Find a ⋅ b. a = <2, 4>, b = <2, 5>

A: <4, 9>
B: 24
C: <4, 20>
D: 16

C

Step-by-step explanation:

a=4,9

_3 _2 _1 0 1 2 3 4 5 6 7 8 9

4,9=5,6,7,8

b=2,

2,5=3,4

a.b=5,6,7,8,3,4=<4,20>

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

34

step-by-step explanation: