Answer:i believe it is 5.7
Step-by-step explanation:
#1: 4*5 + 4*6=20+24=44
#2: 4*(5+6)=4*11=44
X(7-x)>8 perform indicated multiplication on left side
7x-x^2>8 divide both sides by -1
x^2-7x<-8 halve the linear coefficient, square it, and add it to both side ie (-7/2)^2=12.25
x^2-7x+12.25<4.25 now the left side is a perfect square
(x-3.5)^2<4.25 take the square root of both sides
x-3.5<±√4.25 add 3.5 to both sides
x<3.5±√4.25
So x>3.5-√4.25 and x<3.5+√4.25 or if you want approximations
x>1.44 and x<5.56 or in interval notation:
x=(1.44, 5.56) (to nearest hundredths)
The model to use here is y = k/x.
If g =18 when r = 4, then 18 = k/4. Solving for k, k = 72.
Then g = 72/r. If r = 6, g = 72/6 = 12 (answer)