L = 5 and w = 3
Perimeter = 2(l + w)
P = 2(5 + 3)
P = 2(8)
P = 16 cm
Area = l*w
Area = 5*3
Area = 15 cm^2
Answer:
The width of the river is about 8.39 m.
Step-by-step explanation:
Tan = Opposite/Adjacent
The width of the river is the side of a right triangle opposite the angle of 40°. The 10 m distance is the length of the side adjacent to the measured angle. So, we have ...
tan(40°) = width/(10 m)
Multiplying by 10 m, we get ...
width = (10 m)tan(40°) ≈ 8.39 m
The width of the river is about 8.39 m.
Answer:
135 degrees
Step-by-step explanation:
corresponding angles are angles that are equal to each other
Distributive proeprty
a(b+c)=ab+ac
3(x+7)=3x+21