Answer: witch one?
Step-by-step explanation:
Answer:
Width = 25
Length = 58
Step-by-step explanation:
Let the width = w
Length = 2w + 8
2(w + 2w + 8) = 166 Combine terms in the brackets
2(3w + 8) = 166 Divide both sides by 2
(3w + 8) = 83 Subtract 8 from both sides
3w = 83 - 8
3w = 75 Divide by 3
w = 25
L = 2*25 + 8 Find the Length
L = 50 + 8 = 58
Answer:
the duration of this event is 4 hours
Step-by-step explanation:
This function is a quadratic one
let Δ be the dicriminant :
- a = -16
- b = 48
- c= 64
- Δ = 48²-4*(-16)*64 = 6400
so there are two values that satisfy -16t²+48t+64 = 0 x and y
- x= (-48+80)/-16*2 = -1
- y= (-48-80)/-16*2= 4
x<0 so w won't take it since time is a positive value here
so t = y = 4h
I think the group 2 survey is likely to be biased towards people who are not too keen on zoos since all the values are small.
From group 1 and 3 the mean number of visits are
(4 + 10 + 6 + 3 + 8 + 7 + 9 + 3 + 4 + 7) / 10
= 61/10
mean = 6
