Answer: 6 and 9, 7 and 8. 69, 78, 87, 96. So, there are only 4 combinations which would result in 15.
Step-by-step explanation:
Therefore the average sum of three numbers is 45:3=15. The number 15 is called the magic number of the 3x3 square. You can also achieve 15, if you add the middle number 5 three times. The odd numbers 1,3,7, and 9 occur twice in the reductions, the even numbers 2,4,6,8 three times and the number 5 once.
Answer:
21≤X<28
Or
X≥21+X<28
Step-by-step explanation:
Both equations mean the same thing
Answer:
d.
I and IV only.
Step-by-step explanation:
Seventy-five degrees is the answer.
Let the second angle be x.
Second angle = x
First angle = 3x - 6
The sum of the two angles is 180°
x + 3x - 6 = 180
4x - 6 = 180
4x = 186
x = 186 ÷ 4 = 46.5°
Second angle = 46.5°
First angle = 3(46.5) - 6 = 133.5°
Answer: The angles are 46.5° and 133.5°
