Answer:
A)
Step-by-step explanation:
Every element in a matrix has (r,c) for position,
where r is the row and c is the column
[tex] 3x+12-4x-16 \\ (3x-4x) + (12-16) \\ -x -4 \\ x+4 [tex]
Answer:
It will take 8 hours for Frank and Mary to get to the beach
Step-by-step explanation:
Step 1: Give expression for calculating
d=s×t
where;
d=distance traveled i miles
s=speed in miles per hour
t=time in hours
in our case;
d=520 miles
s=65 miles per hour
t=unknown
Step 2: Solve for the unknown, t
In order to solve for t, the expressions can be rearranged as follows ;
t=d/s
replacing values for d and s;
t=520/65
t=8 hours
It will take 8 hours for Frank and Mary to get to the beach