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Talja [164]
2 years ago
7

Which represents the solution(s) of the equation x2=289?

Mathematics
2 answers:
Alekssandra [29.7K]2 years ago
5 0

Answer:

The answer are the options C and D

x equals negative square root of 289

x equals positive square root of 289

Step-by-step explanation:

we have

x^{2} =289

Take square root both sides

x=(+/-)\sqrt{289}

therefore

the solutions are

x=+\sqrt{289}

x=-\sqrt{289}

Naddik [55]2 years ago
4 0
The answer is D, since when you simplify the equation, you would sqrt each side of the equation, making the answer be the positive square root of 289.

Hope this helps!
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Four runners start at the same point; Lin, Elena, Diego, Andre. For each runner write a multiplication equation that describes t
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<u>Answer:</u>

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Simultaneous equations <br>5x + 3y= 31<br>2x + y = 12 <br><br>a. find for x​<br>b. find for y
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Answer:

x=5

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Step-by-step explanation:

5x + 3y= 31

-6x - 3y = -36  (multiple  by -3)

 

-x=-5

x=5

2(5)+y=12   or         25 + 3y= 31

10+y=12                  3y=6

y=2                          y=2

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Rachel hikes at a steady rate from a ranger station to a campground that is 20 mi away. After 2 h, she is 13 mi from the campgro
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Answer:

-3.5

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Step-by-step explanation:

After 2 hours, she is 13 miles from the campground.

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The equation of the line passing through the points (x_1,y_1) and (x_2,y_2) is

y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)

Substitute:

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Hence,

y-13=\dfrac{6-13}{4-2}(x-2)\\ \\y-13=-3.5(x-2)\\ \\y=-3.5x+7+13\\ \\y=-3.5x+20

The slope of the line is -3.5 and it represents that  the distance Rachel covers per hour is 3.5 miles.

8 0
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