Step-by-step explanation:
the perimeter is the sum of the 4 individual sides.
if the sides are doubled, so is the sum of them.
therefore, the new perimeter is then
12×2 = 24 cm
A quadrant is one of the 4 divided areas of a coordiante plan.
Answer:
I had a hard time reading the + & - signs in the equations. Look at my notes.
5x - 4 = 95.44° (Note: Is the - sign correct?)
x - 2 = 17.89° (Note: Is the - sign correct?)
3x + 7 = 66.67° (Note: Is the + sign correct?)
Step-by-step explanation:
180 = 5x - 4 + x - 2 + 3x + 7
combine like terms:
180 = 9x + 1
9x = 179
x = 19.89
5x - 4 = 5(19.89) - 4 = 95.44°
x - 2 = 19.89 - 2 = 17.89°
3x + 7 = 3(19.89) + 7 = 66.67°
