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3 years ago

How do you solve radical 2x plus 5 equals x?

Mathematics

2 answers:

Ksenya-84 [330]3 years ago

8 0

X=-5 is your answer. Hope this helps :)

Brums [2.3K]3 years ago

8 0

Radical 2x+5 equals x

1. Square both side.

2x+5 equals x square

Move everything to one side.
X square-2x-5=0

Since this time, we can't factor very well. We need to use the quadratic formula.

-b+- square root b square- 4ac divided by 2a

This gives: -(-2)* square root( 4-4(1)(5))/ 2

Notice that we get 2 plus and minus square root of -16.

Which is an imagery/ complex solution.

The value of x could be 2+i4/2 or 2-i4/2

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An airplane heading due east has a velocity of 210 miles per hour. A wind is blowing from the north at 38 miles per hour. What i

Nimfa-mama [501]

Answer:

The resultant velocity of the airplane is 213.41 m/s.

Step-by-step explanation:

Given that,

Velocity of an airplane in east direction, $v_1=210\ mph$

Velocity of wind from the north, $v_2=38\ mph$

Let east lies in the direction of the positive x-axis and north in the direction of the positive y-axis.

We need to find the resultant velocity of the airplane. Let v is the resultant velocity. It can be calculated as :

$v=\sqrt{v_1^2+v_2^2}$

$v=\sqrt{(210)^2+(38)^2}$

v = 213.41 m/s

So, the resultant velocity of the airplane is 213.41 m/s. Hence, this is the required solution.

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3 years ago

X+4+3x=72<br> x+4+3x=72<br><br> .

Aneli [31]

Answer:

yes it does equal 72

Step-by-step explanation:

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2 years ago

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gogolik [260]

70% 30 = 21 I highly recommended using google it’s so much easier then this app sometimes because you won’t have to answer other people’s questions hahaha I’m only using it bc I can’t find the answers on google for my homework

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3 years ago

102+900=1002 More. Then 100

Ksivusya [100]

Hello!

I don't exactly understand your question. If you mean to be asking whether or not 1002 is geater than 100, it is.

If you mean to be asking to add it: 102 + 900 + 100 = 1102

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3 years ago

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A rectangle has an area of 12 feet and a length of 5 feet .what is its width

Reil [10]

Area= l * b

12= 5 * b

b = 12/ 5

b= 2.4 ft

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3 years ago

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