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Leno4ka [110]
2 years ago
9

HELP ASAP!!!!!!!!! Please answer both

Mathematics
1 answer:
maks197457 [2]2 years ago
3 0

Step-by-step explanation:

questions 8, obviously the mid part of the parabola is 3, that is the axis of symmetry.

question 9, only one solution because you only have one parabola.

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Simplify the expression (9 + 2i)(9 − 2i).<br><br> 81 − 18i<br> 81 + 18i<br> 77<br> 85
Ymorist [56]

Answer:

=85

Step-by-step explanation:

I'm pretty sure I'm correct

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Y varies inversely with x.
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Y is 7.5
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Add 2 to both sides of the equation.
qwelly [4]

Answer:

See below.

Step-by-step explanation:

Adding 2 to both sides will not help solve the equation.

Adding 2 to both sides gives you this:

x^3 = ∛(x-2)

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What was the original question?

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3 years ago
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Determine whether the given set, together with the specified operations of addition and scalar multiplication, is a vector space
oksano4ka [1.4K]

Answer:

  • The set R^2 with x ≤ 0 and y ≤ 0 is not a vector space.
  • The 10th axiom  cv \in V does not hold

Step-by-step explanation:

Let u, v and w be vectors in the vector space V, and let c and d be scalars. A set S is defined as a vector space if it satisfies the following conditions:

  • 1. u+v  \in V
  • 2. v + w = w + v
  • 3. (u + v) + w = u + (v + w)
  • 4. v + 0 = v = 0 + v
  • 5. v + (−v) = 0
  • 6. 1v = v
  • 7. c(dv) = (cd)v
  • 8. c(v + w) = cv + cw
  • 9. (c + d)v = cv + dv
  • 10. cv \in V

Given the set of all vectors x, y in R^2 with x ≤ 0 and y ≤ 0

If the scalar c is such that c0.

Therefore, the 10th axiom is not satisfied and thus the set R^2 with x ≤ 0 and y ≤ 0 is not a vector space.

6 0
3 years ago
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