C = 120 B = 75
120+75 = 195
The measurement of ∠B is 168°
Given,
In the question:
Angle A and Angle B are supplementary angles.
If mA (x - 9)° and m/B= (7x + 21)°
To find the measure of ∠B
Now, According to the question;
What are supplementary angles?
Two angles are Supplementary when they add up to 180 degrees.
Now, ∠A+∠B = 180°
So,
⇒(x - 9)˚+(7x + 21)°=180°
=> 8x +12 = 180°
=> 8x = 180° - 12
=> 8x = 168
=> x = 168/8
=> x = 21
For the measure of ∠B :
∠B = (7x + 21)
∠B = 7 x 21 + 21
∠B = 168°
Hence, The measurement of ∠B is 168°
Learn more about Supplementary angles at:
brainly.com/question/13045673
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From the given information, the tallest player is: Dave.
<h3>Who is a player?</h3>
In sports, a player refers to an individual who takes part in a sports. It can be in football, rugby, badminton, lawn tennis, basketball, etc.
We can see from the above that Mike and Jim are faster and quicker shooters than Jason and Dave. Jim is the second fastest which means that Mike is the fastest. Since no person is the best (e.g. , tallest, quickest, best shooter) at more than one category, it then means that Dave is the tallest.
Learn more about sports on brainly.com/question/3951300
we know that
<u>a) By corresponding angles</u>
m∠6=m∠2
<u>b) By vertical angles</u>
m∠6=
so
m∠2= --------> equation 
<u>c) By supplementary angles</u>
+m∠2=
--------> equation 
substitute equation in equation
<u>Find m∠6 </u>
m∠6=
m∠6=
therefore
<u>the answer is</u>
the measure of the angle 6 is
