
(R+S)/20 = 680/20 = 34
Answer:
Step-by-step explanation:
tan55=8.9/x
x=8.9/tan55
x=6.2cm
Here you go! Hope this helps!
Answer:
-12m-6n
Step-by-step explanation:
Let's break this down systematically
Start:
8m + 2n - 4(5m - 2n)
Use the distributive property
8m + 2n - <u>4(5m - 2n)</u>
8m + 2n - 20m - 8n
Match like terms <em>m </em>and <em>n</em>
8m - 20m = -12m
2n - 8n = -6n
<u>-12m-6n</u>
Answer:
y-intercept = -8
Step-by-step explanation:
The y-intercept is where the line goes through the y axis. It is also the value when x = 0. From what the problem gives us, we know the y-intercept is -8 because the x value is 0
