Answer:
B
Step-by-step explanation:
The diagram basically shows three angles that make up a straight line.
We know the angle of a straight line is 180°.
Since there are three angles, Angle 1, Angle 2, and Angle 3 that make up a straight line, we can write:
Angle 1 + Angle 2 + Angle 3 = 180
3x + 4x + 2x = 180
9x = 180
x = 180/9
x = 20
The correct answer is B
Answer:
Area =100 in^2
Step-by-step explanation:
scale factor of the triangles is :15/21=5/7
if two similar shape has a scale factor a/b then the area is a^2:b^2
area of first shape/area of second shape=5/7
x/196=(5)²/(7)²
49x=4900
x=4900/49=100
area=100
check: 100/196=25/49=a^2/b^2
i hope it is right
WQJAbnuhajle hove ukleg disklhdnd obisolsyhdgo fibpiouhod09ziusvcevn Step-by-step explanation:
Answer:
-1/2
Step-by-step explanation:
whatever is beside the x will be your slope
Apply the cosine double angle identity to get:
Cos 2PI/3
