B. -1.4
C. -4
D. 1/4
Answer:
A 4
Step-by-step explanation:
-1/-4 = 4
Answer: The polygons are congruent when they are the mirror image of each other. They are equal in shape and size. They have equal number of sides. All the corresponding sides and corresponding angles are equal. It is different from similar polygons which have same shape but not necessary to have same size.
b)work out the mean of the numbers in the list
The range of the numbers in the list is 20 and the mean of the numbers in the list is 17.14
To calculate the range of the numbers in the list, subtract the smallest number from the largest number:
Range = Largest number - Smallest number
Range = 32 - 12 = 20
To calculate the mean of the numbers in the list, add all the numbers and divide by the total number of numbers:
Mean = (12 + 13 + 19 + 16 + 32 + 15 + 13) / 7 = 120 / 7
Mean ≈ 17.14
Read more about mean at
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Lookattheattachedpicture
Hopeitwillbehelpfultoyou...
Answer:
Step-by-step explanation:
Given that the total number of sample pills is 200
ie., n=200
Let us assume it success if a pill is ineffective.
The probability of success in each trial is
∴ p=0.05
We know that the total probability is p+q=1
The probability of failure is q
q=1-p
q=1-0.05
∴ q=0.95
Let X be the random variable of the number of ineffective pills in a sample of 200 pills.
Hence X has Binomial distribution with parameter n=200 and p=0.05
The formula for Mean in Binomial distribution is
Substitute the values in the above formula we get
∴
The formula for Standard deviation in Binomial distribution is
Substitute the values in the above formula we get
∴
Now we have to find the probability that fewer than 10 in a sample of 200 pills will be ineffective.
That is to find the area to the left of x=9.5
The formula is
Substitute the values in the formula we get
∴
Now P(X<10)=P(Z<-0.16)
=0.4364
The probability that fewer than 10 out of 200 birth-control pills will be ineffective is approximately 0.817, or 81.7%.
Probability is a mathematical concept used to quantify the likelihood of an event occurring. It ranges from 0 (impossible) to 1 (certain). It plays a crucial role in statistics and decision-making, helping to predict outcomes, assess risk, and make informed choices. To find the probability that fewer than 10 in a sample of 200 birth-control pills will be ineffective, we can use the binomial probability formula:
P(X < 10) = Σ (n choose k) * p^k * (1-p)^(n-k), where:
n = sample size = 200,
k = number of ineffective pills,
p = probability of a pill being ineffective = 0.05.
Calculating this probability using the formula, we get:
P(X < 10) ≈ 0.817, or 81.7%.
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the set of even numbers from 0 to 10
10 billion
the set of integers
the null set
none of the above
B. You can only find an approximate volume of this figure.
C. Use the formula for the volume of a prismoid.
D. Divide it into solids whose volumes you can find.
Answer:
D
Step-by-step explanation:
Divide it into solids whose volumes you can find.
took the pennfoster test was correct