Answer:
9
Step-by-step explanation:
<em>Degrees of freedom</em> is the number of values in the final calculation of a statistic that are free to vary. Degrees of freedom are related to sample size and calculated by n-1 where n is the <em>sample size</em>.
The Supervisor selects 10 teddy bears as sample from 5000 teddy bears produced daily. Therefore in this situation, there are 10-1=9 degrees of freedom
Pi = 3. Area of a circle = pi×r squared.
R is radius, and the radius of that circle is 11 m. therefore, 3.14×11 squared will give you your answer. Don't forget, exponent before multiplication
11^2 = 121
121×3 = 363 That's the area of the big circle.
Now, 11÷2 gives you the radius of the small circles. you get 4.5
4.5^2 = 20.25
20.25*3 = 60.75
That's the area of ONE small circle. double it and you have the area of 2.
60.75×2= 121.5
Now just subtract the area of the small ones from the area of the big one to find the area of the shaded region.
363-121.5= 241.5
Now, you're done!
Answer: D. Effects of UV rays on eyesight
Step-by-step explanation:
The whole point of this study is to find the effects of people either with wearing or not wearing sunglasses for 10 weeks and being exposed to UV rays.
<span>Find Slope:
-x + 2 = y
</span><span>y = -x + 2
</span>⇒ Slope = -1
⇒ Slope of the perpendicular line = 1
Find y-intercept:
At point (-1.5 , 3.5)
3.5 = -1.5 + b
b = 3.5 + 1.5
b = 5
Equation: y = x + 5
<h2>
Explanation:</h2>
A Perfect-Square Trinomials are quadratics that result after squaring binomials. So these Perfect-square trinomials are given in the form:
Whose Squared-Binomial Form is:
In this exercise, we have the variable 
, so changing 
it is true that:
Therefore, for our given expression we have:
So our goal is to complete this expression:
Step 1. First of all, we need to square our variable w. therefore:
Step 2. Here 
Step 3. Let's find b:
Finally, our complete expression is:
<h2>Learn more:</h2>
Factors of polynomials: brainly.com/question/1554148
#LearnWithBrainly
