Answer:
C) AB = BC = CD = DA = 2√5
Step-by-step explanation:
Given
A(1, 4)
B(3, 0)
C(1, −4)
D(−1, 0)
We get the distance between point A and point B
AB = √((3-1)²+(0-4)²) = √20 = 2√5
BC = √((1-3)²+(-4-0)²) = √20 = 2√5
CD = √((-1-1)²+(0-(-4))²) = √20 = 2√5
DA = √((1-(-1))²+(4-0)²) = √20 = 2√5
C) AB = BC = CD = DA = 2√5
Answer:
a rational number is an expression in which the numerator and denominator are polynomials. this is useful to know because often polynomials can be factorized. besides, if there is a variable in the denominator, there will be one or more restrictions.
example: (4x²-25)(2x+5) is simplified to 2x-5 with restrictions x≠-5/2
34.8 miles because you add all of the miles together
Answer:
Step-by-step explanation:
The answer is 11.
x - 30 = 14 - 3x
4x = 44
x = 11
A number (x) decreased by 30 (x - 30) is the same as (=) 14 decreased by 3 times the number (14 - 3x).