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8_murik_8 [283]
3 years ago
15

- 4x + 8y = 20 ----4x + 2y = -30

Mathematics
1 answer:
snow_tiger [21]3 years ago
5 0

Answer:

40

Step-by-step explanation:

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The sum of two rational numbers is<br> Rational or irrational
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Answer:

The sum of two rational numbers will be rational.

Step-by-step explanation:

Rational numbers are numbers that can be written, are integers, and are not zero. So, any rational number plus another rational number will be rational because their sum will also be an integer, writable, and not a zero.

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2² + 5 • 4 ÷ 2 =?<br><br> is it 18 or 14, and how? this is for my own personal studying
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The answer is 14 because

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3 years ago
A cereal box is a rectangular prism that is 8 inches long and 2 1/2 inches wide. The volume of the box is 200in3. What is the he
Zarrin [17]

Answer:

Height=10\, inches

Step-by-step explanation:

Volume of a Rectangular Prism is :

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For,

Volume=200\,inch^3\\\\Length= 8\,inches\\\\Width=2\dfrac{1}{2}=\dfrac{5}{2}\\\\  Height=?\\

200=8\times \dfrac{5}{2}\times Height\\\\ 200=4\times 5\times Height\\\\200=20\times Height\\\\Height=\dfrac{200}{20}\\\\ Height=10\,inches

The Height of the rectangular prism is: 10\,inches

7 0
3 years ago
Mhanifa please help!! I will mark brainliest. Random answers will be reported
IrinaVladis [17]

Answer:

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Step-by-step explanation:

  • Point O has coordinates (0, 0)
  • B has coordinates (h, k)
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<u>Use the distance formula to find the length of OB:</u>

  • OB = \sqrt{(h-0)^2 + (k-0)^2} = \sqrt{h^2 + k^2}
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