The sum of numbers or expression involves adding the expressions and the numbers together.
Assume that the sum of the degrees is given as:

The above sum can be rewritten as:

Take the sum of all the numbers (including -2 in bracket)

If the sum of the degrees is given as
, then the number of years he worked would be 6
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Answer:
angle CBE=15 degrees
Step-by-step explanation:
angle ECD is 60 degrees and EC=CD because equilateral triangle
angle DCB is 90 degrees and CB=CD because square
angle ECD +angle DCB= angle ECB
60+90=150=angle ECB
since triangle ECB has legs EC and CB equal in length, then it is an isosceles triangle.
so angles CBB and CBE are equal
angle CBE=(180-150)/2
angle CBE=15 degrees
First multiply the original price by the discount. (250.99 x .78 = 195.7722)
Then subtract that number from the original. (259.99 - 195.7722 = 55.2178)
Then round to 2 decimals because dealing with money.
Answer: $55.22
25mm is the same as 2.5cm.
12+2
14
0.5+0.5
1
14+1
15
12 1/2cm + 25mm = 15cm
The median would be 13.5 because that's the middle of all the numbers lined up from smallest to largest and the mean would be 12.7 because that's all the numbers added up divided by how many numbers there are