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solniwko [45]
3 years ago
10

Solve:

Mathematics
1 answer:
VikaD [51]3 years ago
4 0

Answer:

d

Step-by-step explanation:

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What are the exact solutions of x2 - 5x - 1 = 0?.
borishaifa [10]
x^2-5x-1=0\\\\a=1;\ b=-5;\ c=-1\\\Delta=b^2-4ac\\\\\Delta=(-5)^2-4\cdot1\cdot(-1)=25+4=29 \ \textgreater \  0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ \dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{5-\sqrt{29}}{2\cdot1}=\boxed{\dfrac{5-\sqrt{29}}{2}}\\\\x_2=\dfrac{5+\sqrt{29}}{2\cdot1}=\boxed{\dfrac{5+\sqrt{29}}{2}}
8 0
3 years ago
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6n+n+14=0 i need the math
Fofino [41]
Let's solve your equation step-by-step.<span><span><span><span>6n</span>+n</span>+14</span>=0</span>

Step 1: Simplify both sides of the equation.<span><span><span><span>6n</span>+n</span>+14</span>=0</span><span>Simplify: (Show steps)</span><span><span><span>7n</span>+14</span>=0</span>

Step 2: Subtract 14 from both sides.<span><span><span><span>7n</span>+14</span>−14</span>=<span>0−14</span></span><span><span>7n</span>=<span>−14</span></span>

Step 3: Divide both sides by 7.<span><span><span>7n</span>7</span>=<span><span>−14</span>7</span></span><span>n=<span>−2</span></span>

Answer:<span>n=<span>−<span>2</span></span></span>
6 0
3 years ago
1) Your t-shirt provider sells you blank t-shirts for $5.00. What percent markup did you
Oksana_A [137]

Answer: 5%

Step-by-step explanation:

6 0
2 years ago
State whether or not each ordered pair is a solution of the given equation x+y=-5;(8,-3)
Vladimir [108]
No, 8 plus -3 equals 5. Not -5.
3 0
3 years ago
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7 less than the quotient of a number 5 and w in a algebraic expression.
Aleksandr-060686 [28]

Answer:

5/w -7

Step-by-step explanation:

quotient means division

5/w

less than means it comes after

5/w -7

5 0
3 years ago
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