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nikitadnepr [17]
3 years ago
6

which of the following is a well-defined set? A. the set of big people B. the set of happy pepole C. the set prime numbers​

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
4 0
Answer: c I think if I’m wrong report my comment
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A school debate team has 4 girls and 6 boys. A total of 3 of the team members will be chosen to participate in the district deba
Varvara68 [4.7K]
The probability that 1 girl and 2 boys will be selected is given by:
P(1\ boy,\ 2\ girls)=\frac{4C1\times6C2}{10C3}=\frac{1}{2}
The correct answer choice is B. 1/2.
6 0
3 years ago
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The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 5 to 3 . If there were
dlinn [17]

\bf \begin{array}{ccll} yes&no\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 5&3\\ y&2829 \end{array}\implies \cfrac{5}{y}=\cfrac{3}{2829}\implies \cfrac{5\cdot 2829}{3}=y\implies 4715=y \\\\\\ \stackrel{\textit{total number of votes}}{yes+no}\implies 4715+2829\implies 7544

5 0
3 years ago
Which set of ordered pairs is on the graph of the function below? y = 2x
oksian1 [2.3K]

Answer:

I hope I'm right but not totally sure (0,0) and (1,2)

Step-by-step explanation:

Graph the line using the slope and y-intercept, or two points.

Slope: 2

y-intercept: 0

x  y

0 0                       <<<<< That's supposed to be a chart

1   2

7 0
3 years ago
What is the answer to -2(7-y)+4=-
pashok25 [27]

Answer:

2y-10

Step-by-step explanation:

-2(7-y)+4

distribute:

=(-2)(7)+(-2)(-y)+4

= -14+2y+4

Combine like terms:

= -14+2y+4

=(2y)+(-14+4)

= 2y+-10

8 0
3 years ago
Elevator Safety Example 2 referred to an elevator with a maximum capacity of 4000 lb. When rating elevators, it is common to use
MrRa [10]

Answer:

0.7019; no, it does not appear to be safe.

Step-by-step explanation:

We want to find P(X > 185).  However, in a z table, we are given the area under the curve to the left of the value; this means we want to find

1 - P(X ≤ 185)

The z score for the mean of a sample is given by

z=\frac{\bar{X}-\mu}{\sigma \div \sqrt{n}}

For this situation, the mean, μ, is 189 and the standard deviation, σ, is 39.  Our sample size, n, is 27.  This gives us

z = (185-189)/(39÷√27) = -4/(39÷5.1962) = -4/7.5055 = -0.53

Using a z table, we see that the area under the curve to the left of this value is 0.2981.  This means our probability is

1-0.2981 = 0.7019.

8 0
3 years ago
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