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harkovskaia [24]
3 years ago
9

A psychology class consists of 14 males and 36 females. if the professor selects name from the class list using random sampling,

what is the probability that the first student selected will be a female
Mathematics
1 answer:
Pavel [41]3 years ago
3 0
The total number of students is 14+36, or 50. So the chance that a selected student is female is 36/50, or 18/25.
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Please help math graphs
Hoochie [10]

what you put is right


6 0
3 years ago
Help and explain explain !!!!!!!!!!
tigry1 [53]

Answer:

x=-1\text{ or }x=11

Step-by-step explanation:

For a=|b|, we have two cases:

\begin{cases}a=b,\\a=-b\end{cases}

Therefore, for 18=|15-3x|, we have the following cases:

\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}

Solving, we have:

\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}.

Therefore,

\implies \boxed{x=-1\text{ or }x=11}

3 0
3 years ago
Ricardo spends 2 2/3 hours practicing soccer on
ladessa [460]

Answer:

10 7/12 hours

Step-by-step explanation:

so we have to multiply 2 2/3 twice since he does that many hours for 2 days. We then have to multiply 1 3/4 three times since he does that many hours for 3 days. Lets first convert 2 2/3 into a mixed fraction. 2 2/3 = 3 times 2 =6 +2=8 over 3. 1 3/4=4 times 1=4+3=7 over 4. 8/3 times 2 equals 16/3 which eqials

5 1/3 hours. 7/4 times 3 equals to 21/4 which equals to 5 1/4. Lets now add

5 1/3 and 5 1/4. 5+5=10 but the fractions are not the same. Therefore, we need to make it to a common denominator. 4 times 3 equals to 12 so 4/12 plus 3/12 equals 7/12. Final answer equals to 10 7/12.

3 0
3 years ago
At a​ school, 102 students play at least one sport. This is 40​% of the students at the school. How many students are at the​ sc
viktelen [127]
To get from 40% to 100%, divide by 2 and multiply by 5.
I.e. 40/2 = 20
20 x 5 = 100%

Do the exact same for 102
102/2 = 51
51 x 5 = 255 students
5 0
3 years ago
Read 2 more answers
N+5n-3c PLS anyone I need this for my test And I need it right now pls
iVinArrow [24]

<em><u>Answer:</u></em>

I'm assuming this is a <em>combining like terms</em> question, in which case the answer would be 6n - 3c.

<u><em>Step-by-step explanation:</em></u>

I'm guessing your teacher wants you to combine the like terms, and 1n plus 5n = 6n, minus 3c is the answer, which is 6n - 3c. If your teacher wanted you to solve for each variable, you can't do that because you don't have enough information, and there's an infinite number of solutions.

<em>Hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day, and good luck on your test. :)</em>

7 0
3 years ago
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