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cestrela7 [59]
3 years ago
8

Please just answer at least one ​

Mathematics
1 answer:
Tomtit [17]3 years ago
6 0
Answer: (4) d=112 (7) 2.75 or 2 3/4

explanation: pictured below

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On a math test, the highest grade is 38 points higher than the lowest grade. Which of the following expressions represents the a
Alinara [238K]

Answer:

the answer is b I got it right!

5 0
3 years ago
Read 2 more answers
14. Isaiah bought a total of 22 pieces of candy. The tootsie rolls cost 3 cents each and the jolly ranchers cost 5
wolverine [178]

Answer:

Tootsie = 10

Jolly Ranchers = 12

Step-by-step explanation:

t= .03

j= .05

You would want 10 tootsies and 12 jolly ranchers

t x j= .90

Insert the previous term into the answer and you can always find it.

8 0
3 years ago
Read 2 more answers
I don’t get how to do it please help????
bonufazy [111]

To put this into simpler terms, well simplier for me anyways, Emma is dividing 9 inches of paper into 2/5, or .4, inches of paper.

That being said, we now just need to divide 9 by 2/5 or .4

We get 22.5

So Emma will be able to make 22 strips since we can't have half a strip. (Well, we could, but it would be small than what we need)


Any questions?

7 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
The sector of a circle with a diameter of 20 inches has a central angle measure of 36°. What is the area of the sector?
Bogdan [553]
We need the radius to find the area of sector.

radius = 20/2 = 10

Area of sector:

πr²(x/360) = x is the central angle in degrees.
π(10)²(36/360)
10π in²

Hope this helps :)
4 0
4 years ago
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