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3 years ago

Which of the following is not a polyhedron Cylinder, prism, cone, or pyramid?

Mathematics

1 answer:

slamgirl [31]3 years ago

7 0

Cylinder
hope this helped

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Let X be the number of Heads in 10 fair coin tosses. (a) Find the conditional PMF of X, given that the first two tosses both lan

inn [45]

Answer:

Follows are the solution to the given point:

Step-by-step explanation:

For option A:

In the first point let z be the number of heads which is available on the first two trails of tosses so, the equation is:

$P(X=k | z=2 ) = \begin{pmatrix} 10-2\\ k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k}$

$= \begin{pmatrix} 8\\k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k} \ \ \ \ \ \ \ \ \ \ \\\\$

$k= 2,3..........10$ For option B:

$P(X=k | X \geq 2 ) = \sum^{10}_{i=2} \begin{pmatrix} 10-i\\ k-i\end{pmatrix} (\frac{1}{2})^{k-i} (\frac{1}{2})^{10-k}$

$k= 2,3, 4.........10$

8 0

3 years ago

The slope of a line parallel to the graph of 4x-5y=12

Leya [2.2K]

Parallel lines have the same slope.

$4x-5y=12 \\ -5y=-4x+12 \\ y= \frac{4}{5}x- \frac{12}{5} \\ \\ slope:\frac{4}{5}$

6 0

3 years ago

Simplify <br> -4x+2x2-x2+5-3x

Serga [27]

Answer:

9 - 7x - x²

Step-by-step explanation:

-4x+2x2-x²+5-3x = -4x-3x+2x2+5-x²

I arranged the like terms together so it is easier to do the calculations.

-4x-3x+2x2+5-x² = -7x+4+5-x²

Simplify.

-7x+4+5-x² = 9-7x-x²

3 0

3 years ago

Read 2 more answers

What is the inequality shown here

IgorLugansk [536]

Answer:

$- 3 \leqslant x < 2$

I hope I helped you^_^

5 0

3 years ago

What is the value of the expression shown below? 8 + (7 + 1) 2 ÷ 4 ⋅ 2

Leni [432]

The answer is 10

8+(8)2÷4·2
8+16÷4·2 4·2=8 then 16÷8
8+2=10

just use PEMDAS

6 0

3 years ago