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Furkat [3]
3 years ago
5

How many solutions 2x−y=1 −6x+3y=2 PLZZ HELP REALLY URGENT

Mathematics
1 answer:
meriva3 years ago
5 0
There are no solutions
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How to find the indicated probability to this problem? This is a homework practice. Show your work. Thanks!
AlladinOne [14]

You want to find P(\text{no exercise}\mid\text{woman}); that is, given that you randomly choose from the pool of women, the probability that she does not exercise.

By definition of conditional probability,

P(\text{no exercise}\mid\text{woman})=\dfrac{P(\text{no exercise AND woman})}{P(\text{woman})}

496 of the total 1026 people are woman, and 341 of the 1026 people are women and do not exercise, so

P(\text{no exercise}\mid\text{woman})=\dfrac{\frac{341}{1026}}{\frac{496}{1026}}=\dfrac{341}{496}=0.6875\approx0.688

A simpler way of doing this is to look at what's called the marginal distribution of women in the table. Basically this comes down to ignoring all but the data pertaining to the women. There's a total of 496 women, and 341 of them do not exercise. So the probability that a given woman does not exercise is 341/496.

7 0
3 years ago
Students were asked to choose their favorite sport
r-ruslan [8.4K]

Answer:

5/9-1/9=4/9

Step-by-step explanation:

5/9 chose basketball or soccer. 1/9 chose basketball.

<h3>answer is 4/9</h3>
4 0
3 years ago
Martina purchases a bookcase at $91. With sales tax, the total comes out to $94.64. What is the sales tax percentage?
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3 years ago
A pole is used to support an observation platform. The top of the pole is secured by two guy wires, one 18 and the other 21 feet
Harman [31]
Let A be the point on the ground to with the 18 foot guy is anchored and D the point on the ground to with the 21 foot guy is anchored.

We can conclude that the <span>the two wires at the points where they are anchored are 21 feet apart. Check the procedures in the picture attached.</span>

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3 years ago
What is 2x squared plus 7x minus 15= 0
OverLord2011 [107]

Answer:

Step-by-step explanation:

The answer is 0

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3 years ago
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