Hakika
20.05.2020 •
Mathematics
Find two numbers whose sum is 24 and whose difference is 6.
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Ответ:
9 and 15
Step-by-step explanation:
Let the greater number be x and the smaller number be y.
x +y= 24 (1)
x -y= 6
x= y +6 (2)
Substitute (2) into (1):
y +6 +y= 24
2y +6= 24(simplify)
2y= 24 -6 (-6 on both sides)
2y= 18
y= 18 ÷2
y=9
Substitute y= 9 into (2):
x= 9 +6
x= 15
Thus the numbers are 9 and 15.
Ответ:
For this case we have that by definition the arc length is given by:
Where,
α: central angle r: radius of the circleThen, replacing values we have:
The length of the AC arc is given by: