Answer: Variant C
Step-by-step explanation:
f(x) = 3x^2 − 4
For finding f(-2) just replace x with - 2 like this:
f(-2)=3*((-2))^2-4=3*4-4=12-4=8
How to do it
3n=25.50
c= 8.5t
Answer:
6/10 or 36/60
Step-by-step explanation:
You see to get an equavilent fraction all you have to do is multiply by two then, later on, that same number.
Hope this helps :)
Let x be the first jug, y the second jug.
From first statement, subtracting 1 from x, makes them equal:
x - 1 = y
From second statement, subtracting 2 from y, makes it half of x:
x/2 = y-2
Solve system with substitution:
x/2 = (x-1) -2
x/2 = x - 3
x- x/2 = 3
x/2 = 3
x = 6
y = x-1 = 6-1 = 5
Therefore the largest jug contains 6 liters.
The given equation is ⇒ 100 - (1/2) x = 92
100 - (1/2) x = 92 ⇒ Add (-100) to both sides
-100 + 100 - (1/2) x = 92 - 100
∴ -(1/2) x = -8 ⇒ Multiply both sides by (-2)
∴ -2 * (-1/2) x = -8 x -2
∴ x = 16
So, the value of x will be equal 16
