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Naddik [55]
3 years ago
12

What is the solution of sqrt x+12=x ? x = –3 x = 4 x = –3 or x = 4 no solution

Mathematics
2 answers:
icang [17]3 years ago
8 0
\left[x _{2}\right] = \left[ 4\right][x​2​​]=[4] totally value
Alexeev081 [22]3 years ago
7 0

x = 4 is the solution

given \sqrt{x+12} = x ( square both sides )

x + 12 = x² ( rearrange into standard form )

x² - x - 12 = 0 ← in standard form

(x - 4 )(x + 3 ) = 0 ← in factored form

equate each factor to zero and solve for x

x - 4 = 0 ⇒ x = 4

x + 3 = 0 ⇒ x = - 3

substitute these values into the original equation and if both sides are equal then they are the solutions

x = 4 : \sqrt{4+12} = \sqrt{16} = 4 = x ← correct

x = - 3 : \sqrt{-3+12} = \sqrt{9} = 3 ≠ - 3 ← false

the solution is x = 4


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PLZZ! HELP WITH THIS! WILL GIVE BRAINLLEIST! PROMISE! AND 11 POINTS! FOR A SIMPLE ANSWER! THANKS TO ANYONE WHO ANSWERS THIS! HUR
Alenkinab [10]

Answer:

65.52 square feet

Step-by-step explanation:

to find area of a rhombus with the diagonals multiply them together and divide by two.

10.4 x 12.6 = 131.04

131.04/2 = 65.52 square ft

7 0
3 years ago
Jared bought a Suzuki 1000 for $12,698. If it depreciates at a rate of 11% per year, how much will it be worth in 3 years
Serga [27]
Original price = P = $12,698
Depreciation rate = r = 11% = 0.11
Time in years = t = 3
New price = A

The formula used will be:

A=P(1-r)^{t}

Using the values, we get:

A=12698(1-0.11)^{3}=8951.70

Thus, the worth of Suzuki after 3 years will be $8951.70
7 0
2 years ago
Solve the system by the elimination method. 3x - 2y - 7 = 0 5x + y - 3 = 0 To eliminate y, the LCM is 2. Which of the following
Tresset [83]
Next time, please share your system of linear equations by typing only one equation per line:

<span>3x - 2y - 7 = 0 5x + y - 3 = 0  NO

</span><span>3x - 2y - 7 = 0
5x + y - 3 = 0                          YES

Mult. the 2nd equation by 2 so as to obtain 2y, which will be cancelled out by  - 2y in the first equation:

</span><span>  3x - 2y - 7 = 0
2(5x + y - 3 = 0)

Then:

  3x - 2y - 7 = 0
10x +2y - 6 = 0
----------------------
13x - 13 = 0, so that x = 1.  Find y by subbing 1 for x in either of the 2 given equations.</span>
5 0
3 years ago
Read 2 more answers
consider the triangles shown below. which of the following relationship is needed to prove that ABD ...
Brrunno [24]

A. is the answer.

the 2 triangls have AD = AC

and AB as a common side. therefore the triangls are congruent.

5 0
3 years ago
Which expression is equivalent to 21 × 7?
belka [17]

I wanna say the answer is A

6 0
3 years ago
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