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Degger [83]
2 years ago
11

What is the solution set of the equation?

title="\sqrt{x} -18+9x=x" alt="\sqrt{x} -18+9x=x" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
bagirrra123 [75]2 years ago
8 0

9514 1404 393

Answer:

  x ∈ {2.07014981016}

Step-by-step explanation:

The equation can be rewritten as ...

  √x = 18-8x

  x = 324 -288x +64x²

  64x² -289x +324 = 0

  x = (289 ±√577)/128 ≈ {2.07015, 2.44548}

Since √x must be positive, we know that ...

  18 -8x ≥ 0

  x ≤ 18/8 = 2.25

The larger of the above solutions is extraneous, so the solution set is ...

  x ∈ {(289 -√577)/128} ≈ {2.07015}

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sweet-ann [11.9K]

Answer:

D

Step-by-step explanation:

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3 0
4 years ago
What is the probability that a point chosen at random in the rectangle is also in the blue triangle?
andrew-mc [135]

Answer:

<h2>1/2</h2>

Step-by-step explanation:

there are 2 corners that are blue out of 4

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3 0
2 years ago
You need to solve a system of equations. You decide to use the elimination method. Which of these is not allowed? 3x-2y=7 equati
svetlana [45]

Answer:

x = 31/9 and y = 5/3

Step-by-step explanation:

It is given that,

3x - 2y = 7  -----(1)

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<u>To find the solution by elimination method</u>

Step 1: Subtract eq(2) from eq(1)

3x - 2y = 7  -----(1)

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0  - 6y = -10

6y = 10

y = 10/6 = 5/3

Step 2: Substitute the value of y in eq (1)

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5 0
3 years ago
Read 2 more answers
What’s the answer for A B and C?
dimaraw [331]

Answer:

a = 2

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Step-by-step explanation:

       First, let us look at the first two (far left) fractions to solve for a.

Since 2^5 = 2^5, nothing needs to change in the numerator. 4 = 2^{2}

    a = 2.

       Next, we will look at the first and third fractions to solve for b.

2^5 = 32

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2^3 = 8

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       Lastly, we will solve for c.

All of these fractions simplify to 8 and are equal to each other.

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2 years ago
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Because tax is an additional charge to the original amount therefor it is simply an increase
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3 years ago
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