Answer:

Step-by-step explanation:
Given that , the sum of the first nine terms of an arithmetic series is 162 and the sum of the first 12 terms is 288.

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<u>Related</u><u> </u><u>Infor</u><u>mation</u><u> </u><u>:</u><u>-</u><u> </u></h3>
• The sum of n terms of an AP is
• nth term of an AP is given by ,

Answer: The geometric mean of 125 and 5 is 25
Answer:
23
Step-by-step explanation:
Remember PEMDAS/order of operations (Parentheses, exponent, multiplication, division, addition, subtraction)
10*1/2+(-6)(-3)
10*1/2+18
5+18
23
The correct answer is < (B)
8+3 is 11
5*8 is 40 then take 2 away and you will get 38
11<38
Answer:
Let there be a square ABCD with diagonal AC=12 root 2 cm
Since angles of a square are all 90 degrees
pythagoras theoream
AB^2+BC^2=AC^2
Since all sides of square are equal
2AB^2=(12 root 2)^2
2AB ^2=144*2
AB^2=144
AB= root 144=12 cm
area of square = s^2 =12^2 = 144cm^2
hope it helps
Step-by-step explanation: