Answer:
<h2><u><em>
4m -15</em></u></h2>
Step-by-step explanation:
simplify the expression 3(m - 5) + m
3 * (m - 5) + m =
3m - 15 + m
4m -15
Answer: 9 boys remained in the choir.
Step-by-step explanation:
Let x be the number of of boys and y be the number of girls.
In a school choir, 1/2(half) of the members were girls.
i.e (1)
At the end of the year, 3 boys left the choir, and the ratio of boys to girls became 3:4.
Put y= x from (1), we get
Thus , the number of boys : x= 12
Boys remained in the choir = 12-3=9
425-245= 180
To ascend means to move towards the surface, so you would subtract 245 from 425 to get 180. The depth of the submarine is now 180 ft.