Answer:
x = 11
Step-by-step explanation:
Combine the like terms in the given 7x-12=6x-1:
7x - 6x = -1 + 12, or
x = 11
She worked as a carpenter for 12 hours and as a blacksmith for 18 hours.
Assuming you mean she earned $20 as a carpenter and $25 as a blacksmith per hour, with a total of 30 hours for $690,
let c represent carpenter hours and b for blacksmith hours.
20c + 25b = 690
c + b = 30
Subtract b from each side so that c = 30 - b
Plug this value into the first equation
20(30 - b) + 25b = 690
600 - 20b + 25b = 690
600 + 5b = 690
5b = 90
b = 18
To find c, plug this value of b into the other equation
c + 18 = 30
c = 12
Try graphing y=x^3. It crosses the x-axis at (0,0), and this point represents the one and only real root.
Every form of a cubic function has a graph that crosses the x-axis in 1 or 3 places.
Thus, the correct answers to this particular problem are B and C.
Additionally, certain cubic function forms have graphs that cross the x-axis in one unique place, but which touch (but do not cross) the x-axis. Here you have one unique real root plus one repeated (duplicated) real root, for a total of 3 roots.
Using these facts, decide which of the four given answers are correct.
Answer:
$82.5
Step-by-step explanation:
Step one:
Given that the percent of which is 10% amount to $8.25
We can estimate the of the Jeans as
Step two
Let the cost be x
10 percent of x= 8.25
10/100*x=8.25
0.1x=8.25
Divide both sides by 0.1 to get the value of x
x=8.25/0.1
x=$82.5
The cost of the jeans is
$82.5