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enot [183]
3 years ago
12

Using a sixteen-sided number cube, what is the probability that you will roll an even number or an odd prime number? Round to th

ree decimals
Mathematics
1 answer:
vfiekz [6]3 years ago
3 0
When there is a probability this OR that, the individual probabilities are added.

probability of rolling an even number is 1/2

prime numbers between 1-16 are {2, 3, 5, 7, 11, 13} of these five are odd.

probability of rolling an odd prime number
5/16

probability of even OR odd prime
1/2 + 5/16
8/16 + 5/16 = 13/16

13/16 = 0.825


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A rectangular prism has a volume of 729ft^3. The length width and height are the same. What is the length of each side
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Answer:

9 feet

Step-by-step explanation:

If each side is the equivalent, each side of the prism is the cube root of 729

Cube root of 729 is 9

Each side is 9 feet long

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Whats the question tho
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Please help with the following problem asap!!
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8^7

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\dfrac{8^{15}}{8^7 \cdot 8} =

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= \dfrac{8^{15}}{8^7 \cdot 8^1}

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4 0
3 years ago
Evaluate the surface integral. s x ds, s is the part of the plane 18x + 9y + z = 18 that lies in the first octant.
IceJOKER [234]
In the first octant, the given plane forms a triangle with vertices corresponding to the plane's intercepts along each axis.

(x,0,0)\implies 18x+9\cdot0+0=18\implies x=1
(0,y,0)\implies 18\cdot0+9y+0=18\implies y=2
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Now that we know the vertices of the surface \mathcal S, we can parameterize it by

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\mathrm dS=\|\mathbf s_u\times\mathbf s_v\|\,\mathrm du\,\mathrm dv=2\sqrt{406}(1-v)\,\mathrm du\,\mathrm dv

With respect to our parameterization, we have x(u,v)=(1-u)(1-v), so the surface integral is

\displaystyle\iint_{\mathcal S}x\,\mathrm dS=2\sqrt{406}\int_{u=0}^{u=1}\int_{v=0}^{v=1}(1-u)(1-v)^2\,\mathrm dv\,\mathrm du=\frac{\sqrt{406}}3
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