Hello! Your answer was 19! There is no possible way for me to show you how to work this out using base ten blocks! Hopefully you can work it out in your head next time! :)
Answer:
v=-3/5
Step-by-step explanation:
9 = v + 4 v + 12
=>5v=9-12
=>v=-3/5
A=P(1+r/100)^n
A=500(1+4/400)^24
A=500(1.01)^24
A=634.87
According to empirical rule, the area under the normal distribution or "bell-shaped curve", when plotted as a function of the z-parameter can be defined in terms of percentages.
The z-parameter (or z-score) is defined as

where
x = value of random variable,
μ = the mean,
σ = standard deviation,
The total area under the curve = 1.
The curve below shows that within 2 standard deviations from the mean, the total area under the curve is 95% of the total area.
Answer:
95%