Answer:
D. 19
Step-by-step explanation:
because they are parallel bases you can compare
63/57 = 21/x
x = 19
Answer:

Step-by-step explanation:
Given that when you add two numbers together the result is 3.
The greater of the number is given as a.
Let "x" represent that lesser number.
Thus:

To make x the subject of the formula. Subtract a from both x.


Therefore, the expression that represents the lesser number, x, is:

Where’s the rest of the question?
The value of x is 10
Step-by-step explanation:
We know that the sum of internal angles of a quadrilateral is 360 degrees
So,
Given
Angle 1 = A1 = 3x+10
Angle 2 = A2 = 9x+50
Angle 3 = A3 = 4x
Angle 4 = A4 = 13x+10
So,

Subtracting 70 from both sides

Dividing both sides by 29

Hence,
The value of x is 10
Keywords: Angles, Quadrilateral
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Answer:10
Step-by-step explanation: