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zubka84 [21]
2 years ago
9

Evaluate 1/3m -1-1/2n when m=21 and n =12 . How much it’s it ?

Mathematics
1 answer:
Alik [6]2 years ago
6 0

Answer:

0

Step-by-step explanation:

1/3(21) -1 -1/2(12)

7 - 1 - 1/2(12)

6 - 1/2(12)

6 - 6

0

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QUESTION 3 [10 MARKS] A bakery finds that the price they can sell cakes is given by the function p = 580 − 10x where x is the nu
Andru [333]

Answer:

(a)Revenue=580x-10x²,

Marginal Revenue=580-20x

(b)Fixed Cost, =900

Marginal Cost,=300+50x

(c)Profit Function=280x-900-35x²

(d)x=4

Step-by-step explanation:

The price, p = 580 − 10x where x is the number of cakes sold per day.

Total cost function,c = (30+5x)²

(a) Revenue Function

R(x)=x*p(x)=x(580 − 10x)

R(x)=580x-10x²

Marginal Revenue Function

This is the derivative of the revenue function.

If R(x)=580x-10x²,

R'(x)=580-20x

(b)Total cost function,c = (30+5x)²

c=(30+5x)(30+5x)

=900+300x+25x²

Therefore, Fixed Cost, =900

Marginal Cost Function

This is the derivative of the cost function.

If c(x)=900+300x+25x²

Marginal Cost, c'(x)=300+50x

(c)Profit Function

Profit, P(x)=R(x)-C(x)

=(580x-10x²)-(900+300x+25x²)

=580x-10x²-900-300x-25x²

P(x)=280x-900-35x²

(d)To maximize profit, we take the derivative of P(x) in (c) above and solve for its critical point.

Since P(x)=280x-900-35x²

P'(x)=280-70x

Equate the derivative to zero

280-70x=0

280=70x

x=4

The number of cakes that maximizes profit is 4.

5 0
2 years ago
Help please.....!!!!!??????^-^
KiRa [710]
I just told you the answer it is -5
8 0
3 years ago
1 It takes 1 cups of sugar and 3 cups of flour
scZoUnD [109]

For every 1 cup of sugar there's 3 cups of flour or vice versa. (For every 3 cups of flour there's 1 cup of sugar.)

<h2>Answer:</h2>

<u>The ratio of sugar to flour is </u><u>1 to 3</u><u>, </u><u>1:3</u><u>, or </u><u>1/3</u><u>.</u>  (Option B)

Hope this helps :)

8 0
3 years ago
Find the area of a circle with radius, <br> r<br> = 6.87m.<br> Give your answer rounded to 2 DP.
erastovalidia [21]

Answer:

The answer is 148.27

Step-by-step explanation:

I dont know what rounded 2 DP means but rounded to the nearest tenth is 148.3 and rounded to the nearest whole number is 148

7 0
3 years ago
What is x? Show your work.
dedylja [7]

Answer:

x=5.75

Step-by-step explanation:

As you can see, EH and FG are congruent, which means that the measurements must be the same.

You have 4x+5=28

That's already an equation! Now you solve it:

4x+5=28

4x=28-5

4x=23

x=5.75

<em>~Happy Holidays~ :)</em>

3 0
3 years ago
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