Step-by-step explanation:
∑k=150(3k+2)
First find a1 and a50 :
a1=3(1)+2=5a20=3(50)+2=152
Then find the sum:
Sk=k(a1 + ak)2S50=50(5 + 152)2=3925
Answer:
-3/2
Step-by-step explanation:
Answer:
17.5 %
Step-by-step explanation:
5.6 is 17.5 percent of 32
Percent of Change:
Difference/Original
(20-16)/16 = 4/16 = 1/4 = 25% increase
Answer:
25
Step-by-step explanation:
-25 to 0 is 25 and 25 to 0 is 25
Opposite of -25 is 25
So lettter d