Factor the trinomial: 5x^2+42x+49
1 answer:
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Answer:
a. 24.5 $
b. 10.5 $
c. 7/10
Step-by-step explanation:
Given the original price of the sweater is: $ 35.
a) If you pay only of the price, then the actual amount paid is:
= 24.5 $.
b) Total amount Saved = Actual price - Price you paid
Total Amount Saved =
= 10.5 $.
c) Fraction of the original price saved = Total amount Spent/Actual Price
Total amount Saved =
=
Answer:
A sample size of at least 737 specimens is required.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the width M as such
In which is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:
So:
A sample size of at least 737 specimens is required.