haydenbq
29.10.2019 •
Mathematics
What is 3.25 repeating, when only the 5 is repeating, as a fraction?
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Ответ:
Here, we need a number in fraction, that when we solve it gives 3.25 and repeating 5 so, It would be: 1932/594
Method of finding other numbers:
1) Take any natural number of your choice and multiply it by 3.25
2) Now, Try to add some small number like 1 or 2 or maybe in decimal like 0.3, 0.7 anything.
3) In that way,we adjust the situation so, it comes as an Irrational number.
Hope this helps!
Ответ:
3.25 repeating as a fraction = 322/99
Steps to solve
1) Make an equation
2) Find # of repeating digits
3) Multiply
4) Subtract
5) Solve
Ответ:
12,5°
Step-by-step explanation:
ΔABC has: ∠BAC + ∠ABC + ∠ACB = 180°
=> 60° + 35° + ∠BAC = 180°
=> ∠BAC = 180°- 60° - 35° = 85°
AE is the angle bisector of ∠BAC
=> ∠BAE = ∠CAE = ∠BAC/2 = 85°/2 = 42,5°
AD⊥BC => ΔADB is the right triangle at D
=> ∠ABD + ∠BAD = 90°
=> ∠BAD = 90° - ∠ABD = 90° - 60° = 30°
but ∠BAE = ∠BAD + ∠DAE = 42,5°
=> ∠DAE = 42,5° - 30° = 12,5°