Let
x = 3a (first angle)
y = 3a (second angle)
z = 6a (third angle)
The total angle of a triangle is ALWAYS 180.
3a + 3a + 6a = 180
12a = 180
a = 15
Therefore, x = 45, y = 45, z = 90
Answer:
The measure of ∠BAC is 30°
Step-by-step explanation:
<h3><u>Given:</u></h3>
BAC = (x + 10)°
DAE = (2x - 10)°
Here, BAC and DAE are vertical angles, So they are equal
BAC = DAE
(x + 10)° = (2x - 10)°
x + 10° = 2x - 10°
Subtract 10° and 2x from both side we get,
x + 10° - 10° - 2x = 2x - 2x - 10° - 10°
-x = -20°
x = 20°
Here, The value of x is 20°
Now, We want to find ∠BAC
So,
∠BAC = (x + 10)° = 20° + 10° = 30°
Thus, The measure of ∠BAC is 30°
<u>-TheUnknownScientist</u><u> 72</u>
I wasn't sure whether marked up meant increased or like discounted so ill show you step by step.
10% is $5.
20% would be $10 because it is double the price of 10%.
Therefore if you meant it is 20% more than the original it would be $60.
If you meant it would be 20% less is would be $40.
Sorry its not much help but i wanted to do the best i could.
