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11111nata11111 [884]
2 years ago
13

Brainliest to whoever gets it right please answer the picture.

Mathematics
1 answer:
sesenic [268]2 years ago
5 0

Answer:

Commutative property of multiplcation.

Step-by-step explanation:

An identifier for the property of multiplcation is by multiplying it by 1. Therefore the answer remains the same.

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Solve 5x2-2x-8=0 using the quadratic formula.
choli [55]

Answer:

x=\frac{1+\sqrt{41}}{5},\\x=\frac{1-\sqrt{41}}{5}

Step-by-step explanation:

The quadratic formula states that the solutions for a quadratic is standard form ax^2+bx+c are equal to x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}.

In 5x^2-2x-8=0, we can assign the values:

  • a of 5
  • b of -2
  • c of -8

Thus, we have:

x=\frac{-(-2)\pm \sqrt{(-2)^2-4(5)(-8)}}{2(5)},\\x=\frac{2\pm \sqrt{164}}{10},\\\begin{cases}x=\frac{2+ \sqrt{164}}{10}, x=\frac{1}{5}+\frac{\sqrt{41}}{5}=\frac{1+\sqrt{41}}{5}\\x=\frac{2- \sqrt{164}}{10}, x=\frac{1}{5}-\frac{\sqrt{41}}{5}=\frac{1-\sqrt{41}}{5}\end{cases}

6 0
3 years ago
Read 2 more answers
Evaluate <br> 2a+4b<br> a=2 and b = -1
Leona [35]
2(2)+4(-1)=4+-4=0, so your answer is 0 hope this helps
8 0
2 years ago
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In the diagram below of right triangle ACB, altitude CD is drawn to hypotenuse AB.
WITCHER [35]
I think the answer maybe will be 3)5 and the reason why Is because
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The cashier has been directed to sell an item for half off its regular price of$1.98.what is the sale price
galben [10]
$1.98 divided by 2 is $0.99
So the sale price is $0.99
4 0
3 years ago
Spent Withdrew, Down,Decrease all have negative values
musickatia [10]

True, all of them represent a negative number, for example:

You have $60 and you spent $10, the remaining money is:

60-10=50

Your savings are $1000 and you make a Withdrawal of $500:

1000-500=500

In other words for calculation purposes, they all have negative values

6 0
1 year ago
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