Answer:
αβ=c/a
α+β=-b/a
α+β=-k/2
-(α+β)²=k
-α²-2αβ-β²=k
-α²-2(1/2)-β²=k
-α²-1-β²=k
Step-by-step explanation:
Answer:
3:16
Step-by-step explanation:
5 red marbles.
16 black marbles.
3 green miniature balls.
9 yellow miniature balls.
We want to determine the ratio of the number of the minimum balls to the number of black marbles in the jars.
The minimum of a set of a number is the lowest value in that set of number. e.g. the minimum of 2,5,1 and 6 is 1.
Minimum Number of balls=3
Number of Black Marbles=16
Ratio of the number of the minimum balls to the number of black marbles in the jars is therefore given as:
3:16
3.225
to check just find 10% of 21.50 (2.15) and 5% of 21.50(1.075)
Answer:
Explanation:
12x = 48 - 8y
10x + 8y = 38
———————
12x + 8y = 48
10x + 8y = 38
———————
12x + 8y = 48
-1(10x + 8y = 38)
————————
12x + 8y = 48
-10x - 8y = -38
————————
2x = 10
x = 10/2 = 5
If x = 5 then:
10x + 8y = 38
10(5) + 8y = 38
50 + 8y = 38
8y = 38 - 50
8y = -12
y = -12/8
y = -3/2
Therefore, x = 5 and y = -3/2
