A wool sweater originally costs $42.00. if the sweater is on sale for 25% off, what is the new cost of the sweater? $
2 answers:
Answer:
New cost of the sweater is $ 31.5 .
Step-by-step explanation:
As given
A wool sweater originally costs $42.00.
If the sweater is on sale for 25% off .
25% is written in the decimal form
= 0.25
Thus
off on a wool sweater = 0.25 × Originally costs of a wool sweater
= 0.25 × $42
= $ 10.5
Thus
New cost of the sweater = Originally costs of a wool sweater - off on a wool sweater.
Put all the values in the above
New cost of the sweater = $42 - $10.5
= $ 31.5
Therefore new cost of the sweater is $ 31.5 .
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The answer is C.
Hope this helps.
Answer:
The point estimate for population mean is 8.129 Mpa.
Step-by-step explanation:
We are given the following in the question:
Data on flexural strength(MPa) for concrete beams of a certain type:
11.8, 7.7, 6.5, 6.8, 9.7, 6.8, 7.3, 7.9, 9.7, 8.7, 8.1, 8.5, 6.3, 7.0, 7.3, 7.4, 5.3, 9.0, 8.1, 11.3, 6.3, 7.2, 7.7, 7.8, 11.6, 10.7, 7.0
a) Point estimate of the mean value of strength for the conceptual population of all beams manufactured
We use the sample mean, as the point estimate for population mean.
Formula:
Thus, the point estimate for population mean is 8.129 Mpa.