7. 10.4
8. 2.11
Answer:
3 and 3/5
10 and 2/5
2 and 11/10
Step-by-step explanation:
The total length of the two plank is 4x cm
Addition in maths is a process of combining two or more numbers.
Given that, A carpenter has two planks of wood. One plank is x cm long, the other plank is 3x cm long.
To find the total of the length of the plank, we will have to add their lengths,
Therefore, total length = 3x+x = 4x
Hence, the total length of the two plank is 4x cm
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9 was the square of 3. The square of -3 is 9 as well
(−3)2=(−3)⋅(−3)=9(−3)2=(−3)⋅(−3)=93 and -3 are said to be the square roots of 9.
All positive real numbers has two square roots, one positive square root and one negative square root. The positive square root is sometimes referred to as the principal square root. The reason that we have two square roots is exemplified above. The product of two numbers is positive if both numbers have the same sign as is the case with squares and square roots
a2=a⋅a=(−a)⋅(−a)a2=a⋅a=(−a)⋅(−a)A square root is written with a radical symbol √ and the number or expression inside the radical symbol, below denoted a, is called the radicand.
a√aTo indicate that we want both the positive and the negative square root of a radicand we put the symbol ± (read as plus minus) in front of the root.
±9√=±3±9=±3Zero has one square root which is 0.
0√=0
C) 27
D) 81
Answer: The answer is 9.
Step-by-step explanation:
Since f(n+1) = f(n)
If n= 1
f(2) = f(1)
if n= 2
f(3) = f(2) = 9 {since f(3) is 9}
Since f(2) is now 9 and f(2) = f(1), therefore f(1) will also be 9.
No answer!