Ramon bought two pullovers on a buy one, get one 30%-off offer. Each pullover had a list price of $20. How much did Ramon pay fo
2 answers:
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Answer:
Step-by-step explanation:
<u><em>The correct question is</em></u>
What value of b will cause the system to have an infinite number of solutions?
y = 6x – b
–3x + 1/2y = –3
we have
----->equation A
-----> equation B
we know that
If the system has infinite number of solutions then, the equation A must be equal to the equation B
so
isolate variable y in the equation B
Multiply by both sides
-------> new equation B
To find out the value of b, equate equation A and equation B
Step-by-step explanation:
By the formula of slope, we have
Answer: 0.701
Step-by-step explanation:
Formula : , where
significance level ,
Population standard deviation, n= sample size.
As per given, n= 22
Critical z- value for 90% confidence level :
Then,
Hence , error bound (EBM) of the confidence interval with a 90% confidence level= ± 0.701