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Paladinen [302]
3 years ago
9

EASY MATH!!!!! EASY BRAINLIEST!

Mathematics
1 answer:
harina [27]3 years ago
6 0

5/10 or 50%

wchvcuwgvchcvhcvsdh

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42. A duplicating machine enlarges a picture 20%.
goldenfox [79]

Answer:

2.1

Step-by-step explanation:

1 x 0.2 = 0.2

1.2 x 0.2 = 0.24

1.44 x 0.2 = 0.288

1.728 x 0.2 = .3456

1.728 + 0.3456 = about 2

Please mark me brainliest

8 0
3 years ago
I have the answer, 2-(3/x+2)
Marat540 [252]

Start with the answer format we want, and work your way toward forming a single fraction like so

a + \frac{b}{x+2}\\\\a*1+\frac{b}{x+2}\\\\a*\frac{x+2}{x+2}+\frac{b}{x+2}\\\\\frac{a(x+2)}{x+2}+\frac{b}{x+2}\\\\\frac{a(x+2)+b}{x+2}\\\\\frac{ax+2a+b}{x+2}\\\\\frac{ax+(2a+b)}{x+2}\\\\

Compare that last expression to (2x+1)/(x+2). Notice how the ax and 2x match up, so a = 2 must be the case.

Then we have 2a+b as the remaining portion in the numerator. Plugging in a = 2 leads to 2a+b = 2*2+b = 4+b. Set this equal to the +1 found in (2x+1)/(x+2) to have the terms match.

So, 4+b = 1 leads to b = -3

Therefore, a = 2 and b = -3

------------------------------------------------

An alternative route:

\frac{2x+1}{x+2}\\\\\frac{2x+1+0}{x+2}\\\\\frac{2x+1+4-4}{x+2}\\\\\frac{(2x+4)+1-4}{x+2}\\\\\frac{2(x+2)-3}{x+2}\\\\\frac{2(x+2)}{x+2}+\frac{-3}{x+2}\\\\2-\frac{3}{x+2}\\\\

I added and subtracted 4 in the third step so that I could form 2x+4, which then factors to 2(x+2). That way I could cancel out a pair of (x+2) terms toward the very end.

------------------------------------------------

Other alternative methods involve synthetic division or polynomial long division. They are slightly separate but related concepts.

3 0
3 years ago
Read 2 more answers
The subway stop is (7,-6) and your house is (-9,5). What is the distance between your house and the subway stop
Dmitry [639]
27 away. (7, - 6) is in quadrant 2 and (-9,5) is in quadrant 4. 16  (-9 + 16 = 7) + 11 (-6 + 11 = 5) = 27
4 0
3 years ago
Are the two figures similar? D 6 15 9 c​
Viktor [21]

Answer:

These are similar. The scale factor is 1.5 going from ABC to DEF.

Step-by-step explanation:

What I did was divide the side lengths of DEF by the corresponding side on ABC.

12/8 = 1.5

9/6 = 1.5

15/10 = 1.5

Since the scale factor is the same on all three sides, these two figures are similar.

5 0
3 years ago
Yo can someone help me out
Ymorist [56]

Answer:

Second Option: \frac{7}{8} =7\div8

Step-by-step explanation:

A fraction means to divide.

1\div2=\frac{1}{2}

Therefore,

\frac{7}{8} =7\div8

3 0
3 years ago
Read 2 more answers
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