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sleet_krkn [62]
4 years ago
5

How to solve for X for 2X= 3X-1 when 3X-1 is under a square root

Mathematics
1 answer:
KengaRu [80]4 years ago
3 0
2x=\sqrt{3x-1}\implies (2x)^2=(\sqrt{3x-1})^2\implies 4x^2=3x-1\implies 4x^2-3x+1=0

You can use the quadratic formula to solve for x, but first check the discriminant:

\Delta(ax^2+bx+c)=b^2-4ac\implies \Delta(4x^2-3x+1)=-27

Since the discriminant is negative, this quadratic equation has two complex solutions, so there is no real solution to the original equation.
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The following system of equations is graphed below.
navik [9.2K]
One way is subsitute
I like solving

so

what you do is this
add the equaitons to gether to eliminate x

2y=x+5
<u>3y=-x-3 +</u>
5y=0x+2
5y=2
y=2/5

sub back


2y=x+5
2(2/5)=x+5
4/5=x+5
minus 5
4/5-25/5=x
-21/5=x

the point is (x,y) or
(-21/5,2/5)
aprox
(-4.2,0.4)
I think they wanted you to read the garph you should have attached and guess the answer
the closes one is
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3 0
3 years ago
A triangle has two sides of lengths 6 and 9. What value coul the length of the third side be?
topjm [15]

Answer:

(a) -2,0 and 2,5 and (b) 2,-1 and 10,9

The question is incomplete without the answer choice. Let's consider the following:

A line has a slope of -4/5. Which ordered pairs could be points on a line that is perpendicular to this line? select two options

a) -2,0 and 2,5

b) -4,5 and 4,-5

c) -3,4 and 2,0

d) 1,-1 and 6,-5

e) 2,-1 and 10,9

8 0
3 years ago
Read 2 more answers
Demarco wrote two correct variable expressions to represent the phrase “the product of a number and 7.” Which of these variable
enot [183]
A and b because the "product" is the answer to multiplication, and those are the only answers where 7 and n are being multiplied. Answer b is technically more correct than a is because the coefficient should come before the variable.
4 0
3 years ago
(x-6)(x+2) hi am am stuck can someone answer asap
notka56 [123]

Answer:

x²-4x-12

Step-by-step explanation:

multiply each term in the first parentheses by each term in the second parentheses

x*x+2x-6x-6*2

calculate the product

x²+2x-6x-12

collect like terms

x²-4x-12

7 0
3 years ago
I need help on this question?
Valentin [98]

Answer:

Now it works lol. 290 for the first and 300 for the second

Step-by-step explanation:

6 0
3 years ago
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