1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lord [1]
3 years ago
5

Ms Harris has a taco stand. She has found that her daily costs are approximated by the following equation:

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
3 0
<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
You might be interested in
The volume of this prism is 378cm3. What is the length of x First correct answer will get 5 starts and brainliest!
Nitella [24]

Answer:

14cm

Step-by-step explanation:

You divide 378 from 27

4 0
3 years ago
AC=22,BC=x+14, and AB=x+10 find x
Elena-2011 [213]

Answer:

AB + BC = AC                 Segment Addition Postulate

(x + 10) + (x + 14) = 22     Substitution

2x + 24 = 22                   Simplify (added like terms)

2x = -2                            Subtraction Property of Equality

x = -1                               Divison Property of Equality

Answer: x = -1

Step-by-step explanation:

please give brainliest

7 0
3 years ago
Two planes, which are 2235 miles apart, fly toward each other. Their speeds differ by 95 mph. If they pass each other in 3 hours
lora16 [44]

Answer:

325 mph and 420 mph

Step-by-step explanation:

If the speed of the slower plane is x, then the speed of the faster plane is x + 95.

The distance traveled by the slower plane is 3x.

The distance traveled by the faster plane is 3(x + 95).

The total distance is 2235 miles.

3x + 3(x + 95) = 2235

3x + 3x + 285 = 2235

6x = 1950

x = 325

x + 95 = 420

The speed of the planes is 325 mph and 420 mph.

5 0
4 years ago
How do u do #22? Plz show me how u did it
hram777 [196]
3x-y=6, in order to be able to graph this you would have to change the equation to y=, so you need to subtract 3x from that side making it -y=-3x+6, now you need to y positive, so divide both sides by -1, thus making the equation look like y=3x-6, now if you can't plug this into a calculator to see what it would look like then you need to know what y=mx+b means. y is the equation you want to graph obviously, m = the slope, so our slope in this case would be -3, and b = our y intercept, so it would be (0,-6), so plot (0,-6) and use the slope to plot the rest of the points, some other points in this line should include (2,0), (-1,-9) and (4,6), just to name a few. Hope this helps.
4 0
3 years ago
In the middle school debate club, 30% of the members are in sixth grade. If there are 12 graders in the club, how many total mem
Slav-nsk [51]
The answer is D because you just multiply the percent times 40 to get 12.
6 0
3 years ago
Read 2 more answers
Other questions:
  • How can polygons be considered a subcategory of two-dimensional figures?
    14·1 answer
  • Solve the equation, P= a + b + c, for a.
    13·1 answer
  • Fred wants to buy a video game that costs $54. There was a markdown of 20%. How much is the discount?
    9·2 answers
  • Please help me solve it. The first correct answer gets Branliest
    5·1 answer
  • Find the diameter of a circle whose circumference is 18.85 m.
    13·2 answers
  • For f(x)=2x^2+1 and g(x)= x^2-7, find (f+g)(x)
    7·1 answer
  • Which answers are examples of the Law of Syllogism?
    15·2 answers
  • Find all of the missing angle measures. Remember you cannot assume right angles or diameters. Also think about how many degrees
    5·1 answer
  • What id the height of the triangle?​
    15·2 answers
  • FREE BRAINLIEST QUICK WHATS THE BEST WAY TO FAKE BEING SICK SO YOU DON'T HAVE TO GO TO SCHOOL
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!