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natka813 [3]
3 years ago
12

Twice the difference of a number and two is five

Mathematics
1 answer:
dezoksy [38]3 years ago
6 0

Answer:

2 (n - 2) = 5

n = 4.5

Step-by-step explanation:

2 (n - 2) = 5

2n - 4 = 5

     +4.   +4

2n = 9

divide both sides by 2

n = 9/2 = 4.5

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Each diagram is made of smaller, identical pieces. Tell how many pieces you would shade to model 25%
eduard

Answer:

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Step-by-step explanation:

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3 years ago
Help me out now Please I'm stuck on this
Elena-2011 [213]

5x + 2(x + 1) ≤ 23

Distribute the 2.

5x + 2x + 2 ≤ 23

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8 0
3 years ago
What is the fraction for five over two
nignag [31]

Answer:

So normally you would say it as

                  \       /

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3 0
3 years ago
A tub is filled with 18000 cm3 of water. It loses one-tenth of its water every 12 hours. What volume of water would be remaining
Lina20 [59]

Answer:

0 cm³

Step-by-step explanation:

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6 0
3 years ago
Solve equation by factoring.
3241004551 [841]

Hi ;-)

x^2+6x-10=30 \ \ /-30\\\\x^2+6x-40=0\\\\a=1, \ b=6, \ c=-40\\\\\Delta=b^2-4ac=6^2-4\cdot1\cdot(-40)=36+160=196\\\\\sqrt{\Delta}=\sqrt{196}=14\\\\x_1=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-6-14}{2}=\boxed{-10}\\\\x_2=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-6+14}{2}=\boxed4

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