Answer:
n/4=6n=4
Step-by-step explanation:
Find the area of the larger rectangle around the shaded shape and subtract the 4 you congruent triangles from it.
8x18 - [4(1/2 x 4 x 4)
144 - 4(8)
144-32
112 sq. m
Answer:
Write the expression (−15.5) + 35.5 in a different way, using the commutative
Answer:
an = a1 + (n-1)*d
a20 = -108
Step-by-step explanation:
For the arithmetic sequence
a1 = -13, d = -5
a2 = a1 +d (where d is the ratio of the sequence)
a2 = -13 -5
a2 = -18
a3 = a2 + d
But a2 = a1 + r
a3 = a1 + 2r = -13 + 2(-5) = -23
So: an = a1 + (n-1)*d
a20 = -13 + 19*(-5)
a20 = -108