Answer:
5.16
Step-by-step explanation:
Since after x=3, value of y starts decreasing for increasing values of x, let's choose. Also we need to find f(x) for x=3.4
x=3,4,5 and f(x)=7,3,1 to find lagrange polynomial
P(x)= ((x-x2)(x-x3)y1)/((x1-x2)(x1-x3) + ((x-x1)(x-x3)y2)/((x2-x1)(x2-x3) + ((x-x1)(x-x2)y3)/((x3-x1)(x3-x2)
P(x)= ((x-4)(x-5)7)/((3-4)(3-5)) + ((x-3)(x-5)3)/((4-3)(4-5)) + ((x-3)(x-4)1)/((5-3)(5-4))
P(x)= x² -11x+31
P(3.4)= 5.16
Rate for Sally is 1 room per 8hrs
rate for Steve is 1 room per 7hrs
combined rate:
1/8 + 1/7 = 1/T
7/56 + 8/56 = 1/T
15/56 = 1/T
56/15 = T
3 11/15 = 3 hrs 44 min
Answer:
1.6 Miles every hour
Step-by-step explanation:
6.4m÷4h=1.6m every h
Answer:
Step-by-step explanation:
there is 8x3=24 and 12x2=24 and there is 6x4=24 and there is 1x24
there is 1x32 16x2 8x4
Answer:
1152000 ft or 218.18 miles
Step-by-step explanation:
6400 x 60 (60 minutes in an hour) = 384000 ft
384000 = one hour at top speed
384000 x 3 = 1152000 ft (3 hours at speed)
There is 5280 feet in a mile
1152000 / 5280 = 218.18 miles
brainliest if this was helpful
