Answer:
Step-by-step explanation:
we know that
The explicit formula for a geometric sequence is written as:
where
a_1 is the first term
r is the common ratio
we have the sequence
so
therefore
substitute
Answer:
Lynn's answer 38 is correct
2(-4)^2+6
2(16)+6
32+6=38
Step-by-step explanation:
Answer:
It will take 4 hours to dig in the garden
Step-by-step explanation:
First we have to calculate the diameter, for this we will use the formula to calculate the circumference of a circle and we will clear the diameter
d = diameter
π = 3.14
c = circumference
c = π * d
d = c / π
d = 88yd / 3.14
d = 28.025yd
round to the nearest whole number
28.025 = 28
d = 28yd
To know how many hours it takes, we divide the diameter by the speed
t = time
v = velocity
t = d / v
t = (28yd) / (7yd/h)
t = 4h
It will take 4 hours to dig in the garden
D will be The Diameter goes straight across the circle, through the center. The Circumference is the distance once around the circle.