Answer:
1.= 2.5
2.= is incorrect because there should not be more than one = sign
Step-by-step explanation:
Answer:
see below
Step-by-step explanation:
16x^2 − 8x + 1
(4x)^2 -8x +1
Factor
This is a perfect square trinomial
a^2 -2ab +b^2 = (a-b)(a-b)
(4x)^2 -8x +1 = (4x-1) (4x-1)
The area of a square is given by
A = s^2
(4x-1) ^2 = s^2
4x-1 = s
The side length is 4x-1
(81x^2 − 4y^2)
(9x)^2 - (2y)^2
This is the difference of squares
a^2 - b^2 = (a-b) (a+b)
(9x-2) (9x+2)
The area of a rectangle is
A = l*w
(81x^2 − 4y^2) = (9x-2) (9x+2)
The dimensions are (9x-2) (9x+2)
A + 12.5 = 20
- 12.5 -12.5
———————
A = 7.5
The answer is 7.5
Answer:
20 kph
Step-by-step explanation:
Step 1:
10 : 30 Ratio
Step 2:
60 mins in hour
Step 3:
10 : 30 = x : 60 Equation
Step 4:
30x = 600 Multiply
Step 5:
x = 600 ÷ 30 Divide
Answer:
x = 20
Hope This Helps :)
