Answer:
20in
Step-by-step explanation:
Answer:
x = 4 or x = -4 is your answer
X + 19 >= 8.2
x >= 8.2 -19
>= -10.8
Answer:
12.66 
Step-by-step explanation:
Given the dimensions of the room are
=
and
=
.
The area of the room =
Area=
Area=72.33 
The area of the carpet=85 
The area of carpet left= Total area of carpet - the area of the room
The area of carpet left= 85-72.33=12.66 
3x92 = 276 (first 3 exams)
average of at least 90 (90 x 4 = 360)
360 - 276 = 84
Answer
<span>she needs to score at least 84 on the fourth exam </span><span>in order to guarantee a final average of at least 90</span>