C=-7/15 and x=2/5 c-4x write your answer in simplest form
1 answer:
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Answer:
And we can find the limits in order to consider values as significantly low and high like this:
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
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".
Solution to the problem
For this case we can consider a value to be significantly low if we have that the z score is lower or equal to - 2 and we can consider a value to be significantly high if its z score is higher tor equal to 2.
For this case we have the mean and the deviation given:
And we can find the limits in order to consider values as significantly low and high like this:
Answer:
A) 384
B) 576
Step-by-step explanation:
the area of a rhombus is
pq/2
<u><em>First Rhombus</em></u>
we have p but to find q we can cut the triangle in half to form a right triangle, that allows us to use the Pythagorean theorem
20² = 12² + b²
400 - 144 = b²
b² = 256
b = 16
since the height (b) is half the rhombus, we double it to get q
p = 24
q = 32
a =
a = 384
<u><em>Second Rhombus</em></u>
Since rhombuses are parallelograms, we can use its area formula (b)(h)
a = (24)(24)
a = 576