Answer:
You would do this problem like a normal varible problem. x=10
Step-by-step explanation:
Since 9x is a right angle the inside would also be 9x
9x+4x+10+40=180
180 because that is how much a triangle equals
combine like terms
13x+50=180
subtract 50 from both sides
13x=130
divide by 13
x=10
<u>Hope this helps!</u>
Answer:
The last option
Step-by-step explanation:
It can't be 100 added to any, as that would make y greater than x when it is not. And, 35x and 3.5x would be too much.
y = 0.35x + 1.5
y = 0.35(100) +1.5
y = 35 + 1.5
y = 36.5
x = 100, y = 36.5 Which is the first set when x is not 0
Answer:
a) 
=4.63 md=4.55 mo= 1.9 b) Sample Standard Deviation≈ 2.58 Coefficient of Variation=55.72% Sample Range=6.9
Step-by-step explanation:
a)
<u>Mean</u>
For the <u>Median</u>, we have to order the entries. So, ordering it goes:
1.9 1.9 2.3 3.9 5.2 5.7 7.3 8.8
Since we have even entries 
mode
The mode for this data 1.9 1.9 2.3 3.9 5.2 5.7 7.3 8.8 is 1.9
b)
<u>Sample Standard Deviation</u>
Here it is the formula to calculate it:
<u>Coefficient of Variation</u>
CV is the quocient between sample Standard deviation over Mean and it is used to make comparisons.
<u>Range</u>
The difference between the highest and the lowest value of this sample
8.8-1.9=6.9
Thats easy.......... 2 1/6
Well, 7% of 450 is 31.5. The error can go either way (too much or too little) so 450 - 31.5 = 418.5. We also do 450 + 31.5 = 481.5. The statement would be
Book mass = >418.5 and <481.5.
(This could be wrong, I haven't done this much before.)
