Answer:
Step-by-step explanation:
y ∝ x^2
Introducing the proportionality constant, we have
y = kx^2
Given : y= 18 when x = 3
substitute the given values in order to get the constant
i.e 18 = k x 3^2
18 = 9k
k = 2
therefore the formula connecting x and y
⇒ y = 2x^2
To find y if x is 4, just substitute x = 4 into the formula connecting x and y
i.e y = 2 x 4^2
= 2 x 16
= 32
The formula for percent error is the absolute vale of: theoretical-experimental and the result of that divided by the theoretical so it is 120-94=26 and divide that by 120 and it is .216 so round up to .22 and then multiply by 100 which is 22 so 22%
(I think)
Answer:
wow um 20,999,999
Step-by-step explanation:
I dont think all of they are REAL friends
The answer will be Mean = 135 Variance = 62 and Standard Deviation = 8
<h3>What is the standard deviation? </h3>
Standard deviation is defined as the amount of variation or the deviation of the numbers from each other.
Given that :
Proportion (p) = 54%
Sample size (n) = 250
Using Normal approximation :
Mean = np
Mean = 250 * 0.54 = 135
Variance = npq ; q = 1 - p = 1 - 0.54 = 0.46
Variance = (250 * 0.54 * 0.46) = 62.1 = 62
Standard deviation = √variance = √62.1
Standard deviation = 7.8803553 = 8
To know more about standard deviation follow
brainly.com/question/475676
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Answer:
1200 cm
Step-by-step explanation:
triangle = 1/2bh
1/2(50)20= 500
1/2 (50) 20= 500
1/2(10)20 = 100
1/2 (10)20= 100
then you add them all which gives you 1200
