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statuscvo [17]
2 years ago
7

X^2 -2x -1 = 0 Pls help...show work and the answer

Mathematics
1 answer:
stepladder [879]2 years ago
3 0
x^2-2x-1=x^2-2x+1-2=(x-1)^2-2=0

Solve for x:

(x-1)^2-2=0
(x-1)^2=2
x-1=\pm\sqrt2
x=1\pm\sqrt2
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All you need is in the photo ​<br><br><br>please explain step by step
V125BC [204]

Answer:

Hi there

The formula is

A=p (1+r)^t

A future value

P present value

R interest rate

T time

A) A=2,000×(1+0.04)^(3)=2,249.728

B) A=2,000×(1+0.04)^(18)=4,051.63

C) 2500=2000 (1+0.04)^t

Solve for t

T=log(2,500÷2,000)÷log(1+0.04)

T=5.7 years

D) t=log(3,000÷2,000)÷log(1+0.04)

t=10.3 years

Hope it helps

Step-by-step explanation:

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3 years ago
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Y = -3x+8
y = -5x-2
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y = 5(-3x+8)
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y = -15x+40       
       -      - 
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y = 46
<span>
y = -3x+8
</span>46 = -3x+8
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38 = -3x
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12.666...=x
(<span>12.666.,46) </span>← Answer
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3 years ago
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<h2>Answer: B </h2>

Step-by-step explanation:

If your rounding her weekly income you would go down to $200 then take that times 11 for each week, giving you $2,200 roughly

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3 years ago
Multiply 3x (2x - 1)​
Volgvan

Answer:

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6x^2-3x

Step-by-step explanation:

3x (2x-1)

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