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3 years ago

9

Please answer the question! It is optional to answer the one where you need to upload the graph but if you wanna help answer it

you can!

1 answer:

Ganezh [65]3 years ago

6 0

The answer is option 3

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Evaluate the expression (2.5)^3

sergejj [24]

Answer:

15.625

Step-by-step explanation:

(2.5)^3 = 2.5 · 2.5 · 2.5
2.5 · 2.5 · 2.5 = 6.25 · 2.5
6.25 · 2.5 = 15.625

Therefore, (2.5)^3 = 15.625.

7 0

3 years ago

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

Svetlanka [38]

Answer: $6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}$

Step-by-step explanation:

Given

Quadratic equation is

$x^2-12x+15=0$

Solving by completing the square method

$\Rightarrow x^2-2\cdot 6\cdot x+15=0\\\text{add and subtract 36}\\\Rightarrow x^2-2\cdot 6\cdot x+15+36-36=0\\\Rightarrow x^2-2\cdot 6\cdot x+36+(-36+15)=0\\\text{using}\ (a-b)^2=a^2+b^2-2ab\\\Rightarrow (x-6)^2-21=0\\\Rightarrow (x-6)^2=21\\\Rightarrow x-6=\pm \sqrt{21}\\\Rightarrow x=6\pm \sqrt{21}$

The solution set of the equation is $6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}$

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3 years ago

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Which expression equals 93102

Karo-lina-s [1.5K]

Answer:

you got this

Step-by-step explanation:

goodluck

4 0

3 years ago

Identify the domain of the graph.

Viktor [21]

Answer:

Domain is 0 to 50.

Step-by-step explanation:

$0 \leq x \leq 50$

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Find the solution of the square root of the quantity of x plus 2 plus 4 equals 6, and determine if it is an extraneous solution.

morpeh [17]

minus 4 both sides

square both sides

x+2=4
minus 2
x=2

<span>the answer is
x = 2; not extraneous</span>

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3 years ago

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