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liberstina [14]
3 years ago
10

Solve the following systems by the addition method 4x - y =3 2x+3y = 18

Mathematics
1 answer:
Taya2010 [7]3 years ago
4 0
Hello :
<span>4x - y =3........ ×3
2x+3y = 18
 I'have :  12x-3y = 9
               2x +3y = 18
</span><span>by the addition method : 14 x =27
</span> x = 27/14
4(27/14)-y = 3
y = 33/7


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Answer:

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8 0
2 years ago
Solve for 2/5 + 3/8= With two possible answeres
Pani-rosa [81]
You can change the denominators so they are alike.\frac{16}{40} + \frac{15}{40} = \frac{31}{40}
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3 years ago
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3 years ago
PLEASE HELP IVE ASKED THIS QUESTION 3 TIMES PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!​
worty [1.4K]

THEOREM:

  • h² = p² + b² where h is hypotenuse, b is base and p is perpendicular.

ANSWER:

[3] By pythagorean theorem,

  • x² = 14² + 9²
  • x² = 196 + 81
  • x² = 277
  • x = √277
  • x = 16.64 rounded.

[4] By pythagorean theorem,

  • x² = 32² + 24²
  • x² = 1024 + 576
  • x² = 1600
  • x = √1600
  • x = 40.

[5] By pythagorean theorem,

  • (2x)² = 21² – 12.6²
  • 4x² = 441 – 158.76
  • 4x² = 284.24
  • x² = 284.24/4 = 70.56
  • x = √70.56
  • x = 8.4

[6] By tangent property,

  • 7x – 29 = 2x + 16
  • 7x – 2x = 16 + 29
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So, WX = 7(9) – 29 = 63 – 29

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3 years ago
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Answer:

38 and 57

Step-by-step explanation:

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3 years ago
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