Answer:
Equation: (5x + 20) + (3x - 30) + (2x + 10) + 8x = 360
x = 20
Angle B = 30°
Step-by-step explanation:
Given:
<A = 5x + 20
<B = 3x - 30
<C = 2x + 10
<D = 8x
Sum of interior angles of a quadrilateral = 360°
Therefore:
<A + <B + <C + <D = 360°
(5x + 20) + (3x - 30) + (2x + 10) + 8x = 360
Solve for x
5x + 20 + 3x - 30 + 2x + 10 + 8x = 360
Collect like terms
5x + 3x + 2x + 8x + 20 - 30 + 10 = 360
18x = 360
Divide both sides by 18
x = 360/18
x = 20
<B = 3x - 30
Plug in the value of x
<B = 3(20) - 30 = 60 - 30
<B = 30°
What do you need help with?
Answer:
On a coordinate plane, a straight line crosses the y-axis at (0, 0)
Step-by-step explanation:
Required
Which represents a proportion
For a graph to represent a proportion, the line of the graph must pass through the origin (i.e. it must pass through (0,0))
From the list of options, only option (a) passes through (0,0).
Other options (b - d) pass through points other than the origin.
<em>Hence, (a) is correct</em>
If you want area it’s 16 if you wanted perimeter it’s 20 if your asking for the number of the width it’s 8