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Likurg_2 [28]
3 years ago
8

Please!!!! HELP ME!! I give brainlyest!!! are u my friend? The table below models the cost, y, of using a high-efficiency washin

g machine and a standard washing machine over x number of years. Which equation represents the cost of the high-efficiency washing machine over a given number of years? Which equation represents the cost of the standard washing machine over a given number of years? After how many years of use would the washing machines cost the same amount? Which washing machine would be the more practical purchase if kept for 9 years? ugh...
Mathematics
1 answer:
horsena [70]3 years ago
5 0

Answer:

y= 25x+500

y=30x+400

20

standard machine

Step-by-step explanation:

just did it on edge!! :D

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A circle has a radius of 6. An arc in this circle has a central angle of 48º.
ikadub [295]

Answer:

Step-by-step explanation:

48 * \pi / 180 = 0.837758041

6 0
3 years ago
4x-5y+2z=-3<br> 6x+4y+9z=8<br> 11x-2y-z=7
Nutka1998 [239]

Answer:

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Step-by-step explanation:

4 0
4 years ago
Tonya’s dog-walking service charges a flat rate of $20 per month, plus $3 per mile that each dog is walked. Beth does not charge
vladimir1956 [14]

Answer:

Ten miles

Step-by-step explanation:

Use this inequality

20 + 3m = 5m

4 0
3 years ago
A group of students made trees out of paper for a scene in a school play. The trees are shaped like square pyramids. The base is
Readme [11.4K]

Answer:

26.4ft²

Step-by-step explanation:

I first converted the centimeter values to feet

140Cm x 30.48 = 4.59

70cm x 30.48 = 2.3

the paper required is approximately equal to the area of the pyramid.

area of pyramid is equal to area of triangle + base²

Are of triangle = 1/2 x b xh

= 4 x 1/2 x4.59x2.3 + (2.3)²

= 2 x 4.59 x 2.3 + 5.29

= 26.4 feet²

therefore it will take 26.4 feet² paper to make each tree, including the bottom.

8 0
3 years ago
If f(x)=5x^2-8, what is the value of F(-3)?
mr Goodwill [35]

Answer:

F(-3)=5(-3)^2-8

=37

Step-by-step explanation:

Get it?

8 0
3 years ago
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