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2 years ago

9

What is the answer to this? -6+13=

1 answer:

Ket [755]2 years ago

3 0

Answer: -6+13=7

Step-by-step explanation:

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Solve for b .<br><br> -9 b = 27<br><br> b =

saul85 [17]

Final Answer: $b = -3$

Steps/Reasons/Explanation:

Question: Solve for $b$ . $-9 b = 27$ . $b$ = ?

<u>Step 1</u>: Divide both sides by $-9$ .

$b = -\frac{27}{9}$

<u>Step 2</u>: Simplify $\frac{27}{9}$ to $3$ .

$b = -3$

~I hope I helped you :)~

5 0

2 years ago

Read 2 more answers

Trials in an experiment with a polygraph include results that include cases of wrong results and cases of correct results. Use a

hram777 [196]

Answer and Step-by-step explanation:

This is a complete question

Trials in an experiment with a polygraph include 97 results that include 23 cases of wrong results and 74 cases of correct results. Use a 0.01 significance level to test the claim that such polygraph results are correct less than 80% of the time. Identify the nullhypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method. Use the normal distribution as an approximation of the binomial distribution.

The computation is shown below:

The null and alternative hypothesis is

$H_0 : p = 0.80$

$Ha : p < 0.80$

$\hat p = \frac{x}{ n} \\\\= \frac{74}{97}$

= 0.7629

Now Test statistic = z

$= \hat p - P0 / [\sqrtP0 \times (1 - P0 ) / n]$

$= 0.7629 - 0.80 / [\sqrt(0.80 \times 0.20) / 97]$

= -0.91

Now

P-value = 0.1804

$\alpha = 0.01$

$P-value > \alpha$

So, it is Fail to reject the null hypothesis.

There is ample evidence to demonstrate that less than 80 percent of the time reports that these polygraph findings are accurate.

5 0

3 years ago

Parallelogram JKLM has vertices J(-1, 6), K(0, 9), L(6, −3), and M(3, −3). What is the coordinates of the image if the parallelo

Digiron [165]

Answer: $(\dfrac13,-2),\ (0,-3),\ (-2,1),\ (-1,1) .$

Step-by-step explanation:

Transformation rule for dilation:

$(x,y)\to(kx,ky)$ , where k = scale factor

Given : Scale factor = $-\dfrac13$

Parallelogram JKLM has vertices J(-1, 6), K(0, 9), L(6, −3), and M(3, −3)

Vertices after dilation:

$(-1,6)\to(-1\times\dfrac{-1}{3},6\times\dfrac{-1}{3})=(\dfrac13,-2)$

$(0,9)\times(0\times-\dfrac13,9\times-\dfrac13)=(0,-3)$

$(6,-3)\to(6\times-\dfrac13,\ -3\times-\dfrac13)=(-2,1)$

$(3,-3)\to (3\times-\dfrac13,\ -3\times-\dfrac13)=(-1,1)$

Hence, the coordinates of the image if the parallelogram = $(\dfrac13,-2),\ (0,-3),\ (-2,1),\ (-1,1) .$

8 0

2 years ago

Plz plz help help help plz plz help plz

uranmaximum [27]

Answer:

since your adding to hours each time youll have 11, then the answer would be d the last one :)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

In Exercise sketch the graph of the function.<br> f(x) = ex + 3

Tju [1.3M]

Answer:

$f(x) = e^x + 3$

Step-by-step explanation:

We are given the following function in the question:

$f(x) = e^x + 3$

We have to graph this function.

Properties of given function are:

e is a constant and have a value of e = 2.718281828....
The function does not pass through origin
At x = 0, f(x) = 4
The domain for the given function is all real numbers.
The range of the given function is $(3, \infty)$

The attached image shows the graph for given function.

5 0

2 years ago