Step
1 answer:
Answer:
C
Step 4
Step-by-step explanation:
The given steps and justifications are:
Given
Step 2
Distributive property of multiplication over addition
Step 3
Commutative property of multiplication
<em>This justification is not correct. </em>
<em>This justification is not correct. This is rather the inverse property</em>
<em>This justification is not correct. This is rather the inverse propertyTherefore step 3 has an incorrect justification.</em>
Step 4: 11x−40=10x+45
Associative property of addition
Step 5: x−40=45
Subtraction property of equality
Step 6: x=85
Addition property of equality
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Answer:
<em>The probability of obtaining a score less than 60 is 2.28% </em>
<em>It happens 2 out of 100 times.</em>
Step-by-step explanation:
If the mean μ = 80 and the standard deviation σ = 10, then we need to find the probability that an X value is less than 60.
Then we find
To find this probability we use the Z statistic.
This is the same as
We look for this value in the table for the normal distribution of right queue and we have:
<em>The probability of obtaining a score less than 60 is 2.28% </em>
<em>It happens 2 out of 100 times.</em>
Answer:
$38.57
Step-by-step explanation:
Make a proportion.
Cross multiply.
27 times 100 = 2700
2700 divided by 70 = 38.57142857
Round the result to the hundredths place.
38.57142857 ≈ 38.57
**Hope this helps!