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m_a_m_a [10]
2 years ago
10

Solve x2 = 12x - 15 by completing the square. Which is the solution set of the equation?

Mathematics
1 answer:
Novosadov [1.4K]2 years ago
8 0

Answer:

(6-√21,  6+√21)

Step-by-step explanation:

x^2 - 12x = -15

(x - 6)^2 - 36 = -15

(x - 6)^2 = 21

x - 6 = ± √21

x = 6  ± √21

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balandron [24]

Answer:

4

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If sandwiches are 6 dollars each, then chips are 3 dollars, she only bought 5 sandwiches for 6 each for 30 dollars(5*6=30).So, she has 12 dollars left to spend since she spent 42 dollars. And 4 *3=12so she only bought 4 bags of chips.

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2 years ago
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Find the point estimate of the proportion of people who wear hearing aids if, in a random sample of 493 people, 40 people had he
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Point estimate proportion is the average of lower and upper interval limit.

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Maksim231197 [3]

Answer:

12.5 m

Step-by-step explanation:

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5 0
2 years ago
Answer below these questions
timurjin [86]

Answer:

A: 6x⁸y⁵

B: 4x⁵z⁸

C: 48a¹²b⁵

D: 6s⁹t³

Step-by-step explanation:

When you multiply 2 exponents together, you add them. When you power an exponent, you multiply the 2 exponents together,

3x²2y⁴(2x⁶y)

6x⁸y⁵

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2 years ago
A dilation is a nonrigid transformation that can produce enlarged or reduced images from a given pre-image. How do you know that
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A translation is a transformation that slides each point of a figure the same distance in the same direction. The lines connecting each point of the preimage to its image are congruent. One type of transformation that is not an isometry is called a dilation<span>.</span>
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2 years ago
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