Answer: 7x + 12
Step-by-step explanation:
The price of each plan = $x
Since three of the seven friends pay an extra $4 per month for unlimited text messaging, the cost of the three friends will be:
= 3(x + 4)
The cost if the other four friends will be:
= 4 × x
= 4x
Therefore, the total cost of the seven plans will be:
= 4x + 3(x + 4)
= 4x + 3x + 12
= 7x + 12
Found this when I was doing my own work, hope this helps.
Step-by-step explanation:
Force = pressure * area
= 200 * 3.7
= 740 N
The question is:
Let f(x) = x² - 10x + 6
a. Find the values of x for which the slope of the curve y = f(x) is 0.
b. Find the values of x for which the slope of the curve y = f(x) is -6.
Answer:
(a) The value of x for which the slope is 0 is 5
(b) The value of x for which the slope is -6 is 2
Step-by-step explanation:
Given y = f(x) = x² - 10x + 6
The Slope is given as dy/dx = f'(x)
It is obtained by differentiating y = f(x) once with respect to x.
Let us find the first derivative of
y = x² - 10x + 6
That is
dy/dx = 2x - 10
Now
(a) We want to find the value of x for which the slope dy/dx = 0
We set
2x - 10 = 0
And solve for x, to have
2x = 10
x = 10/2 = 5
(b) The value of x for which the slope is -6
We set
2x - 10 = -6
2x = -6 + 10 = 4
x = 4/2 = 2
9514 1404 393
Answer:
x = 5.07142
Step-by-step explanation:
To solve the equation ...
sin(25°) = x/12
multiply by the denominator of the x term.
12·sin(25°) = 12(x/12)
x = 12·sin(25°)
x ≈ 5.07142
_____
You may need to round the answer to satisfy your problem requirements.