Answer:
56
Step-by-step explanation:
Let N be the total number of spins.
Probability of A on Red and B on Red = 0.5 x 0 .6 = 0.3 (top branch of tree)
Therefore with N spins, the estimated number of times spinner A and spinner B land on red is 0.3N and we are given this as 84
So 0.3N = 84
N = 84/0/3 = 280
The probability of spinner A on blue and spinner B on blue is 0.5 x 0.4 = 0.2 (lowest branch of tree)
For 280 spins, the estimated number of times that both spinners land on blue is given by 0.2 x 280 = 56
Answer:
1.75 %
Step-by-step explanation:
The formula for the future value (FV) of an investment is
FV =PV(1 + r/n)^nt
If the interest is calculated once a year, n = 1, and the formula reduces to
FV = PV(1 +r)^t
5550 = 5000(1 + r)⁶ Divide both sides by 5000
1.110 = (1+r)^6 Take the sixth root of each side
1 + r = 1.0175 Subtract 1 from each side
r = 0.0175 Convert to percent
r = 1.75 %
The interest rate is 1.75 %.
340 you were right
Step-by-step explanation:
Let x be the distance of the additional water stations from the starting line.
We want on that is 1.5 miles behind the 8-mile water station, and one that is 1.5 miles ahead. The following absolute value function describes x:
|x-1.5| = 8
Two numbers comply: x= 9.5 and 6.5.
The additional water stations will be 6.5 and 9.5 miles from the starting line.
