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Why is 5 x -4 = -20 ?
Think of it as money. If I have four dollars then that's +4.
If I owe 4 that's -4. If 5 of us owe 4 that means 20 is owed = -20 dollars
a PLUS times a MINUS is a MINUS. Accept it.
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∙ 12y ago
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Solve x2 - x equals 20?
-18
Solve x squared - x equals 20?
x2 - x = 20 x2 - x - 20 = 0 (x - 5)(x + 4) = 0 x - 5 = 0 and x + 4 = 0 So, x = 5 ans x = -4
What is the ordered pair of 5x equals 4y equals -20?
5x=4y=-20 x=-4 y=-5 (-4,-5) is the ordered pair
What is 4x equals 20?
4x = 20 x = 5 (divide both sides by 4)
If you know that 4 X 5 equals 20 how can you use the Commutative order property to find 5 X 4?
That's what the communtitive property is, changing the order. like 4+5=9; 5+4=9. So 4x5=20 and 5x4=20.
Four 5 equals 30?
No, 4 x 5 equals 20.
What is 4 times something equals 20?
4 x 5 = 20 !
What is x over 4 plus 5 equals negative one?
x/4 + 5 = -1 (4)x/4 +(4)5 = -1 x+20 = -1 -20 -20 x= -21 x= -21
What is the roots of x squared equals x plus 20?
x2 = x+20 x2-x-20 = 0 (x-5)(x+4) = 0 x = 5 or x = -4
Solve x2 - x equals 20?
-18
Solve x squared - x equals 20?
x2 - x = 20 x2 - x - 20 = 0 (x - 5)(x + 4) = 0 x - 5 = 0 and x + 4 = 0 So, x = 5 ans x = -4
What time what equals negative 20?
-4 x 5
What is x when x squared plus x - 20 equals 0?
4, -5
What equals 20in multiplication?
1 x 20, 2 x 10, 4 x 5, 5 x 4, 10 x 2, 20 x 1.
What is the answer to 20x plus 5-20 equals 21x plus 4?
20x + 5 - 20 = 21x + 4 -x = 4 + 15 x = -19
Factor x squared - x equals 20?
(x+4)(x-5) = 0
X squared plus nine x plus 20 equals 0?
x2 + 9x + 20 = 0 ∴(x + 4)(x + 5) = 0 ∴x ∈ {-5, -4}
