<h3><u><em>
Answer:</em></u></h3>
x = 15
<h3><u><em>Step-by-step explanation:\</em></u></h3>
Multiply both sides of the equation by 3
3 x 1/3 x X = 3 x 5
Simplify both sides of the equation.
Simplify 3 x 1/3 x X.
1 x X = 3 x 5
Multiply x by 1.
x = 3 x 5
Multiply 3 by 5.
and you get x = 15
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<h2><u>Hope it helps!</u></h2>
Answer:
look it up
Step-by-step explanation:
Answer:
And we can find this probability using the complement rule:
And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the lifetime of a certain type of battery of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability using the complement rule:
And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.
Step-by-step explanation:
here is the answer mark me as on Brainlist
ok so original perimeter = 12 +12 + 17 +17 = 58 mm
if dimensions are multiplied by 12:
12*12 = 144 and 17*12 = 204
new perimeter = 144 +144 +204 +204 = 696 mm
696 / 58 = 12
so the perimeter increased by a factor of 12, answer is A