All categories

4 years ago

Any one that knows this please help thanks!

Mathematics

1 answer:

yulyashka [42]4 years ago

4 0

Replace the x with 9, and the y with 1.

(x · y²)/-5 becomes (9 · 1²)/-5

1² is just 1, so you're doing 9 × 1 (which is = 9) over -5.

Therefore, your final answer is -9/5.

You might be interested in

Is it just me or does anyone else feel like they made someone offended or confused or something like that when someone replies b

DochEvi [55]

Answer:

I say "ok" to my parents when they ask a question as a joke, but that has happened to me and it's just annoying. If you don't find it funny then don't laugh at all and don't say anything-

4 0

2 years ago

Read 2 more answers

A recent study in a small city stated that the average age of robbery victims was 63.5 years. A random sample of 20 recent victi

Elina [12.6K]

Answer:

The p-value of the test is of 0.3219 > 0.05, which means that at $\alpha = 0.05$ , the average age is not higher than originally believed.

Step-by-step explanation:

A recent study in a small city stated that the average age of robbery victims was 63.5 years. Test if the average age higher than originally believed.

At the null hypothesis, we test that the mean is the believed mean age of 63.5 years, that is:

$H_0: \mu = 63.5$

At the alternate hypothesis, we test if this mean is higher, that is:

$H_1: \mu > 63.5$

The test statistic is:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.

63.5 is tested at the null hypothesis:

This means that $\mu = 63.5$

A random sample of 20 recent victims had a mean of 63.7 years and a standard deviation of 1.9 years.

This means that $n = 20, X = 63.7, s = 1.9$

Test statistic:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{63.7 - 63.5}{\frac{1.9}{\sqrt{20}}}$

$t = 0.47$

P-value of the test and decision:

The p-value of the test is the probability of finding a sample mean above 63.7, which is a right-tailed test, with t = 0.47 and 20 - 1 = 19 degrees of freedom.

With the help of a calculator, this probability is of 0.3219.

The p-value of the test is of 0.3219 > 0.05, which means that at $\alpha = 0.05$ , the average age is not higher than originally believed.

5 0

3 years ago

A wire is attached to an upright pole 6 meters above the ground. If the wire is anchored to the ground 4 meters from the base of

seropon [69]

I believe this is Pythagorean theorem
The equation is
a^2+b^2+=c^2
In this case the equation would be
6^2+4^2=c^2
36+16=c^2
52=c^2
c=7.21110255093

3 0

3 years ago

The equation of a circle is x2 + y2 + 6x + 4y + 10 = 1. What is this equation written in its standard form?

Over [174]

You need to complete the square in x and in y,

$x^{2} + y^{2} + 6x + 4y + 10 = 1$

First, group the x-terms and the y-terms separately.

$x^{2} + 6x + y^{2} + 4y + 10 = 1$

Move the 10 to the right side by subtracting 10 from both sides.

$x^{2} + 6x + y^{2} + 4y = -9$

Now complete the square in x and in y.
The constant you need to add to complete each square is the square of half of the coefficient of the x or y term. Make sure to add the constants to both sides of the equation.

$x^{2} + 6x + 9 + y^{2} + 4y + 4= -9 + 9 + 4$

$(x + 3)^{2} + (y + 2)^{2} = 4$

8 0

3 years ago

PLS HELP!!<br> Find the length of AB.

Georgia [21]

Answer:

About 9.4 units

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers