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Answer:
The correct option is A.
Step-by-step explanation:
Total number of students at the school is 2,500.
In the given pi chart Pink, Yellow and Sky Blue color represent the percentage of students that under reported, accurately reported, and over reported their heights respectively.
From the graph we can conclude that the yellow portion is approximately one fifth of whole circle. It means the number of students that accurately reported their height is one fifth of total number of students.
Therefore the number of students that accurately reported their height is 500. Option A is correct.
Answer:
c
Step-by-step explanation:
Answer:-10/13
Step-by-step explanation:
3x+4 = (2/5)x + 2
First move the 4 to the other side by subtracting it.
it becomes : 3x = (2/5)x - 2
then multiply everything by 5 to get rid of the fraction.
it becomes 15x = 2x -10
then move the 2x to the other side by subtracting it.
you get 13x = -10
now you can divide everything by 13 to isolate the x.
and you get x = -10/13
<span>A certain airplane has two independent alternators to provide electrical power. the probability that a given alternator will fail on a one-hour flight is 0.019.
This is a binomial probability situation, since it's "pass or fail." The prob. of failure is 0.019. Since the alternators are separate and independent, the prob. that two will fail is the product of 0.019 and 0.019, or 3.61 to the power -4 of 10. The latter can also be written as 0.000361.
The probability that one alternator will fail is 1-0.019, or 0.981.
The probability that neither alternator will fail is (0.981)^2=0.9624 (to four decimal place accuracy).
</span><span>What is the probability that at least one fails? This probability is equal to the complement of the probability that ONE will fail, which on the TI 84 Plus can be calculated as 1-binompdf(2,0.981,0), which comes out to 0.000361. </span>
