Sum of aritmetic sqeuqnece is
(n/2)(a1+an)
a1=first term
an=nth term
n=how many terms
so we gots
a1=3(1)-4=-1
a18=50
n=18
(18/2)(-1+50)
(9)(49)
441
other one
a1(1-r^(n+1))/(1-r)
2(1-2^(15+1))/(1-(1/4))
about 2 and 2/3, so closer to 3
Answer:
150% change
Step-by-step explanation:
Formula for Percent change = C =[ (new - old)/ old ]* 100%
C = [ (25 in. - 10 in.) / 10 in. ] = [15/10 ] * 100% = 150 %
Answer:
-115, -2.4, -2.25, 1.6, 1510
Step-by-step explanation:
Answer:
(33 - 5)/7 = 4
Step-by-step explanation:
Answer:
The triangles are congruent.
Step-by-step explanation:
The dashes represent the same size of a side.
If one of the triangles were flipped, the dashes will be in the same place on each triangle causing them to be congruent.
