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Marrrta [24]
3 years ago
5

Dave’s dog is one decade two years nine months three days old. Davis is half as old as his dog. How old is Dave?

Mathematics
1 answer:
Stells [14]3 years ago
8 0

Answer:

Dave is 6 years 4months 16 days 12 hours old

Step-by-step explanation:

Age of Dave Dog = 10year( 1 decade)+ 9 months+3 days

Age of Dave=

\frac{10year( 1 decade)+ 9 months+3 days}{2}

= 6 years 4months 16 days 12 hours

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3 years ago
State whether the following statements are true or false, and explain your reasoning.
Masja [62]

Answer:

Step-by-step explanation:

a) A square is a rectangle.   True

Reason: Property of Rectangle: (i) Opposite sides are equal and parallel. (ii) Each angle is 90 (iii) Diagonals are equal and bisect each other.

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b) A polygon with 21 sides has 432 possible diagonals. False

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= \frac{21*18}{2} = 189 diagonals

c) All three angles in an Isosceles triangle are equal. False

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d) The measures of the exterior angles of a nonagon, a nine-sided figure, have a sum of 360°. True.

Reason: The sum of measures of the exterior angles  of any polygon is 360

6 0
3 years ago
Read 2 more answers
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