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
Answer:
14.88x + 8.88y
Step-by-step explanation:
Just multiply the numbers:
14.88x + 8.88y
Answer:
a
Step-by-step explanation:
(3x-14)+9x=90, thus,
((3x-14)+9x)+90=180
90+90=180
Answer:
Help with what... there is no question
Answer:
y- intercept = - 6
Step-by-step explanation:
The y- intercept is where the graph crosses the y- axis.
Let x = 0 and substitute in to the equation, that is
y = 0² - 3(0) - 6 = 0 - 0 - 6 = - 6 ← y- intercept
