Answer:
The correct answer is B
Step-by-step explanation:
View attachments.
Use symbolab to compare the equations :)
Hope this helps XD
<u>Let's take this problem step-by-step</u>:
<u>The ;unlabeled angle' adjacent to the 'outside angle of measure 78°'</u>
⇒ is on a straight line
⇒ sum of angle measure = 180 degrees

<u>Now we know:</u>
⇒ sum of all angles in a triangle ⇒ 180°
<u>Let's put that in equation form and solve:</u>

<u>Answer: 21°</u>
<u></u>
Hope that helps!
#LearnwithBrainly
The total angle sum of a triangle is 180°
As such, 180= 78 + 2s +4s
102= 6s
s=17
Answer:
64
Step-by-step explanation:
2(7-3)^4 divided by 8
2(4)^4 divided by 8
2(256) divided by 8
512 divided by 8
64
Subtract the two over to cancel it out
3x=36
then divide by 3 to get an answer of
x=12