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3 years ago

What is -12 as a fraction?

1 answer:

8 0

It will be -12/1 asa improper fraction y’all know these answer y’all be acting stupid I am not talking about u I am talking abou everyone who ask stupid stuff

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Line AB contains points A (8, −4) and B (1, −5). The slope of line AB is....

shutvik [7]

Answer:

$The\ slope\ of\ the\ line\ AB\ is \frac{1}{7} .$

Step-by-step explanation:

Formula for slope

$m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

As the Line AB contains points A (8, −4) and B (1, −5).

Put points value in the above

$m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

$m = \frac{- 5- (-4)}{1 - 8}$

$m = \frac{- 5 + 4}{1 - 8}$

$m = \frac{- 1}{-7}$

$m = \frac{1}{7}$

$Therefore\ the\ slope\ of\ the\ line\ AB\ is \frac{1}{7} .$

7 0

3 years ago

Read 2 more answers

In a survey of 603 adults, 98 said that they regularly lie to people conducting surveys. Create a 99% confidence interval for th

marysya [2.9K]

Answer:

The population proportion is estimated to be with 99% confidence within the interval (0.1238, 0.2012).

Step-by-step explanation:

The formula for estimating the population proportion by a confidence interval is given by:

$\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}$

Where:

$\hat{p}$ is the sample's proportion of success, which in this case is the people that regularly lie during surveys,

$z_{\alpha /2}$ is the critical value needed to find the tails of distribution related to the confidence level,

$n$ is the sample's size.

<u>First</u> we compute the $\hat{p}$ value:

$\hat{p}=\frac{successes}{n}=\frac{98}{603}=0.1625$

<u>Next</u> we find the z-score at any z-distribution table or app (in this case i've used StatKey):

$z_{\alpha /2}=2.576$

Now we can replace in the formula with the obtained values to compute the confidence interval:

$\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}=0.1625\pm 2.576\times\sqrt{\frac{0.1625\times(1-0.1625)}{603}}=(0.1238, 0.2012)$

5 0

3 years ago

The slope of the line whose equation is 6x = 4y - 7 is 1. 4 2. 2/3 3. 3/2

OverLord2011 [107]

Answer:

3/2

Step-by-step explanation:

Divide by 4 to get 6x/4 = 3x/2

4 0

3 years ago

Read 2 more answers

Evaluate -2x square y, if x= -3 and y = -1

statuscvo [17]

Answer:

Step-by-step explanation:

Write the expression

-2x²y

substitute the real values with x=-3 and y= -1

-2(-3²)×(-1)

-2(9)×(-1)

-18×-1

8 0

3 years ago

Read 2 more answers

Plz help me with this practice test this is a practice for our final test I have on Monday

Nana76 [90]

Answer:

Step-by-step explanation:

1) a + $5.92 = $12.29

subtract 5.92 from both sides

a = $6.37

Third option, a = $6.37

2) Multiply the equation by j to get it to the left side

42 = 6j

Divide both sides by 6

42/6 = 7

Answer: 7

3) 9 + 8 = 17 No

9 x 3 = 27 Yes

9 + 3 = 12 No

9 - 5 = 4 Yes

9/3 = 3 No

4) 15.32 + c = 29.00

c = 13.68 is the most expensive you can go, so it would be the soccer ball, since it is the most expensive item under 13.68.

5) 6 x 6 = 36 . False

5 + 6 = 11 . True

6/2 = 3 . True

17 - 6 = 11 True

Hope this helps :)

7 0

2 years ago