Answer:
Mean = 32.8
Step-by-step Explanation:
Mean is given as Mean = (Σfx)/Σf
First, find the mid-point, x, of each class, and multiply by the frequency (f) of the class to get fx:
Class ==> f ==> x ==> fx
0-10 => 3 => 5 => 15
10-20 => 8 => 15 => 120
20-30 => 10 => 25 => 250
30-40 => 15 => 35 => 525
40-50 => 7 => 45 => 315
50-60 => 4 => 55 => 220
60-70 => 3 => 65 => 195
Sum the fx of all classes together to get Σfx:
Σfx = 15 + 120 + 250 + 525 + 315 + 220 + 195 = 1,640
Σf = 3 + 8 + 10 + 15 + 7 + 4 + 3 = 50
(Σfx)/Σf =
(Σfx)/Σf =
Mean = 32.8
I want to say B) 1538.6 cm3
Answer:
Step-by-step explanation:
First find the slope of the line that passes through the points (-5,0) and (-1, -8). Notice how x increases 4 units from -5 to -1 and y decreases 8 units.
Thus, the slope of this line is m = rise / run = -8/4, or m = -2.
Another way to look at this:
change in y - 8 - 0
m = -------------------- = ------------ = -2
change in x -1 - (-5)
Please note: m=-1 - (-5) = 45
8 = -2 is not correct; 8 cannot equal -2.
Answer:
Answers below
Step-by-step explanation:
1. 77,915.06
A=2*50( this is a subscript 50)+(50+50+50)505
2. 5.47×105 or 547,000
3. 211045.04
I'm pretty confident that these are all correct but double check them first.
Answer:
yes
Step-by-step explanation:
congurency property can be used for all right angles triangles
that's all ....have fun