Answer:
Step-by-step explanation:
I don’t get it too
You didn't include the graphs. However, I can describe the graph for you, so you can select the correct graph.
First, the car slows. So look for a line segment that is pointing down diagonally. Then, it maintains the speed. Look for a line that is horizontal. Finally, it slows down again to a stop. Look for a line segment that slants downward and touches the x axis.
The correct answer is: [B]: " IV, II, I, III " .
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Answer:
35
Step-by-step explanation:
At the beginning, the ratio number of girls : number of boys is
(1)
where
G is the number of girls
B is the number of boys
Later, seven more girls join the class, and two boys drop the class, so the new numbers of girls and boys are
and
We are also told that now the ratio is
Substituting the two equations above,
(2)
Also, from eq.(1) we can write
And substituting into (2) and re-arranging, we can find B:
And so
Therefore, the total number of students in the class BEFORE is
And so, after we have:
So the new number of students is