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nadya68 [22]
3 years ago
6

1

Mathematics
1 answer:
uranmaximum [27]3 years ago
8 0

Answer:

1. 1

2. 1

3. -1/125

4. 1/125

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Juan has $1.30 in dimes and nickels he has a total of 15 coins how many dimes does juan have ​
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11 dimes and 4 nickles

Step-by-step explanation:

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3 years ago
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Which real-world scenario can be described by the algebraic expression StartFraction p over 8 EndFraction?
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Step-by-step explanation:

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What are the exact solutions of x2 − 5x − 1 = 0 using x equals negative b plus or minus the square root of the quantity b square
geniusboy [140]

Answer:

x=2.5+\frac{\sqrt{29}}{2}\\\\x=2.5-\frac{\sqrt{29}}{2}

Step-by-step explanation:

So the question here is asking you to use the quadratic formula which is expressed as: x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\

A quadratic can generally be expressed as: y=ax^2+bx+c

So using the equation you gave: 0=x^2-5x-1

We can identify the following values: a=1, b=-5, c=-1

Btw the equation explicitly write "1" as the coefficient of x, but since it's not provided it's implied that it's 1.

So plugging in the known values, we get the following equation:

x=\frac{5\pm\sqrt{(-5)^2-4(1)(-1)}}{2(1)}\\\\x=\frac{5\pm\sqrt{25+4}}{2}\\\\x=\frac{5\pm\sqrt{29}}{2}\\\\x=2.5+\frac{\sqrt{29}}{2}\\\\x=2.5-\frac{\sqrt{29}}{2}

The last step just consists of taking the + and - solution, and since it asks for exact solutions you leave the 29 under the radical, and you don't approximate. There is no further simplification that can be done here.

5 0
2 years ago
Which of the following statements is true?
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If my memory serves me well, the only wtatement which is true is the last one: <span>D) All linear equation and all quadratic equations are polynomial equations.</span>
8 0
3 years ago
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PLEASE HELP ME! GIVING AWAY POINTS!<br><br> Solve.<br><br> 2+y−8=19
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Y=25 because 19-2+8 equals 25 so y = 25
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3 years ago
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