Answer:
a = -4
b=-29
Step-by-step explanation:
<h3>Complex number:</h3>
First write the radicals in simplest form.
i² = -1



Answer:
2 11 33 41 44 49
Step-by-step explanation:
33+41=74 74÷2=37
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%
Answer:
2100
Step-by-step explanation:
30%×3000=900.
3000-900=2100