Negative five is three more than twice a number(n). what is n?

We are given the cost of the product along with the markup percentage. The markup is how the store makes a profit. To figure out the markup price, simply multiply the "cost to store" by 100% plus the markup percent.

So the markup prices per store is:

A = 162 * 1.4 = $226.80
B = 155 * 1.3 = $201.50
C = 160 * 1.25 = $200.00

Clearly, the best deal is store C. So in order to choose store A, we want to pay less than the price of Store C, $200. So if Store A cost $199.99, then we would purchase there instead of Store C.

Therefore, $226.80 - $199.99 = $26.81
If Store A offered a discount of $26.81, we would purchase from Store A.

$26.81/$226.80 = 0.1182

So we would need a discount of 11.82% from Store A.

7 0

3 years ago

Find the regression equation, letting the first variable be the predictor (x) variable. Using the listed lemon/crash data, wh

kakasveta [241]

The regression analysis evaluates the amount of relationship that exists

between the variables in the analysis.

The regression equation is; $\underline{\overline y = -0.00255 \cdot \overline x + 16.47268}$

The prediction is worthwhile because it gives an idea of the observed Crash Fatality Rate and it is therefore approximately correct.

Reasons:

First part;

The given data is presented as follows;

$\begin{tabular}{|cc|c|}Lemon Imports (x) &&Crash Fatality Rate\\232&&16\\268&&15.7\\361&&15.4\\472&&15.5\\535&&15\end{array}\right]$

The least squares regression equation is; $\overline y = b \cdot \overline x + c$

Where;

$b = \mathbf{\dfrac{\sum \left(x_i - \bar x\right) \times \left(y_i - \bar y\right) }{\sum \left(x_i - \bar x\right )^2 }}$

$\overline y$ = The mean crash fatality = 15.52

$\overline x$ = The mean lemon import = 373.6

Therefore;

$b = \dfrac{-171.36 }{67093.2 } = -0.00255$

c = $\overline y$ - b· $\overline x$ = 15.52 - (-0.00255)×373.6 = 16.47268

Therefore;

The regression equation is $\underline{\overline y = -0.00255 \cdot \overline x + 16.47268}$

Second part;

When the imports is 425 metric tons of lemon, we have;

$\overline y$ = -0.00255 × 425 + 16.47268 = 15.38893 ≈ 15.4

Therefore;

When the import is 425 metric tons, the Crash Fatality Rate ≈ 15.4

Given that the predicted value is between the values for 268 and 535, we

have that the prediction is approximately correct or worthwhile

<u>The prediction is worthwhile</u>

Learn more about regression equation here:

brainly.com/question/5586207

8 0

1 year ago

What is the value of x in the right triangle below? Show your work and round your answer to the nearest hundredth.

navik [9.2K]

The length of the hypothenuse or the value of x is equal to 19.53

Data;

hypothenuse = x
adjacent = 11.2
opposite = 16

<h3>Pythagoras's Theorem</h3>

To solve this problem, we have to use Pythagoras's theorem which is used to find the missing side in a right angle triangle if we have at least two sides.

The formula for this is

$x^2 = y^2 + z^2\\$

Let's substitute the values and solve for the missing side

$x^2 = 16^2 + 11.2^2 \\x^2 = 256 + 125.44\\x^2 = 381.44\\x = \sqrt{381.44} \\x = 19.53$

The length of the hypothenuse or the value of x is equal to 19.53

Learn more Pythagoras theorem here;

brainly.com/question/3317136

6 0

2 years ago