Answer: Length: 21 cm Width: 7 cm
Step-by-step explanation:So, two of the sides are 3 units long, and two of the sides are 1 unit long. The total number of units in the perimeter of the rectangle is 8.
56cm / 8units = 7cm/unit
So, the length of the rectangle is 7cm/unit x 3 units, or 21 cm.
The width of the rectangle 1/3 of the length, or 7cm.
Length: 21 cm
Width: 7 cm
The correct answer is D) x = 4 and x = -1
In order to solve this, we plug into the quadratic equation.
x = 
In this case, a is the coefficient of x^2 (-1), b is the coefficient of x (3) and c is the constant (4). Now we plug in and solve.
x = 
x = 
x = 
x = 
And then we'll split into the two possible answers.
(-3 + -5)/-2 = -8/-2 = 4
(-3 - -5)/-2 = 2/-2 = -1
Answer:
40 metre
Step-by-step explanation:
Given:
height =4 meters
area = 20 square meters
Area of a right triangle can be calculated using the expression below
1/2 b × h
Then substitute the given values
Area of a right triangle= 1/2 × 4 × 20
= 40 metre
Hence, the length of the base of a right triangle is 40 metre
