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n200080 [17]
2 years ago
8

3. Which of the following represents the

Mathematics
1 answer:
Vladimir [108]2 years ago
7 0

Answer:

I should help u am busy strongly with mine

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What is i^15 for imaginary numbers
allochka39001 [22]

Answer:

1^15 is 15

Step-by-step explanation:

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Which statement about these two sandboxes is true?
adell [148]
A would be the answer
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I would gladly appreciate it
IrinaVladis [17]

Answer: D

Step-by-step explanation: Complementary angles add up to 90 degrees supplementary add up to 180 degrees and vertical angles  are like CAF and DAE like how they're diagonal

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Correct answers only please!
Masteriza [31]

Answer:

Use the given formula :

I = P × R × t

I = 80 × 5/100 × 3

I = $ 12

5 0
2 years ago
The roots of the quadratic equation $z^2 + bz + c = 0$ are $-7 + 2i$ and $-7 - 2i$. What is $b+c$?
Alexxx [7]

Answer:

67

Step-by-step explanation: Given the quadratic equation $z^2 + bz + c = 0$, Vieta's formulas tell us the sum of the roots is $-b$, and the product of the roots is $c$. Thus,

\[-b = (-7 + 2i) + (-7 - 2i) = -14,\]so $b = 14.$

Also,

\[c = (-7 + 2i)(-7 - 2i) = (-7)^2 - (2i)^2 = 49 + 4 = 53.\]Therefore, we have $b+c = \boxed{67}$.

There are many other solutions to this problem. You might have started with the factored form $(z - (-7 + 2i))(z - (-7 - 2i)),$ or even thought about the quadratic formula.

This is the aops answer :)

8 0
2 years ago
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