A) 2(1+2c)
2+4c = 2+4c
B) 6(14r-2t)
= 84r-12t
Square perimeter =4x cm.
The complete length that a square's edge encompasses is referred to as its perimeter. Any enclosed geometric shape's perimeter may be computed by measuring the space around it.
By calculating the total of all the sides of a square, the perimeter may be determined. The perimeter of a square will be stated as,
The perimeter of square = s + s + s + s
⇒Perimeter of square = 4s, where "s" is the side length of the square.
This is because all edges of a square are equal and each edge measures "s" units.
<h3>Calculating the perimeter of a square:</h3>
Mathematically, the formula for calculating a square's perimeter is: Square perimeter, (P) = 4 Side
⇒P= 4x cm
It is concluded that the solution is 4x cm.
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It would take 25 years for Birr 500 to quadruple if invested at a rate of 12% simple interest per annum.
<h3 /><h3>Simple interest formula</h3>
Using the simple interest formula A = P(1 + rt) where
- P = princial amount = Birr 500,
- A = final amount = 4P (since it is quadrupled),
- r = rate = 12% = 12/100 = 0.12 and
- t = time to quadruple
<h3 /><h3>Finding the time it takes to quadruple </h3>
Since we require t, making t subject of the formula, we have
t = [(A/P) - 1]/r
Substituting the values of the variables into the equation, we have
t = [(A/P) - 1]/r
t = [(4P/P) - 1]/0.12
t = [4 - 1]/0.12
t = 3/0.12
t = 25 years
So, it would take 25 years for Birr 500 to quadruple if invested at a rate of 12% simple interest per annum.
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There are several possible terms which can be included given the sequence formula an = 4n - 7. If we list all the possibilities, here are as follows:
n an
0 -7
1 -3
2 1
3 5
. .
. .
. .
n an
Substitute any number n to an and you can get all the terms in the sequence.
Answer:
The number N = 26
Step-by-step explanation:
The statement is :
Six less than twice a number is that of that number plus 20
The statement now written in digits as
Let the number be N
So, 2 N - 6 = N + 20
Or, 2 N - N = 20 + 6
Or, N = 26
Hence the number N is 26 Answer
