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vazorg [7]
4 years ago
10

A student concluded that the solution to the

Mathematics
1 answer:
meriva4 years ago
5 0

Answer:

Step-by-step explanation:

The given equation is √2x+1+3=0

And we have been given that x= 4

I do not agree with the solution because it does not give any real solution. It only gives possible solution. If you plug the value 4 in the original equation you will get 8 and the square root of 8 is a complex number.  Thus 4 is an extraneous solution....

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Airida [17]

Answer:

x = 80

Step-by-step explanation:

9+1=10 so x/8 must equal 10.

80/8 = 10 and subract by 9 = 1

7 0
3 years ago
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A person jogged 10 times along the perimeter of a rectangular field at the rate of 12 kilometers per hour for 30 minutes. If fie
balu736 [363]

Answer:

20,000m²

Step-by-step explanation:

If they jog 12 km/h for half an hour, they have covered.

12 X 0.5 = 6km in 10 circuits. Making 1 perimeter

6 / 10 =0.6 km (600 m).

To determine area we need to convert this perimeter to length and width. We know that it is a rectangle, with 2 equal widths and 2 equal lengths, and the length is twice the width.

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4 0
3 years ago
4x^3 + 2x^2 + 6x + 3
Artist 52 [7]

Answer:

(2x+1)(2x2+3)

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Factor 4x3+2x2+6x+3

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3 years ago
A plot of land is in the shape of a triangle. If one side is x meters, a second side is (5x - 2) meters and a third side is (7x-
tatuchka [14]

Hey there! I'm happy to help!

The perimeter is the distance around a shape. Let's add up the lengths of our sides to ind it.

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And all of the constants.

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Have a wonderful day! :D

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mamaluj [8]

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