Answer:
51
Step-by-step explanation:
4x + 3
Let x = 12
4*12 +3
Multiply first
48+3
Then add
51
Let the length of the garden be x and the width of the garden be y.
x*y = 108
2x + 2y = 48 giving x + y = 24 or y = 24 - x
substitute the second equation into the first,
x*(24-x) = 108
24x - x^2 = 108
x^2 - 24x + 108 = 0
(x-18)(x-6) = 0
So, x = 18 or x = 6.
But if x = 18, y = 6 and if x = 6, y = 18 so both solutions are actually the same with just the width and length swapped. So, your garden is 18 meters by 6 meters.
Answer:
Step-by-step explanation:
Just as a reminder, to find the ratio of 2 numbers, you divide the first by the second, and to divide 2 fractions, you multiply the dividend by the reciprocal of the divisor.
In this case, that would be:
=
I hope this helped you.
Answer:
12
Step-by-step explanation:
We are finding the discriminant
b^2 -4ac
2x^2 - 2x - 1 = 0
a =2 b = -2 c = -1
(-2)^2 - 4(2)(-1)
4 +8
12