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3 years ago

How do you do long division for something like question 2. ??

Mathematics

2 answers:

RUDIKE [14]3 years ago

8 0

Answer:

You need to divide them all separately and then add the answers together to get the correct answer

elena-14-01-66 [18.8K]3 years ago

7 0

Answer:

3.535

Step-by-step explanation:

3535. and take the decimal 3 units to the left and you will get 3.535

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The ratio of the measures of the sides of a triangle is 9:12:5. If the perimeter of the triangle is 130 feet find the measures o

Alla [95]

45 feet, 60 feet, 25 feet

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3 years ago

Read 2 more answers

Find the measure of angle y. Round your answer to the nearest hundredth. (please type the numerical answer only) (6 points)

mamaluj [8]

Answer:

x = 35.68533471.. degrees

Step-by-step explanation:

5-7-12 right triangle

According to Soh Cah Toa, the angle you are looking for is sin(x) = 7/12. Solve.

7 0

3 years ago

Which of the following expressions is the conjugate of a complex number with −5 as the real part and 4i as the imaginary part?

makvit [3.9K]

"−5 − 4i" is the one among the following expressions given in the question that <span>is the conjugate of a complex number with −5 as the real part and 4i as the imaginary part. The correct option among all the options that are given in the question is the third option. I hope that this is the answer that has helped you.</span>

3 0

3 years ago

A practice law exam has 100 questions, each with 5 possible choices. A student took the exam and received 13 out of 100.If the s

Cloud [144]

Answer:

$z=\frac{13-20}{4}=-1.75$

Assuming:

H0: $\mu \geq 20$

H1: $\mu$

$p_v = P(Z$

Step-by-step explanation:

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Let X the random variable of interest (number of correct answers in the test), on this case we now that:

$X \sim Binom(n=100, p=0.2)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

We need to check the conditions in order to use the normal approximation.

$np=100*0.2=20 \geq 10$

$n(1-p)=20*(1-0.2)=16 \geq 10$

So we see that we satisfy the conditions and then we can apply the approximation.

If we appply the approximation the new mean and standard deviation are:

$E(X)=np=100*0.2=20$

$\sigma=\sqrt{np(1-p)}=\sqrt{100*0.2(1-0.2)}=4$

So we can approximate the random variable X like this:

$X\sim N(\mu =20, \sigma=4)$

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean". The letter $\phi(b)$ is used to denote the cumulative area for a b quantile on the normal standard distribution, or in other words: $\phi(b)=P(z$

The z score is given by this formula:

$z=\frac{x-\mu}{\sigma}$

If we replace we got:

$z=\frac{13-20}{4}=-1.75$

Let's assume that we conduct the following test:

H0: $\mu \geq 20$

H1: $\mu$

We want to check is the score for the student is significantly less than the expected value using random guessing.

So on this case since we have the statistic we can calculate the p value on this way:

$p_v = P(Z$

5 0

3 years ago

Use an associative property to write an equivalent expression

Angelina_Jolie [31]

Answer:

6y+3xy

Step-by-step explanation:

You can combine the y's together to get this answer

3 0

3 years ago