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dybincka [34]
3 years ago
14

In your sock drawer, you have 12 blue socks and 12 yellow socks. It is dark in the morning when you were getting dressed, and yo

u can’t see the color of the socks. What is the probability of randomly picking a yellow sock?
A.) 1/23
B.) 1/2
C.) 1/12
D.) 1/11
E.) 1/24
Mathematics
1 answer:
Contact [7]3 years ago
6 0

Answer:

1/2

Step-by-step explanation:

There are 12+12 = 24 socks in the drawer

P(yellow) = number of yellow socks/ total socks

                = 12/24

                =1/2

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f x + y is rational, must x and y each be rational? A) Yes; because the sum of rationals is rational. B) No; because the sum of
Rudik [331]
The answer is D) Yes; because x and y must be integers, and integers are rational.
7 0
3 years ago
Find a nonzero vector orthogonal to the plane through the points: ????=(0,0,1), ????=(−2,3,4), ????=(−2,2,0).
ser-zykov [4K]

Answer:

The nonzero vector orthogonal to the plane is <-9,-8,2>.

Step-by-step explanation:

Consider the given points are P=(0,0,1), Q=(−2,3,4), R=(−2,2,0).

\overrightarrow {PQ}==

\overrightarrow {PR}==

The nonzero vector orthogonal to the plane through the points P,Q, and R is

\overrightarrow n=\overrightarrow {PQ}\times \overrightarrow {PR}

\overrightarrow n=\det \begin{pmatrix}i&j&k\\ \:\:\:\:\:-2&3&3\\ \:\:\:\:\:-2&2&-1\end{pmatrix}

Expand along row 1.

\overrightarrow n=i\det \begin{pmatrix}3&3\\ 2&-1\end{pmatrix}-j\det \begin{pmatrix}-2&3\\ -2&-1\end{pmatrix}+k\det \begin{pmatrix}-2&3\\ -2&2\end{pmatrix}

\overrightarrow n=i(-9)-j(8)+k(2)

\overrightarrow n=-9i-8j+2k

\overrightarrow n=

Therefore, the nonzero vector orthogonal to the plane is <-9,-8,2>.

8 0
3 years ago
In 2013, a research company found that smartphone shipments (units sold) were up 32.7% worldwide from 2012, with an expectation
timofeeve [1]

Answer:

We're looking for a,b such that

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3 0
3 years ago
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Answer

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Explanation

We are given that, in January, she used 3/5 of the amount of oil she used in February.

We are also given that, she used 2/3 litres of oil in February.

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6 0
2 years ago
Read 2 more answers
I need help with this, I’m confuse
masha68 [24]

\frac{5}{3}  +  \frac{2}{3}  =  \frac{7}{3}
Because the denominators are same, you can just add the numerators.
7 0
3 years ago
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