If the measure of an angle is 13 degree, find measure 0f its supplement
1 answer:
Answer:
167 degrees
Step-by-step explanation:
supplementary angles equal to be 180 degrees, so subtract the given angle from 180 to find the missing angle.
180-13=167
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Answer:
32760
Step-by-step explanation:
This is a permutation of 15 objects taken 4 at a time. To calculate this, we use the formula:
In our case, n is 15 and r is 4:
Answer:
Not sure sorry
Step-by-step explanation:
because 4x+20y=-36,so ( 4x+20y)/2=2x+10y=-18
(2x+10y)-(2x+5y)=-18-18
5y=-36
then y=-7.2
because 2x=18-5y
so x=(18-5y)/2=(18-5*(-7.2)）/2=27
