Answer:
5cm
Step-by-step explanation:
A rectangle is a quadrilateral (4 sided polygon) with 2 opposite sides parallel and equal.
Area of a rectangle = length x breadth
Given that length = (2x - 1) , breadth = ( x + 2), Area = 63cm².
Since area = length x breadth
Area = (2x - 1) x ( x + 2)
(2x - 1)(x + 2) = 63
Expand the bracket
2x (x + 2) -1 ( x + 2) = 63
2x² + 4x - x - 2 = 63
2x² + 3x - 2 = 63
2x² + 3x -2 -63 = 0
2x² + 3x - 65 =0
We'll Solve the quadratic equation, we can solve using factorisation method.
Factor of -130 that is (- 65 x 2) that add up to +3 the coefficient of x
Factors = 13 and -10
Rewrite equation
2x² - 10x + 13x - 65 = 0
Factorise
2x(x - 5) + 13 ( x - 5) = 0
2x + 13 = 0 or x - 5 = 0
2x = -13 or x = 5
Since we can't have a negative length then x = 5cm
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Question
is -3 a solution of
-3x+5=5x-25
Answer:
<h2>
No, the solution is -15/4</h2>
Step-by-step explanation:
-3x + 5 = 5x - 25
-8x = -30
x = - 30 : 8
x = - 15/4
------------------
Answer:
10/14 or 0.71428571428 or 71.428571428571%
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
We can find the slope by using
m = (y2-y1)/(x2-x1)
= (8-2)/(3-0)
= 6/3
= 2