The equation y = 4x represents the relationship between time, x, and distance traveled, y. Which graph represents this relationship?
50
45
40
35
30
25
20
15
10
51
20
18
16
14
12
10
8
8
4
10
9
8
7
6
10
9
8
7
6
o
4
3
20
6 7 8 9 10
6 7 8 9 10
1 2 3 4 5 6 7 8 910
1 2 3 4 5 6 7 8 9

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

he has 140 chickens because he has 10 times more chickens than ducks and he has 14 ducks so 14*10=140

666

step-by-step explanation: