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Natali [406]
3 years ago
10

Four times a number and eight is twenty. hurryyyyyyyyy!!!

Mathematics
1 answer:
kykrilka [37]3 years ago
4 0

Answer:

The answer is 3

Step-by-step explanation:

4x+8=20

    -8  -8

4x=12

divide both sides by 4 and x is 3

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If h(x) = 2x4 - 4x2 - 2x, then h(3)= ? A) -6 B) 120 C) 192 D) 1146 E) 1434
garik1379 [7]

The value of h(3) is 120 ⇒ B

Step-by-step explanation:

To find the value of f(x) at x = a, do that

  • Substitute x by a
  • Find the value of f(a)

∵ h(x)=2x^{4}-4x^{2}-2x

- To find h(3) substitute x by 3

∴ h(3)=2(3)^{4}-4(3)^{2}-2(3)

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- Substitute them in the function above

∴ h(3) = 2(81) - 4(9) - 2(3)

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∴ h(3) = 120

The value of h(3) is 120

Learn more:

You can learn more about the functions in brainly.com/question/9006189

#LearnwithBrainly

7 0
4 years ago
Circle o is inscribed in triangle rst such that it is tangent at points m,n, and p. if rp is 7, rt is 17 and sm is 5, then what
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Tangents to the circle from the same point are the same length. Then rn = 7, and nt = 10. This means mt = 10, so ...

  st = sm +mt = 5 +10

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8 0
3 years ago
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