Answer:
n = 9
Step-by-step explanation:
7n + 5 = 68
7n + 5 - 5 = 68 - 5
7n = 63
7n / 7 = 63 / 7
n = 9
Answer:
No, it is incorrect.
Step-by-step explanation:
The quadratic equation is
or 
. To complete square we take the coefficient of x divided by 2, square that value and add the result to both sides. In the equation given the number to do the process is 20, not 6, then the solution method is incorect.
Create a two variable system. 2h+3c=16 and 2h+10c=44 multiply one by -1 to cancel the 2h. ( I multiplied the second equation ) -7c=-28 --> c = 4
Answer:
-2 < x
Step-by-step explanation:
-1 < 3 + 2x
bring the 3 to the other side and minus it
-1 < 2x
-3
______
-4< 2x
now divide 2 by both sides
the two eliminates itself
so it equals
-2< x
The answer is D because if the perimeter of wxyz can be found by multiplying 2 with the perimeter of hjkl, then the area would be area of hjkl times 2
