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adelina 88 [10]
3 years ago
14

PLEASE HELP. When solving the equation, what property was used to go from Step 2 to Step 3?

Mathematics
1 answer:
Vitek1552 [10]3 years ago
5 0

9514 1404 393

Answer:

  addition property of equality

Step-by-step explanation:

The addition property of equality is used to add 2x to both sides of the equation:

  -2x +2x -3 = x +2x -18 . . step 2 with 2x added

  -3 = 3x -18 . . . . . . . . . . . . step 3 (simplified)

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What is the simplified form of 2/x^2-x - 1/x?
Pachacha [2.7K]

Answer:  \bold{(C)\ \dfrac{3 - x}{x(x-1)}}

<u>Step-by-step explanation:</u>

   \dfrac{2}{x^2-x}-\dfrac{1}{x}

=\dfrac{2}{x(x-1)}+\dfrac{-1}{x}

=\dfrac{2}{x(x-1)}+\dfrac{-1}{x}\bigg(\dfrac{x-1}{x-1}\bigg)

=\dfrac{2}{x(x-1)}+\dfrac{-x+1}{x(x-1)}

=\dfrac{2-x+1}{x(x-1)}

=\dfrac{3-x}{x(x-1)}

8 0
3 years ago
1. What is the y-inter slope of the graph? What does it mean in terms of this situation?
notka56 [123]

Answer:

1. the y-intercept is 9.5 and it means the starting length of the candle

2. the slope is -1/2 and it means that the candle burns 1/2 an inch every hour

3. it burns an inch every 2 hours, it is 9.5 inches long, so 19 hours it'll take to burn.  

8 0
3 years ago
rick jogged the same distance on tuesday snd friday, and 8 miles on sunday for a total of 20 miles for the week. solve to find t
saveliy_v [14]

Ricky jogged 6 miles on tuesday and 6 miles on friday

<em><u>Solution:</u></em>

Given that,

Rick jogged the same distance on tuesday and friday

Let "x" be the distance jooged on each tuesday and friday

He also jogged for 8 miles on sunday

Total of 20 miles for the week

Therefore, we frame a equation as,

total distance jogged = miles jogged on tuesday + miles jogged on friday + miles jogged on sunday

20 = x + x + 8

20 = 2x + 8

2x = 20 - 8

2x = 12

x = 6

Thus Ricky jogged 6 miles on tuesday and 6 miles on friday

3 0
3 years ago
Kelly has four times as many songs on her music player as Lou Tiffany has six times as many songs on your music player as Lou.al
Ivahew [28]
Kelly: 4y Lou: y Tiffany: 6y

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Kelly: 4x62 = 248 songs
Lou: 1x63 = 62 songs
Tiffany: 6x62 = 373 songs
3 0
3 years ago
Read 2 more answers
Suppose researchers marked 800 turtles and later were able to trap a total of 300 individuals in that population, of which 150 w
aleksklad [387]
The estimate for the total population size is 1600.

Setting up a proportion for this, we know that 150 out of our 300 turtle sample is marked; this is the first ratio for the proportion.  We also know that we marked 800 of our total population, which we will call x:

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Cross multiply:
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Divide both sides by 150:
150x/150 = 240000/150
x = 1600
8 0
3 years ago
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