Anja is substituting t=5 and t=9 to determine if the two expressions are equivalent. 4(2t-5) 10t-38 Which statement is true?
2 answers:
Answer:
Correct option is C
Step-by-step explanation:
Given the two expression
and
Anja is substituting t=5 and t=9 to determine if the two expressions are equivalent. we have to choose the correct statement.
First exp: 4(2t-5)
Substitute
t=5: 4(2(5)-5)=4(10-5)=20
t=9: 4(2(9)-5)=4(18-5)=4(13)=52
Second exp: 10t-38
t=5: 10(5)-38=50-38=12
t=9: 10(9)-38=52
Both expressions are equivalent when t=9, but the two expressions are not equivalent.
Hence, correct option is C
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Answer:
9.18% probability the miners find more than 16 ounces of gold in the next 1000 tons of dirt excavated
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What is the probability the miners find more than 16 ounces of gold in the next 1000 tons of dirt excavated?
This is 1 subtracted by the pvalue of Z when X = 16. So
has a pvalue of 0.9082
1 - 0.9082 = 0.0918
9.18% probability the miners find more than 16 ounces of gold in the next 1000 tons of dirt excavated
Answer:
Step-by-step explanation:
We need to add the two terms.
Solving,
Combine the like terms and adding those terms
So, the answer is: