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
I hope this was helpful, Please mark as brainliest
Answer:
y = 3x + 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m =
with (x₁, y₁ ) = (- 3, - 5 ) and (x₂, y₂ ) = (0, 4 )
m = = = = 3
The line crosses the y- axis at (0, 4 ) ⇒ c = 4
y = 3x + 4 ← equation of line
There's lots of even functions, but two that come to mind are the absolute value function, IxI, and x^2. These are even because they are reflected over the y axis. Another way to find this is that (-x)^2 is equal to x^2 and so is I-xI, the algebraic method. Good luck!
Answer:
its called um srry dont know
Step-by-step explanation: