Answer:
given
n=9
a=1
d=3-1=2
Step-by-step explanation:
now , by formula,
sn = n/2(2a+(n-1)d)
= 9/2(2×1+(9-1)×2)
=9/2×18
=81
Answer:$133.455
Step-by-step explanation:
Answer:
Where is the triangle?
you might have to add a picture or a worded problem
Step-by-step explanation:
Answer:
x= 1
/3
y+
−5
/3
y=3x+5
Step-by-step explanation:
brainliest?
Answer:
50º
Step-by-step explanation:
Angle D & B are vertical angles, meaning they are equal in measure.
So if Angle B = 50º, then Angle D must also be 50º.
Hope this helps! Have a great day!