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MrRissso [65]
3 years ago
15

Plz help me im begging u to help

Mathematics
2 answers:
Vedmedyk [2.9K]3 years ago
8 0

Answer:

356 miles a day nkw help me

nika2105 [10]3 years ago
3 0

Answer:

356 miles

Step-by-step explanation:

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The table below models the cost, y, of using a high-efficiency washing machine and a standard washing machine over x number of y
SSSSS [86.1K]

ANSWER:

i) y = 25x + 500

ii) y = 30x + 400

iii) The washing machines would cost the same amount after 20 years of use

iv) Standard machine

Step-by-step explanation:

i)

We are to determine a straight line equation that models the cost of High-Efficiency washing machine over the years;

The first step step is to determine the slope of the line,

( change in y) / ( change in x ) = (550 - 525) / ( 2 - 1) = 25

The equation is slope-intercept form will be;

y = 25x + c

Where y is the cost of the High-Efficiency washing machine and x the number of years. To determine the y-intercept, c, we use any pair of points given in the data table;

when x = 1, y = 525

525 = 25(1) + c

c = 500

Therefore;

y = 25x + 500

ii)

The straight line equation that models the cost of Standard washing machine over the years;

Slope = (460 - 430) / (2 - 1) = 30

The equation is slope-intercept form will be;

y = 30x + c

when x = 1, y = 430

430 = 30(1) + c

c = 400

Therefore;

y = 30x + 400

Where y is the cost of the standard washing machine and x the number of years.

iii)

Given the cost functions for both machines over the number of years, we simply equate the two equations and determine the value of x when both machines would cost the same amount;

We have the cost functions;

y = 25x + 500

y = 30x + 400

Equating the two and solving for x;

25x + 500 = 30x + 400

500 - 400 = 30x - 25x

100 = 5x

x = 20

Therefore, the washing machines would cost the same amount after 20 years of use.

iv)

In order to determine which machine would be the more practical purchase if kept for 9 years we use the cost functions obtained in i) and ii)

The cost function of the High-Efficiency washing machine is;

y = 25x + 500

To determine the cost, we solve for y given x = 9

y = 25(9) + 500

y = 725

The cost function of the Standard washing machine is;

y = 30x + 400

We solve for y given x = 9

y = 30(9) + 400

y = 670

Comparing the two values obtained, the cost for the Standard washing machine is more practical.

3 0
2 years ago
Read 2 more answers
Help please!! 5th grade math.
PolarNik [594]

mixed number is 2 1/3

3 0
3 years ago
Read 2 more answers
A company sells sneakers and has a revenue that can be represented by the function R(s) = 80s – s2, where s represents the numbe
Harman [31]

Answer:

the second one is the answer

6 0
2 years ago
Write the coefficient of x in the following term. <br><br> 24x
chubhunter [2.5K]

Answer:

24

Step-by-step explanation:

definition of coefficient: a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g. 4 in 4x y)

5 0
3 years ago
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Find the area. Simplify your answer.<br> 3x<br> 5
jenyasd209 [6]

Answer:

15x square units

Step-by-step explanation:

3x x 5 =

15x square units

Hope that helps!

8 0
3 years ago
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