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xxMikexx [17]
3 years ago
14

If 1+1 =2 then what does 2+1=?

Mathematics
2 answers:
konstantin123 [22]3 years ago
8 0

Answer:

3

Step-by-step explanation:

if 1+1=2

than 2+1=3..

hope it is helpful

NeX [460]3 years ago
8 0

Answer:

TwEnTy OnE

Step-by-step explanation:

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6m-6=9m+15 (Show work)​
9966 [12]

Answer:

m=-7

Step-by-step explanation:

6m-6=9m+15

Add 6 to both sides:

6m-6+6=9m+15+6

6m=9m+21

Subtract 9m from both sides:

6m-9m=9m+21-9m

-3m=21

Divide both sides by -3:

\frac{-3m}{-3}=\frac{21}{-3}

m=-7

6 0
3 years ago
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Which ordered pairs are solutions to the inequality 2x+3y≥−1 ?
Pavlova-9 [17]
There are many pairs that are solutions to this inequality. You can find them all by graphic this on a coordinate plane and then shading the region. 

You can also plug any of the ordered pairs that they give you into the equation and see if they produce a true statement. 
7 0
3 years ago
Solve the simultaneous equation 3x²-xy=0, 2y-5x=1​
ratelena [41]

Answer:

  (x, y) = (0, 1/2) or (1, 3)

Step-by-step explanation:

The first equation factors as ...

  x(3x -y) = 0

This has solutions x=0 and y=3x.

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<u>x = 0</u>

Using this in the second equation gives ...

  2y -0 = 1

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  (x, y) = (0, 1/2) is a solution

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<u>y = 3x</u>

Using the expression for y in the second equation, we get ...

  2(3x) -5x = 1

  x = 1 . . . . . . . . . simplify

  y = 3x = 3 . . . . using x=1 in the first equation

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_____

Interestingly, the (red line) graph of 3x^2 -xy = 0 produced by this graphing calculator has a "hole" at x=0, It says that point is (0, undefined). In a sense, y is undefined, in that it can be <em>anything</em>. A more appropriate graph would graph that equation as the two lines x=0 and y=3x.

4 0
3 years ago
Darlene cuts a 9 1/2 foot long pipe into pieces that are 2 3/8 feet long.How many pieces of pipe does she have? Explain
Vladimir [108]

Answer:

She has 4 pieces of pipe

Step-by-step explanation:

You have to just simply see how many 2 3/8 are in 9 1/2:

(9+1/2)/(2+3/8)=(19/2)/(19/8)=(8×19)/(2×19)=4

5 0
3 years ago
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Amelie read 12 pages of her book each day for 4 days. Matthew read 12 pages of the same book each day for 8 days.
Marianna [84]

Answer:

if u are asking how many more pages Matthew read then it's 48 pages. If u are asking how many they read all together then it's 144 pages.

5 0
3 years ago
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