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4 years ago

What numbers add up to -9 but multiply to 8?

Mathematics

2 answers:

EleoNora [17]4 years ago

7 0

The numbers -8 and -1 can do that.

KiRa [710]4 years ago

5 0

Answer:

-8 & -1

Step-by-step explanation:

Let the numbers be x and y

x+y = -9 (1)

xy = 8 (2)

(1) x = -9-y

(2) (-9-y)y = 8

-9y-y² = 8

y²+9y+8 = 0

y²+8y+y+8 = 0

y(y+8)+1(y+8) = 0

(y+8)(y+1) = 0

y = -8 , -1

x = -9-y

If y = -8, x = -9-(-8) = -1

If y = -1, x = -9-(-1) = -8

Either ways, the numbers are -8 & -1

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3 years ago

Using the scale 1/2 inch = 100 miles, figure out the number

Wittaler [7]

Answer:

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Step-by-step explanation:

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2 years ago

What curve passes through the point (1 ,2) and has an arc length on the interval [2,6] given by Integral from 2 to 6 StartRo

Georgia [21]

Answer:

Step-by-step explanation:

Given

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comparing two we get

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$\int dy=\int 8x^{-3}dx$

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3 0

3 years ago

Can 5ft 9ft 14ft make a triangle?

ss7ja [257]

Answer:

Any dimensions can make a triangle, however

this does not make a right angled triangle.

Step-by-step explanation:

Determine the length of the hypotenuse of a right angle triangle with side lengths 5ft and 9ft by using the formula:

$a^2+b^2=c^2\\$

$\sqrt{a^2+b^2} = c$

$c=10.29$

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3 years ago

Read 2 more answers

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Lyrx [107]

Answer:

Step-by-step explanation:

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3 years ago