Answer:
undefined
Step-by-step explanation:
x²-7x=12
we make the equation equal to zero by subtracting 12 from both sides, we have..
x²-7x-12 = 12-12
x²-7x-12= 0
we find the factors of 12 such that when we multiply them we will get -12 and when we add them we will get -7, and those factors are but those values are not possible..
so answer = undefined
Answer:
x = 7
y = 11
z = 14
Step-by-step explanation:
x + y + z = 32
Let's say the youngest is x, middle is y and oldest is z.
y= x+4 (age of the youngest + 4)
z= 2x (twice as old)
We can replace y and z in the main equation above with these values that contain x.
x + (x + 4) + 2x = 32
4x = 28, divide both sides by 4
x = 7
y = x + 4 = 7 + 4 = 11
z = 2x = 2*7 = 14
And to check: 7 + 11 + 14 = 32
Answer: 3.285714286
Step-by-step explanation: subtract 2 from both sides then divide by 7
4 & 6 cause one of both of them got eaten
Answer:
find the constant rate of proportionality
Step-by-step explanation:
