Answer:
895.9 feet
Step-by-step explanation:
Answer:
Which Expressions?
Step-by-step explanation:
Answer:
a is the answer
Step-by-step explanation:
Answer: 65
Step-by-step explanation:
Since the mean mark of the 9 students is 50. Their total marks will be:
= 9 × 50
= 450
Since the marks obtained by 8 students are given, we add the marks together and this will be:
= 60+40+50+30+80+40+45+40
= 385
The score of the 9th student will be:
= 450 - 385
= 65
To solve this let us try to get x on it's own in the inequality.
-6<3x-12<=9
6<3x<=21
2<x<=7
Now a filled dot indicates <= or >= and empty indicates < or > so we know that the answer must have a filled dot on 7 and an empty dot on 2, with a line in between.
The answer is B, the selected one.
