Real fourth roots of 256

An ongoing promotion at a department store gives customers 20\%20%20, percent off the portion of their bill that is over \$100$1

gtnhenbr [62]

The equation best models the situation 100 + 0.8(x - 100) = 250.

The correct option is (D)

<h3>What is equation?</h3>

An equation in math is an equality relationship between two expressions written on both sides of the equal to sign.

The complete question is:

An ongoing promotion at a department store gives customers 20% off the portion of their bill that is over $100. Ruby's total bill at the department store after the promotion has been applied is $250. If x represents the amount of money Ruby would have spent on the same purchase at the department store without the promotion, which of the following equations best models the situation?

A. 0.2x + 100 = 250

B. 0.8x + 100 = 250

C. 100 + 0.2(x - 100) = 250

D. 100 + 0.8(x - 100) = 250

Given:

Department store gives 20 % off the portion of the bill that is over 100 dollars.

Total bill = 250

let x is the amount of money she would have spent without the promotion.

Then, cost after discount applies = 0.8 ( x - 100 ).

Hence, the equation is 100 + 0.8 (x - 100) = 250.

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7 0

2 years ago

Please help!!!! its math I will give you more points if you answer correctly and brainly

Sauron [17]

Answer:

All four lines are perpendicular

Step-by-step explanation:

Lines 1 and 2 are parallel

y+8x=−5;x+1/6y=−5

Lines 2 and 3 are parallel

x+1/6y=−5;y=−6x−7

Lines 1 and 4 are perpendicular they intercept

x+1/6y=−5;y+3=1/8(x−1)

All four lines are perpendicular

line 4 is perpendicular to all other lines

3 0

3 years ago

Which ordered pair (x, y) can be added to the table so that y is still a function of x?

Ymorist [56]

Answer:

B. (3, -2)

Step-by-step explanation:

For the table to still be a function, any added pair should not result into any x-value having different y-values. This is because, for the table to remain a function, no x-value should give different y-values. That is, each x-value must have exactly one y-value.

❌If we add the ordered pair in option A, (6, 4) to the table, y is no longer a function of x, because we would be having an x-value of 6 giving us different y-values of -13 and 4.

✅If we add the ordered pair in option B, (3, -2) to the table, y would remain a function of x, because we would be having each x-value having exactly one y-value.

❌If we add the ordered pair in option C, (0, 4) to the table, y is no longer a function of x, because we would be having an x-value of 0 giving us different y-values of -1 and 4.

❌If we add the ordered pair in option D, (-2, 5) to the table, y is no longer a function of x, because we would be having an x-value of -2 giving us different y-values of 3 and 5.

The answer is B. (3, -2).

8 0

3 years ago

Use the chart below to answer the questions:Which of these countries has the greatest population density? Which has the least? P

Korolek [52]

<em>Answer</em>

Denmark has the greatest population density

Ghana has the least population density

<em>Step-by-step explanation</em>

To find the population density we have to divide the population of each country by its area, as follows:

$\begin{gathered} \text{ Population density of Indonesia }=\frac{203,479,000}{1,904,569}\approx106.8\text{ }\frac{people}{sq\text{ }km} \\ \text{Populat}\imaginaryI\text{on dens}\imaginaryI\text{ty of Denmark}=\frac{5,248,000}{42,077}\approx124.7\text{ }\frac{people}{sq\text{ k}m} \\ \text{Populat}\mathrm{i}\text{on dens}\mathrm{i}\text{ty of Ghana}=\frac{18,339,000}{237,533}\approx77.2\text{ }\frac{people}{sq\text{ k}m} \end{gathered}$

7 0

2 years ago

What is 0.25 x ? = 2.16

Anastaziya [24]

<span>implifying x2 + -16 = 0 Reorder the terms: -16 + x2 = 0 Solving -16 + x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + x2 = 0 + 16 Combine like terms: -16 + 16 = 0 0 + x2 = 0 + 16 x2 = 0 + 16 Combine like terms: 0 + 16 = 16 x2 = 16 Simplifying x2 = 16 Take the square root of each side: x = {-4, 4}</span>

3 0

4 years ago

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