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ololo11 [35]
3 years ago
12

What’s the square root of -100

Mathematics
1 answer:
Alla [95]3 years ago
4 0

Answer: -10

Step-by-step explanation:

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In a right triangle, one of the legs is 5 cm smaller than the hypotenuse, and the other leg is 10 cm smaller than the hypotenuse
nata0808 [166]

Answer:

25 cm.

Step-by-step explanation:

If the hypotenuse is  x cm long the 2 legs are  x-5 and x-10 cm long.

So by the Pythagoras theorem:

x^2 = (x - 5)^2 + (x - 10)^2

x^2 = x^2 - 10x + 25 + x^2 - 20x + 100

x^2 - 30x + 125 = 0

(x - 5)(x - 25) = 0

x = 5, 25

We can discard x = 5 because that would make the lengths of the legs negative so the hypotenuse = 25 cm long.

3 0
3 years ago
Which shows one way to determine the factors of x3 – 9x2 5x – 45 by grouping?
GalinKa [24]
<span>x(x2 5) – 9(x2 5) 
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3 years ago
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8090 [49]

Answer:

x= 30

Step-by-step explanation:

3x + 50 = 140

3x = 140 -50

3x = 90

x = 90/3

x = 30

3 0
2 years ago
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What is 145 ÷ 891 + 153 ÷ 141 + 1/1?
ruslelena [56]

Answer: Exact form: 94133 / 41877. Mixed number form: 2 10379 / 41877

Step-by-step explanation: divide 145 and 891. Then add 153. Then divide again 141 and 153. Then add 1/1.

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7 0
3 years ago
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Help, thank you!
kaheart [24]

Answer:

√357

Step-by-step explanation:

multiply all three numbers together and since 357 cannot be simplified it stays as a radical

8 0
3 years ago
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