Answer: Length = 28cm
Width = 7cm
Step-by-step explanation:
Let the width be represented by x.
Since the length is four times its width. Therefore, the length would be:
= 4 × x = 4x
The perimeter of a rectangle is calculated as:
= 2(length + breadth)
Therefore, 2(4x + x) = 70
2(5x) = 70
10x = 70
x = 70/10
x = 7
Therefore, width = 7cm
Length = 4x = 4 × 7 = 28cm
Ac+2b=3.2
6bc+4a=8.2
12a-b to the power of 2=0.75
8(a+b+c)-5c =16.4
Q - 6 = √(27 - 2q)
----------------------- each side squared by two
(q - 6)² = 27 - 2q
q² - 6q - 6q + 36 = 27 - 2q
q² - 12q + 36 = 27 - 2q
------------------------ move all terms to the left side
q² - 12q + 2q + 36 - 27 = 0
q² - 10q + 9 = 0
------------------------ factorize
(q - 9)(q - 1) = 0
q = 9 or q = 1
The solution is
q = 9
or
q = 1
Answer:
D x-1 x≠4
Step-by-step explanation:
x^2 +3x-4
-----------------
x+4
We know that x cannot equal 4 since the denominator would go to zero
Factor the numerator
(x+4) (x-1)
-----------------
x+4
Cancel like terms (x+4)
x-1 x≠4
The rate at which battery charges is 10 percent per minute.
According to the statement
we have given that the charging capacity of battery in the graphical representation.
And we from this we have to find the percentage by which battery charges.
And the graphical representation given is :
The horizontal axis is from zero to thirty-two-point-five with a scale of two point five and is titled Time in minutes. The vertical axis is from zero to one hundred with a scale of five and is titled Capacity, percent charged. The graph of the line is y equals two x plus forty. The graph ends at thirty minutes.
A first quadrant coordinate plane. The horizontal axis is from zero to thirty-two-point-five with a scale of two point five and is titled Time in minutes.
And according to this representation it is clear that the percentage by which battery charges is 10 percentage per minute.
So, The rate at which battery charges is 10 percent per minute.
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