Answer: 77.45 %
Step-by-step explanation:
We assume that the measurements are normally distributed.
Given : Mean :
Standard deviation :
Let x be the randomly selected measurement.
Now we calculate z score for the normal distribution as :-
For x = 35, we have
For x = 45, we have
Now, the p-value =
In percent ,
Hence, the percent of measurements should fall between 35 and 45 = 77.45 %
It is <span>B</span>. All u have to do is -2a/b which is 2 then plug 2 in and you get (2,1)
Answer:
138 packs
Step-by-step explanation:
Marcello thinks it better to have more water balloons on hand that he actually needs fo the water balloon fight, so he rounds up the number of balloons needed to 276 from 275.
Then he divides 276 by 2, obtaining 138. He needs to buy 138 packets of balloons. This way, he will have acquired the required 275 balloons plus 1 left over.
Let the angles be x and 90-x(since we are given that the angles are complementary so their sum will be 90)
now acc to question
x-(90-x)= 14
2x= 104
x= 52
and the other angle will be 90-x= 90-52 = 38
We know that Marcus spent 10 hours on his homework this week so:
10 hours = 100%
Marcus is saying that he spent 110% more time doing his homework this week, in comparison to last week.
Then to see if he is correct we have to find 110% of 10 hours.
So if: 100% of 10 hours = 10 hours
And: 10% of 10 hours (equivalent to 600 minutes) = 1 hour (or 60 minutes)
Then we add the two: 10 hours + 1 hour
And we get: 11 hours
As a result, Marcus is correct; he did spend 110% more time on his homework this week.
Hope this helps! :D