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3 years ago

What is the number gonna be if you divide a negative by a negative?

Mathematics

1 answer:

mina [271]3 years ago

8 0

If you divide a negative by a negative, your result will be positive.
For example, -5/-1=5.

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Use the discriminant to find the number and type of solution for x^2+6x=-9

likoan [24]

Answer:

D = 0; one real root

Step-by-step explanation:

Discriminant Formula:

$\displaystyle \large{D = {b}^{2} - 4ac}$

First, arrange the expression or equation in ax^2+bx+c = 0.

$\displaystyle \large{ {x}^{2} + 6x = - 9}$

Add both sides by 9.

$\displaystyle \large{ {x}^{2} + 6x + 9 = - 9 + 9} \\ \displaystyle \large{ {x}^{2} + 6x + 9 = 0}$

Compare the coefficients so we can substitute in the formula.

$\displaystyle \large{a {x}^{2} + bx + c = {x}^{2} + 6x + 9 }$

a = 1
b = 6
c = 9

Substitute a = 1, b = 6 and c = 9 in the formula.

$\displaystyle \large{D = {6}^{2} - 4(1)(9)} \\ \displaystyle \large{D = 36 - 36} \\ \displaystyle \large{D = 0}$

Since D = 0, the type of solution is one real root.

6 0

3 years ago

4x-2y=-2<br> 3x+2y=-12<br><br> Solve by using elimination

andreyandreev [35.5K]

Point form: (-2,-3)
Equation form: x=-2, y=-3

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3 years ago

100%

mamaluj [8]

Answer:

44.4%

Step-by-step explanation:

FIND THE TOTAL NUMBER OF BALLOONS

4 red +6 blue +3 yellow +5 orange =18

( ORANGE +YELLOW /TOTAL × 100 %)

8/18 × 100%= 44.4 % CHANCE

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3 years ago

Someone help me out my grade are bad

nataly862011 [7]

Answer:

0.4

Step-by-step explanation:

hope this helps :)

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In Mr. Ferreia's class, 80% of the students live more than half a mile from school. Of those students, 80% come to school by pub

romanna [79]

Answer:

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Step-by-step explanation:

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3 years ago

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