cos ? = 5/9
cos ^-1 = about 56.25
Answer:
A+C.................................................
Answer:
8/4 or just 2
Step-by-step explanation:
3/4 + 1/2 + 3/4 = 4/8
but 4/8 simplified get you 2
So I think you should set up an equation like this: 14.95x+16.88y=131.18 , x+y=8
so x=8-y, plug this into the original equation:
14.95(8-y)+16.88y=131.18
Evaluate: 119.60-14.95y+16.88y=131.18
Combine like terms: 119.60+1.93y=131.18
Subtract 119.60 from both sides. You get: 1.93y=11.58
Divide both sides by 1.93. You get y=6
Plug into second equation: x+y=8 ---> x+6=8 and solve for x. x=2
Christine bought 2 video games and 6 CDs. 14.95(2)+16.88(6)=131.18
Answer:
C. mean: 6.4 and standard deviation: 2.31862028
Step-by-step explanation:
We are given
n=40
p=0.16
q= 1-p = 0.84
mean = np = 40*0.16 = 6.4
standard deviation =
= 
sd = 2.31862028