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Akimi4 [234]
2 years ago
15

The test scores for the exam in statistics class have a mean of 78 points and standard deviation of 9 points. A student is rando

mly selected. Assuming the scores are normally distributed find the probability that the score is more than 95. write statement!
Mathematics
1 answer:
frutty [35]2 years ago
3 0

Answer: the answer is 809

Step-by-step explanation:

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Adding &amp;<br> -100% +0.58 =<br> ???
igor_vitrenko [27]
The answer is -0.42 because -100% is -1 and -1 + .58 is -0.42
4 0
3 years ago
Which equation can be used to solve for c?
AlladinOne [14]
From the given triangle in the photo, the lengths of the sides are 3m and a, the hypotenuse is c. One angle, opposite of 3m is given to be 50 degrees C. The right equation that would solve c is,
                                         sin (50 degrees C) = 3m / c
Thus, the answer is the first choice. 
5 0
3 years ago
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Show that (2xy3 + cos x)dx + (3x2 y2 − sin y)dy = 0 is exact, and find the solution. Find c if y(0) = π
Licemer1 [7]

We're looking for a solution of the form F(x,y)=C. By the chain rule, this solution should have total differential

\mathrm dF=\dfrac{\partial F}{\partial x}\,\mathrm dx+\dfrac{\partial F}{\partial y}\,\mathrm dy=0

and the equation is exact if the mixed second-order partial derivatives of Fare equal, i.e. \frac{\partial^2F}{\partial x\partial y}=\dfrac{\partial^2F}{\partial y\partial x}.

The given ODE is exact, since

\dfrac{\partial(2xy^3+\cos x)}{\partial y}=6xy^2

\dfrac{\partial(3x^2y^2-\sin y)}{\partial x}=6xy^2

Then

\dfrac{\partial F}{\partial x}=2xy^3+\cos x\implies F(x,y)=x^2y^3+\sin x+f(y)

\dfrac{\partial F}{\partial y}=3x^2y^2-\sin y=3x^2y^2+\dfrac{\mathrm df}{\mathrm dy}

\dfrac{\mathrm df}{\mathrm dy}=-\sin y\implies f(y)=\cos y+C

\implies x^2y^3+\sin x+\cos y=C

With y(0)=\pi, we get

\cos\pi=C\implies C=-1

\implies\boxed{x^2y^3+\sin x+\cos y=-1}

6 0
3 years ago
Help ASAP!!!!! Please!!!
rjkz [21]

Answer:

300

Step-by-step explanation:

To find how many carrots, determine how many square units by finding the area. You can calculate the area by finding the area of the inside square 4 by 4 and then adding the area of each triangle on the side.

Area of square = 4*4 = 16 square units

Area of 2 triangles = 2(2*2*1/2)= 2(2) = 4 square units

16+4 = 20 square units.

15 carrots come from 1 square units so 15(20) = 300 carrots

6 0
3 years ago
Can someone please help me?
Korolek [52]
The answer is b because I took it and got it w
6 0
3 years ago
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