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Inga [223]
3 years ago
12

I need the answers and stuff

Mathematics
1 answer:
Rufina [12.5K]3 years ago
8 0
2.25
32
29.3
not sure about the last one
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How can you prove a triangle is isosceles?
tatiyna
You can prove a triangle is isosceles by finding the amount of right angles in a triangle. A triangle containing 2 right angles is classified as isosceles.
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Pls help me! 19 and 20.
Murljashka [212]

Answer:

See below ↓

Step-by-step explanation:

19.

  • \frac{x-1}{2} - \frac{x-3}{5} - \frac{x-7}{10} + \frac{x-2}{5}
  • \frac{5(x-1)-2(x-3)-(x-7)+2(x-2)}{10}
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  • \frac{4x+4}{10}
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20.

  • \frac{2x+3}{2x} + \frac{x+3}{4x} - \frac{18x+6}{8x^{2} }
  • \frac{4x(2x+3)+2x(x+3)-(18x+6)}{8x^{2} }
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  • \frac{10x^{2}-6}{8x^{2} }
  • \frac{5x^{2}-3}{4x^{2} }
4 0
2 years ago
Bill says that he can add 23 and 40 without regrouping is bill correct how do you know
Alexxx [7]
Yes bill is correct because 
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2 years ago
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How are the values of the 3's in 33,000 related
Alenkinab [10]
In which place? Of the value one tens hunderd thousnd
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3 years ago
Explain what is the difference between (-6) to the power of 2 and -6 to the power of 2.
Allisa [31]

Answer:

Step-by-step explanation:

(-6)² = -6*-6

(-6)² = 36

-(6)² = -(6*6)

-(6)² = -36

The sign is affected by potency

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