Answer:
45°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cosB =
=
=
, hence
B =
(
) = 45°
Answer: Rewrite equations:
3x=y;x−2y=10
Step: Solve3x=yfor y:
3x=y
3x+−y=y+−y(Add -y to both sides)
3x−y=0
3x−y+−3x=0+−3x(Add -3x to both sides)
−y=−3x
−y
−1
=
−3x
−1
(Divide both sides by -1)
y=3x
Step: Substitute3xforyinx−2y=10:
x−2y=10
x−23x=10
−5x=10(Simplify both sides of the equation)
−5x
−5
=
10
−5
(Divide both sides by -5)
x=−2
Step: Substitute−2forxiny=3x:
y=3x
y=(3)(−2)
y=−6(Simplify both sides of the equation)
Step-by-step explanation:
Answer: 82.26 yd^2
Step-by-step explanation:
Solve this question in steps.
Find the area of the rectangle.
9x6=54
Now, find the area of the circle.
The diameter is 6 so the radius must be 3.
3^2xpi=9pi=28.26
Add the values together.
54+28.26=82.26
Hope this helps!
Answer:
57
Step-by-step explanation:
getting brainlys