In the first series, the summation applies to the whole (2n+3) inside
the parentheses, so the 3 gets summed up 5 times.
But in the second one, the summation only applies to the 2n , so
the 3 is only added after the summation is finished.
The difference between five 3s the first time and one 3 the second time
is your 12 .
Answer:
a=2,b=4. (3a+b)=3*2+4=10.
SQUARES BECAUSE THEY ARE IN THE MIDDLE DUMMY
Answer: 50 texts
Step-by-step explanation: 20.8 - 5.80 = 15
15 ÷ .30 = 50
Answer:
26 , 10 , 3
Step-by-step explanation:
Any number larger than 2 will work.