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Montano1993 [528]
3 years ago
8

Somebody please help me with these problems and show me the steps teacher didn’t really help and it’s 2 step equations with frac

tions.

Mathematics
1 answer:
Andre45 [30]3 years ago
3 0

5 1/2 - u = 9/4          U= 13/4

Basically you have to get the variable (u) by itself. Doing this by doing the opposite of what it’s doing to both sides of the equation.

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Given: , ∠DAC ≅ ∠BCA Prove: ∆ADC ≅ ∆CBA Look at the proof. Name the postulate you would use to prove the two triangles are congr
Zolol [24]

Answer:

  SAS Postulate

Step-by-step explanation:

The contributors to the proof are listed in the left column. They consist of a congruent Side, a congruent Angle, and a congruent Side. The SAS Postulate is an appropriate choice.

6 0
3 years ago
-3x-12>8x+21 please help 30 points!!!!!!!!!!!!!!
hram777 [196]
-3x-12> 8x + 21
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x < -3

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3 years ago
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8 0
3 years ago
12. Linda walks through a road. If her walking speed increases from 1 m/s to 1.5 m/s, she will complete the walk 200 s earlier.
Katen [24]

Answer:

<u>600 meters</u>

Step-by-step explanation:

<u>Case 1 : Speed of 1 m/s</u>

  • d = v * t
  • d = 1 * t
  • d = t       [Equation 1]

<u>Case 2 : Speed of 1.5 m/s</u>

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  • d = 1.5 * (t - 200)
  • d = 1.5t - 300 [Equation 2]

As distance in both cases is the same, equate the values of d from both equations.

  • t = 1.5t - 300
  • 0.5t = 300
  • t = 300 * 2
  • <u>t = 600 s</u>

Now, put the value of t in <u>Equation 1</u> to find d.

  • d = <u>600 meters</u>
7 0
2 years ago
At the Edmond Public Library there are 470 picture books and 75 board books. What is the ratio of picture books to each board bo
denis23 [38]

Answer:

470:80

Step-by-step explanation:

75 is rounded to 80, while 470 stays the same because it doesn't need to be rounded.

5 0
3 years ago
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