The vectors, (2, -1) and (4, 8), are 1)parallel 2)perpendicular 3)neither parallel or perpendicular
Write the complex number z = 2 + 5i in polar form, rounding to the nearest hundredth if needed.
Convert the complex number c=3cis 0.25 into rectangular form.
Write the complex number z = −6 in polar form
The cost of 4 scarves and 6 hats is $52. The cost of two hats is $1 more than the cost of one scarf. What are the costs of one scarf and one hat? Please show me how to set this up and work it.
the energy that can extracted from a storage battery is always less than the energy that goes into it while it is being charged. why?
2/2.5 = 0.8 z=0.7881 1-0.7881 = 0.2119
The lengths of pregnancies are normally distributed with a mean of 273 days and a standard deviation of 20 days. If 64 women are randomly selected, find the probability that they have a mean pregnancy between 273 days and 275 days.
-2 z=0.0228 1-0.0228 answer 0.9772
54.5-50/50 = 4.5/5 = 0.9 z= 0.1841
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