Answer:
25
Step-by-step explanation:
first we add 2 and5
2+5=7
when the digits are interchange the no. becomes 52
52 is greater than the original no. by 27
therefore the answer is said to be 52-27
And 52-27=25
Answer:

Step-by-step explanation:
Step 1: Identity the radius.
Since O is the center of the circle, and C and E lie on the circumference, OC and OE are the radii of the circle and thus,
OC=OE.
Step 2: Consider the rectangle.
All diagonals in a rectangle are congruent so this means
DB= OC ( OC is also a diagonal).
Thus, OC= 10 units.
Step 3: Analyze
So this means OE is also 10 units as well.
Since we know the length of the radius, Use the area of circle,


So the area of a circle is 100 pi.
Answer:
Standard deviation gets smaller
Step-by-step explanation:
No. of students = 45
The class had an average of 56 words per minute (WPM) with a standard deviation of 7 WPM.

The teacher realized that the data from one student who typed 55 WPM was not entered.
So, new sum = 2520+55
New sum =2575
So, new mean =
New mean =57.22
Standard deviation is the measure of distance between observation and mean
So, if number gets closer to mean , Standard deviation gets smaller . if the numbers get bigger , Standard deviation gets bigger.
Since 55 is closer to 57.22
So, Standard deviation gets smaller
It would be 10 to the right when you add from 0
Earnings For The First Job
monthly pay =262 × 4
= 1048
Yearly pay = 1048 × 12
= 12 576
Earnings for the second job
yearly pay = 16 200
Difference for the two jobs
16200 - 12576 = 3624
Answer = The second job that pays $16200 has a better from the first job by 3624