Which must be true of a quadratic function whose vertex is the same as its y-intercept?
2 answers:
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Step-by-step explanation:
selling price of 1 kg oranges = rupees 80
so, selling price of 50 kg oranges :-
=》80 × 50
=》4000
now, profit = 800
so, Cost price (C.P) = selling price - profit
=》C.P = 4000 - 800
=》C.P = 3200
SO, purchasing rate per kg was
=》3200 ÷ 50 = 64
hence, purchasing rate = 64 rupees per kg
profit % =
=》
=》
=》
hence, profit % = 25%
Answer:
4.75% probability that the battery will last more than 9 hours before running out of power
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 that the battery will last more than 9 hours before running out of power g
This is 1 subtracted by the pvalue of Z when X = 9. So
has a pvalue of 0.9525
1 - 0.9525 = 0.0475
4.75% probability that the battery will last more than 9 hours before running out of power