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Lina20 [59]
4 years ago
13

Samantha buys candy bars for $0.75 each and increases the price by 40% to sell at the concession stand. Which represents the amo

unt of the price increase?
(A) $ 0.30
(B) $ 0.40
(C) $ 0.50
(D) $ 0.60
Mathematics
2 answers:
tekilochka [14]4 years ago
7 0

Answer:

a.) $0.30 cents is the answer

Step-by-step explanation:

.75 • .4

borishaifa [10]4 years ago
7 0

Answer:

Try to include yes 0.30

Step-by-step explanation:

That is because we have to check the top and the bottom the add and multiply

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Liono4ka [1.6K]
800= 150x+200y

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6 0
3 years ago
Determine whether each of the following functions is a solution of laplace's equation uxx uyy = 0.
ratelena [41]

Both functions are the solution to the given Laplace solution.

Given Laplace's equation: u_{x x}+u_{y y}=0

  • We must determine whether a given function is the solution to a given Laplace equation.
  • If a function is a solution to a given Laplace's equation, it satisfies the solution.

(1) u=e^{-x} \cos y-e^{-y} \cos x

Differentiate with respect to x as follows:

u_x=-e^{-x} \cos y+e^{-y} \sin x\\u_{x x}=e^{-x} \cos y+e^{-y} \cos x

Differentiate with respect to y as follows:

u_{x x}=e^{-x} \cos y+e^{-y} \cos x\\u_{y y}=-e^{-x} \cos y-e^{-y} \cos x

Supplement the values in the given Laplace equation.

e^{-x} \cos y+e^{-y} \cos x-e^{-x} \cos y-e^{-y} \cos x=0

The given function in this case is the solution to the given Laplace equation.

(2) u=\sin x \cosh y+\cos x \sinh y

Differentiate with respect to x as follows:

u_x=\cos x \cosh y-\sin x \sinh y\\u_{x x}=-\sin x \cosh y-\cos x \sinh y

Differentiate with respect to y as follows:

u_y=\sin x \sinh y+\cos x \cosh y\\u_{y y}=\sin x \cosh y+\cos x \sinh y

Substitute the values to obtain:

-\sin x \cosh y-\cos x \sinh y+\sin x \cosh y+\cos x \sinh y=0
The given function in this case is the solution to the given Laplace equation.

Therefore, both functions are the solution to the given Laplace solution.

Know more about Laplace's equation here:

brainly.com/question/14040033

#SPJ4

The correct question is given below:
Determine whether each of the following functions is a solution of Laplace's equation uxx + uyy = 0. (Select all that apply.) u = e^(−x) cos(y) − e^(−y) cos(x) u = sin(x) cosh(y) + cos(x) sinh(y)

6 0
2 years ago
Find the value of x.
svetlana [45]

Answer: 18

Step-by-step explanation:

By the angle bisector theorem, \frac{x}{48} =\frac{12}{32} \longrightarrow x=\boxed{18}

6 0
2 years ago
ms swanson asked question how does knowing the fact 6 times 5 help us find 60 times 500 mario answerd i know 6 times 5 is 30 now
azamat

Answer: See explanation

Step-by-step explanation:

Maria is incorrect as she didn't count the number of zeros properly. After knowing that 6 × 5 = 30, the question is 60×500 which means there are 3 zeros that should be added to the 30 that she got, this will have given her a value of 30,000 which is correct. She write 3000 which is 3 under thousands rather than 30,000 which is 3 under tens of thousands.

3 0
3 years ago
How do you graph x - y < 4
katrin [286]

Answer: y > -4 + x

Step-by-step explanation: graph the inequality by finding the boundary line

8 0
3 years ago
Read 2 more answers
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