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Mila [183]
3 years ago
13

Which statements are true about the circle shown? Check all that apply.

Mathematics
1 answer:
otez555 [7]3 years ago
6 0

Step-by-step explanation:

  1. A circle is only composed of the points on the border
  2. The distance around the circle is called circumference

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Would love some help :)
Usimov [2.4K]

Answer:so would i

Step-by-step explanation:

4 0
3 years ago
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
3 years ago
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Given the points A(-1, 2) and B(7,6), find the coordinates of the point P on the
Sergio039 [100]

Answer:

plot ab is right just had the test

6 0
3 years ago
How to write 1.7 in expanded form
murzikaleks [220]
1+0.7 is 1.7 is expanded form. Could I be brainliest?

3 0
3 years ago
9 (c - 6) = 63 what is the value of c
klasskru [66]
9 (c - 6) = 63
9c - 54 = 63
9c = 117
c = 13
6 0
3 years ago
Read 2 more answers
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