Answer: lma0
Step-by-step explanation:
Answer:
x is 8 and -2
Step-by-step explanation:
To find the number you would start by writing out the equation using x as the number. The equation would be x+2x=21. The first step to solve this equation would be to combine like terms, making the equation 3x=21. Finally, you would divide both sides by three, making your answer x=7.
A quadrilateral has 4 sides and 4 angle.
The sum of the 4 angles need to equal 360 degrees.
4th angle = 360 - 25-40-90
4th angle = 205 degrees.
The measure of
is 68 degrees
<h3>How to solve the angle?</h3>
The complete question is in the attached image
The value of
is calculate using the following cosine function

Evaluate the quotient'

Take the arc cos of both sides

Evaluate the arc cos

Approximate to the nearest degree

Hence, the measure of
is 68 degrees
Read more about right triangles at:
brainly.com/question/2437195
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