Destribute then combined like terms?
Answer:
All students in each grade
Step-by-step explanation:
70+5x=320
5x=250
x=50
The mechanic charged $50 per hour.
Answer:
B. (-1,7)
C. (0,5)
D. (2,3)
Step-by-step explanation:
We solve this question looking at the graphic.
A. (-7, 1)
When
, and thus (7,-1) is not solution of the equation.
B. (-1,7)
When
, and thus (-1,7) is a solution of the equation.
C. (0,5)
When
, and thus (0,5) is a solution of the equation.
D. (2,3)
When
, and thus (2,3) is a solution of the equation.
E. (3, 2)
When
, and thus (3,2) is not part of the solution
F. (5,0)
When
, and thus (5,0) is not part of the solution
Every triangle equals 180 degrees, and we're trying to find the angle of DBA. So, we can identify DAB as a 90 degree angle to start. Then we can identify that ACB = ADB, meaning ADB is 30 degrees. With that information, we have this equation:
DBA = 180 - 90 - 30
DBA = 60