They add to 180
x+y+z=180
smallest (lets say that's x) is 36
36+y+z=180
minus 36 both sides
y+z=144
each term is the common difference away from the next term
z=y+d
y+y+d=144
and also
36+d=y so
36+d+36+d+d=144
3d+72=144
minus 72 both sides
3d=72
divide both sides by 3
d=24
common difference is 24
36+24=60
60+24=84
36+60+84=180
correct
largest angle is 84 degrees
We have cos( x - y ) = cosxcoy + sinxsiny <=> cos ( π - x ) = cosπcosx + sinπsinx <=> cos ( π - x ) = (-1)cosx + 0sinx = -cosx;
What is 3/5 of $40 restaurant bill equals $
the answer is $24
Answer:
y= (-7/9)(x-1)
Step-by-step explanation:
finding the slope:
slope= rise/run
rise= 7-0=7
run= -8-1= -9
slope= -7/9
point slope form:
y= (-7/9)(x-1)
It is the same thing as the average you add everything up then you divide by the number of numbers you added together