Answer:
(4,12)
(-1,-3)
Step-by-step explanation:
x^2 - y = 4
y = 3x
Use substitution. Substitute 3x for y in the first equation
x^2 - (3x) = 4
x^2 -3x =4
Subtract 4 from each side
x^2 -3x -4 = 4-4
x^2 -3x-4 =0
Factor
(x-4) (x+1) =0
Using the zero product property
x-4 =0 x+1 =0
x=4 x=-1
Now to find y for each x solution
x=4
y =3x = 3(4) =12
(4,12)
x=-1
y =3x = 3(-1) =-3
(-1,-3)
Answer:
27,040,000 = 27,040,000
Step-by-step explanation:
Answer:angle m
Step-by-step explanation:
Answer:
48,24,30
Step-by-step explanation:
Let, the length of second side be x
A/c to question,
first side (a) = 2x
second side (b) = x
third side (c) = x + 6
Perimeter of ∆ (p) = 102
And,
Perimeter of ∆ = a + b + c
102 = 2x + x + x + 6
102 - 6 = 4x
96 = 4x
x = 96/4
x = 24
Now,
first side = 2*24 = 48
second side = 24
third side = 24 + 6 = 30
