<span>a. find the number of units of tacos she must sell to minimise her cost.
</span>to find a minimum we need to find the function derivative and make it equal to zero:
dc/dx = 2x - 40 = 0
2x = 40
x = 20
therefore to minimize the cost, she needs to sell 20 units of tacos
<span>b. find the minimum cost.
</span>that can be done by substituting the previous result, 20 tacos, in the original equation:
<span>C(x) = x^2 - 40x + 610
</span>C(20) = (20)^2 - 40(20) + <span>610
</span>= 400 - 800 + 610
= 210
the minimum cost will be 210 dollars
Answer:
3
Step-by-step explanation:
(6a+9)-7b
There are 3 terms
The answer is D. because first you got solve the problem.
y=2.5x
(turn y to 0)
0= 2.5x
÷2.5 ÷2.5
_________
0=x
So we got one answer (0,0)
y=2.5x
(turn x to 0)
y= 2.5(0)
y=2.5
(2.5, 0)
When you do (0,0) (2.5,0) on the graph it will look like D.)
Huh huh huh huh huh huh huh
Answer:
The linear function with the smallest slope must be multiple of one of the other two linear functions if all functions are coplanar. Otherwise, they intersect at the given point in space.
Step-by-step explanation:
A system of two linear functions with two variables have an unique solution on a given plane, as there are three linear function, it means that linear function with the smallest slope must be multiple of one of the other two linear functions.
But, if those functions are not all coplanar and have 3 variables, they intersect at the given point.
