Question

non questions.
6.An angle is greater than 45º Is its complementary angle greater than 45° or
equal to 45 or less than 45? bom
7 Find the mean of the first six even numbers.
8. If two angle are complementary then find the sum of their measures.
9. Verify a-(-b) = a+b for the given value a=21, b=8.
10. Verify the commutative property.
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Answer 1

Answer:

6:Let the angle be x

as it is complementary

x+45=90

Therfore x=45

7:We know first 6 even numbers are 2 ,4 ,6 ,8,10 and 12

and to find their mean

we have

mean=(2+4+6+8+10+12)/6

i.e mean=7

8:As they are complementary the sum will be 90 degree

9:a-(-b)=21-(-8)=29

a+b =21+8 =29

hence a-(-b)=a+b

10: a and b are any two whole numbers, then a + b = b + a.

In other words, the sum of two whole numbers remains the same even if the order of whole numbers (called addends) is changed.

Verification: In order to verify this property, let us consider some pairs of whole numbers and add them in two different orders. We find that the sum remains the same as shown below:

9 + 3 = 3 + 9