The Cowboys have won 3 out of 10 games. What<br> percent of the total games have the Cowboys won?

Gnom [1K]

Answer:

x is equal to negative one, and y is equal to negative four.

Step-by-step explanation:

You can do this by solving one of the equations by either x or y, then substituting it into the other. Let's solve the second one for y:

$2y = 3x - 5\\y = \frac{3x - 5}{2}$

Now we'll substitute that into the first equation:

$9x - 2y = -1\\9x - 2(\frac{3x - 5}{2}) = -1\\9x - 3x + 5 = -1\\6x + 5 = -1\\6x = -6\\x = -1$

So we now know that x is equal to -1. We can simply substitute that into one of the original equations to find y:

$2y = 3x - 5\\2y = 3(-1) - 5\\2y = -3 - 5\\2y = -8\\y = -4$

We now know that x is equal to -1, and y is equal to -4. We can also check our answer by plugging that -4 into the other equation, and see if we still get -1:

$9x - 2y = -1\\9x - 2(-4) = -1\\9x + 8 = -1\\9x = -1 - 8\\9x = -9\\x = -1$

So we know that our answer is correct.

3 0

3 years ago

Shaun pays 8% per year on a loan of £3200.

kozerog [31]

Step-by-step explanation:

Principal loan amount x Interest rate x Time (aka Number of years in term) = Interest.

8% = 0.08

3200 × 0.08 × 7 = 1,792 £

4 0

2 years ago

explain why we cannot construct such an interval using the normal approximation. what might go wrong if we constructed the confi

Lyrx [107]

Null Hypothesis, $H_{0}$ : The heart transplant operation had no impact on the patient's survival rates. Alternative Hypothesis, $H_{A}$ : It was asserted that recipients of heart transplants had a higher chance of surviving than recipients of organs from other donors.

The large distribution from binomial, Poisson, etc. is approximated by the normal distribution. Furthermore, the variables are discrete and few, and we are working with counted data rather than real observations. Chi-square distribution should be used in the current scenario. We can determine if the two groups are the same or different by using the chi-square test. As a result, a confidence interval cannot be created.

In other words, the Null Hypothesis is true if the average for the two groups (control and treatment) is equal. In the alternative theory, The averages for the two groups (control and treatment) are different.

To learn more about confidence intervals:

brainly.com/question/17212516

#SPJ4

8 0

1 year ago

If you can help me with Slope Intercept plz help me

11Alexandr11 [23.1K]

Answer:

y = 6/5x - 2 (or y = 1.2x - 2)

Step-by-step explanation:

To find the slope-intercept form ( = mx + b) you need to rearrange the equation of the line:

Step 1 - Add 18x to both sides