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lawyer [7]
3 years ago
10

On a math test, 4 out of 20 students received an A. Two students are randomly selected without replacement, and the first studen

t has an A. What is the probability of the second student having an A?
Mathematics
2 answers:
Angelina_Jolie [31]3 years ago
8 0
A step by step equation, should be 20% chance
padilas [110]3 years ago
4 0

Answer:

Step-by-step explanation:

The answer should be 20% chance

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A purchaser paid $1,539.13 for a computer system that originally cost $1,215.91. If the markup was 21% of the $1,539.13 selling
liubo4ka [24]

Answer:

$1272.008264

Step-by-step explanation:

If the mark-up was 21%, then the final price is 121% of the original price.  Simply divide $1,539.13 by 1.21 to get the original price of $1272.008264

7 0
3 years ago
WIL GIVE BRAINLIEST PLEASE!!!
Aloiza [94]

Answer:

400

Step-by-step explanation:

just took the test lol

3 0
2 years ago
The weights of certain machine components are normally distributed with a mean of 8.04 g and a standard deviation of 0.08 g. Fin
NISA [10]

Answer:

The bottom 3 is separated by weight 7.8896 g and the top 3 is separated by weight 8.1904 g.

Step-by-step explanation:

We are given that

Mean, \mu=8.04 g

Standard deviation, \sigma=0.08g

We have to find the two weights that separate the top 3% and the bottom 3%.

Let x be the weight of  machine components

P(Xx_2)=0.03

P(X

=0.03

From z- table we get

P(Z1.88)=0.03

Therefore, we get

\frac{x_1-8.04}{0.08}=-1.88

x_1-8.04=-1.88\times 0.08

x_1=-1.88\times 0.08+8.04

x_1=7.8896

\frac{x_2-8.04}{0.08}=1.88

x_2=1.88\times 0.08+8.04

x_2=8.1904

Hence, the bottom 3 is separated by weight 7.8896 g and the top 3 is separated by weight 8.1904 g.

5 0
2 years ago
If f(x) = x3, which of the following describes the graph of f(x − 3)?
ikadub [295]
You need a graph to go with it
6 0
3 years ago
Need heals please ❤️
Neko [114]

B: Even

B is the answer



8 0
3 years ago
Read 2 more answers
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