Answer:
4-9=-5
Step-by-step explanation:
do the work you get that
2+6+18+54+162+486+1458+4375=6561
you multiply the previous number by three to find the next value
Answer:
Step-by-step explanation:
we have
Remember that
To predict a value for y, when x = 4
substitute the value of x in the equation
so
<span>1st train DATA:
rate = 50 mph ; time = x hrs ; distance = rt = 50x miles
2nd train DATA:
rate = 55 mph ; time = (x-(1/2)) hrs ; distance = rt = 55(x-(1/2)) miles
Equation:
distance = distance
50x = 55(x-(1/2)
50x = 55x - (55/2)
-5x = -55/2
x = 11/2
x = 5 1/2 hrs (time at which the 2nd train overtakes the 1st train)
Hope this helps!</span>
Step-by-step explanation:
how many feet of fence is he doing