First you bring the x to one side so u subtract 4x from 7x and you get the new equation as -9=3x+12 then you just solve and you get x is equal to -7
Discriminant = b^2 - 4ac
a = 4
b = 16
c = 16
16^2 - 4(4 x 16)
256 - (4x64)
256 - 256 = 0
Therefore it only has one root
Answer:ummm do you have a picture of the question?
Step-by-step explanation:
The gievn equation is ,

where t is the time in seconds and h is the no.of hamburgers assembled.
put h = 2 in equation (1).

blank A assembles 2 hamburges in 22.6 seconds.
put h = 3 in equation (1)

blank B assembles 3 hamburgers in 33.9 seconds.
put h = 5 in equation (1)

blank C assembles 5 hamburgers in 56.5 seconds.
put h = 8 in equation (1)

blank D assembles 8 hamburgers in 90.4 seconds.
Answer:
a = -4
b=-29
Step-by-step explanation:
<h3>Complex number:</h3>
First write the radicals in simplest form.
i² = -1


