Can you please explain this problem for me 2 (-3+4)-3 (6÷-2)
1 answer:
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Answer:
- Mean score=120
Step-by-step explanation:
- Areas of a triangle add upto 180degrees (63+78+x=180) 141+x= (x=180-141) x=39
- Areas on a straight line add upto 180degrees
180-78=102
180-63=117
180-39=141
- 102+117+141=360
- Mean=360/3 =120
I'm assuming you need to evaluate/simplify the equation, so you need to isolate/get x by itself in the equation:
2(3x + 1) = 11 Divide by 2 on both sides
3x + 1 = [11/2 or 5.5] Subtract by 1 on both sides
[make the denominator the same to combine fractions]
3x = Divide by 3 on both sides
x =