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2 years ago

Please help me its confusing

Mathematics

2 answers:

Ghella [55]2 years ago

8 0

Answer:

tax rate is 0.06/per 1$

26.5$ is the cost of a 25$ lamp

Step-by-step explanation:

25x0.06=1.5

25+1.5=26.5

AlladinOne [14]2 years ago

6 0

Answer:

$26.50

Step-by-step explanation:

If tax is 0.72 for 12.00, divide 0.72 by 12 to find the percent.

You get 0.06, or 6% tax rate.

Lamp is $25, 6% of 25 is:

0.06 * 25 = $1.50

Add $1.50 to $25 and the price of lamp is $26.50

Mark as brainliest please

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Give the equation of a line that goes through the point ( − 24 , 2 ) and is perpendicular to the line 8 x + 3 y = − 6 . Give you

Studentka2010 [4]

Answer:

$y=\frac{3}{8}x+11$

Step-by-step explanation:

To find a line that is perpendicular to 8x + 3y = -6 and goes through (-24, 2), lets first find what the line's slope would be.

We can find this by finding the slope of 8x + 3y = -6 and taking the negative reciprocal of it.

We can find the slope of that line by putting it in slope-intercept form:

8x + 3y = -6

Subtract 8x from both sides.

3y = -6 - 8x

Divide both sides by 3.

$y=-\frac{6}{3}-\frac{8}{3}x$

$y=-\frac{8}{3}x-2$

So the slope of that line would be -8/3.

The negative reciprocal of -8/3 would be 3/8.

Now we know that the new line would have to pass through the point (-24, 2). We can use this point and write the equation in point-slope form:

$y-2=\frac{3}{8}(x+24)$

Now lets change this into slope-intercept form. Add 2 to both sides.

$y=\frac{3}{8}(x+24) +2$

Distribute the 3/8.

$y=\frac{3}{8}x+9+2$

Simplify.

$y=\frac{3}{8}x+11$

And now we have our equation in slope-intercept form.

I hope you find this helpful.

5 0

3 years ago

How would I graph this 8x-5y=15?

FromTheMoon [43]

This is linear. 8x-5y=15
-5y=15-8x
Divide -5
Y=8/5x-3.
Start at -3 on y axis and go down 8 points and right 3.

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3 years ago

Read 2 more answers

In a chess tournament, each player plays every other player exactly once. If it is known that 36 games were played, how many pla

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36, the games determine how many players there are b/c each player plays once

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2 years ago

The surface area of a spherical lampshade is 57.76

Kisachek [45]

We are given area of the spherical lampshade = 57.76 \pi square inches.

We know formula of area of a spherical shape:

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Plugging area A= 57.76 π in formula, we get

$57.76\pi= 4\pi r^2$

Dividing both sides by 4π, we get

$\frac{57.76\pi}{4\pi} = \frac{4\pi r^2}{4\pi}$

$14.44 = r^2$

Taking square root on both sides, we get

$\sqrt{14.44} = \sqrt{r^2}$

r =3.8.

<h3>Therefore, the radius of the lampshade is 3.8 inches.</h3>

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4 years ago

The data set below shows the temperature, in degrees Fahrenheit, of a mug of tea compared tothe time in minutes after being pour

Verizon [17]

Given the model of the Exponential Regression:

$y=174.4(0.987)^x$

By definition:

$Residual=Observed\text{ }y\text{ }value-Predicted\text{ }y\text{ }value$

You can see in the table the observed y-values (the temperature in Fahrenheit)

In order to find the Predicted y-values, you need to substitute all the x-values given in the table (the time in minutes) into the equation and then evaluate. You get:

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Now you have these points:

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Therefore, you can plot them on the Coordinate Plane:

By definition, when the residual plot shows a pattern, a non-linear regression model is appropriate for the data. Therefore, the Exponential Regression Model is a good fit.

Hence, the answer is:

- Residual Plot:

- First option.

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