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2 years ago

Sorry if you can't see it correctly !! the question is-

Mathematics

2 answers:

Anna35 [415]2 years ago

8 0

So you would put 9 in for both of the D’s . Which would be 3(9) + 9^2. You will simply it and it’ll be 27+81 which is 108. THE ANSWER IS 108

Rzqust [24]2 years ago

3 0

–28

Step-by-step explanation:

9 + 3(10 ÷ 2) – 52

Solve parentheses first: 9 + 3(5) – 52

Order of Operations says to solve multiplication next: 9 + 15 – 52

Simplify the addition: 24 – 52

Subtract 52 – 24 and negate the answer: –28

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True or false.

valkas [14]

Answer:false

Step-by-step explanation:no constant rate of change in y and x values

8 0

2 years ago

Please help this is timed

agasfer [191]

Answer: y= -2 (x+1)

Step-by-step explanation:

this would be the “inverse” of the original equation making them cross at exactly 1 point

7 0

2 years ago

Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burglar is 2.5 years. A study wa

4vir4ik [10]

Using the z-distribution, it is found that since the test statistic is greater than the critical value, it can be concluded that the mean length of jail time has increased.

At the null hypothesis, it is tested if the mean length of jail time is still of 2.5 years, that is:

$H_0: \mu = 2.5$

At the alternative hypothesis, it is tested if it has increased, that is:

$H_1: \mu > 2.5$

We have the standard deviation for the population, thus, the z-distribution is used. The test statistic is given by:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

The parameters are:

$\overline{x}$ is the sample mean.
$\mu$ is the value tested at the null hypothesis.
$\sigma$ is the standard deviation of the sample.
n is the sample size.

For this problem, the values of the parameters are: $\overline{x} = 3, \mu = 2.5, \sigma = 1.5, n = 26$

Hence, the value of the test statistic is:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{3 - 2.5}{\frac{1.5}{\sqrt{26}}}$

$z = 1.7$

The critical value for a right-tailed test, as we are testing if the mean is greater than a value, with a significance level of 0.05, is of $z^{\ast} = 1.645$

Since the test statistic is greater than the critical value, it can be concluded that the mean length of jail time has increased.

A similar problem is given at brainly.com/question/24166849

5 0

2 years ago

Josue's overtime pay is $6 an hour more than his regular pay. He worked 7 hours at his regular wage and 5 hours at his overtime

adell [148]

The answer is: 7x + 5 (x + 6) = 138 7x + 5x + 30 = 138 12x = 138 - 30 12x = 108 x = 9 $ = regular pay and overtime = 9 + 6 = 15 $...

5 0

2 years ago

What is the product in simplest form? State any restrictions on the variable. Please show your work.

mote1985 [20]

You have the following expressions given in the problem above:

(y^2/y-3)(y^2-y-6/y^2+y)

By applying the exponents properties, you can simplify it, as it shown below:

(y^2/y-3)(y^2-y-6/y^2+y)
(y^4-y^3-6y^2)/(y^3+y^2-3y2-3y)
(y^4-y^3-6y^2)/(y^3-2y2-3y)

Then, you have:
y^2(y^2-y-6)/y(y^2-2y-3)
(y^2-y-6)/(y^2-2y-3)

The answer is: (y^2-y-6)/(y^2-2y-3)

5 0

2 years ago

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