Solve: 5x - 3(x - 2) = 8
1 answer:
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The complete question in the attached figure
we have that
<span>A door to a playhouse is 50 inches tall
we know that
1 in---------------> is 0.0833333 ft
so
50 in-------------> 50*0.0833333---------> 4.167 ft
</span>4.167 ft----------> [4 ft+0.167 ft]
<span>remember that
</span>1 in---------------> is 0.0833333 ft
<span>X in----------------> 0.167 ft
X=0.167/0.0833333----------> X=2 in
therefore
</span>4.167 ft----------> [4 ft+0.167 ft]--------> [4 ft+2 in]<span>
the answer is
the option b) 4 ft 2 in
</span>
we have that
<span>A door to a playhouse is 50 inches tall
we know that
1 in---------------> is 0.0833333 ft
so
50 in-------------> 50*0.0833333---------> 4.167 ft
</span>4.167 ft----------> [4 ft+0.167 ft]
<span>remember that
</span>1 in---------------> is 0.0833333 ft
<span>X in----------------> 0.167 ft
X=0.167/0.0833333----------> X=2 in
therefore
</span>4.167 ft----------> [4 ft+0.167 ft]--------> [4 ft+2 in]<span>
the answer is
the option b) 4 ft 2 in
</span>
Answer:
0.7422 = 74.22% of scores are above 74.
Step-by-step explanation:
Problems of normally distributed samples can be 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:
Calculate the proportion of scores above 74.
This is 1 subtracted by the pvalue of Z when X = 74. So
has a pvalue of 0.2578
So 1-0.2578 = 0.7422 = 74.22% of scores are above 74.