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
Step-by-step explanation:
66 1/2= 5ft. and 6 1/2in.
13x + 7x - 4x = -40
combine like terms o0n the left
16x = -40
divide both sides by 16
x = -5/2 or -2.5
I'm taking you at your word. I think these sentences are true
because you said them:
-- Samuel has read 3/6 of his assignment.
-- Judy has read 4/8 0f her assingment.
-- Their assignments were the same size.