1/5 of 20 is 4.
2/5 of 20 is 8.
Therefore, Ron used 8 apples to make his pies.
Answer:
25.10% probability that the spending is between 46 and 49.56 dollars
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 spending is between 46 and 49.56 dollars?
This is the pvalue of Z when X = 49.56 subtracted by the pvalue of Z when X = 46. So
X = 49.56
has a pvalue of 0.6331
X = 46
has a pvalue of 0.3821
0.6331 - 0.3821 = 0.2510
25.10% probability that the spending is between 46 and 49.56 dollars
Answer:
262.5 minutes or 4.375 hours
Step-by-step explanation:
7/8=0.875
60 minutes=1 hours
5 is the amount Karen played
7/8 of 60 minutes will be 52.5 minutes since 0.875*60=52.5
52.5*5=262.5 minutes
262.5/60=4.375 hours
Answer:
=x2+7x−8
Step-by-step explanation:
x2+8x−x−8
=x2+8x+−x+−8
Combine Like Terms:
=x2+8x+−x+−8
=(x2)+(8x+−x)+(−8)
=x2+7x+−8
Your plane is 3x-y+4z=32 and you want to know when it crosses the z-axis or in other words intersects it. Along the z axis only z changes, additionally it goes through the origin (0,0,0).
So we can insert x=y=0 into the plane to calculate the point along the z-axis where it intersects the plane:
3x-y+4z=32
insert 0s:
4z=32
z=8
so the solution plane intersects the z-axis at (0,0,8)