Homework answers and tutorials

Waiting for answer How do I find 2/3 of a whole number?
##2/3*x/1## with ##x## being the whole number To find ##2/3## of a whole number, you would multiply the whole number by ##2/3##. Example: To find ##2/3## of 5 you would do ##2/3*5/...
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Waiting for answer How do you simplify radical 8?
You can simplify radicals using the rule: ##root()(ab) = root()(a)root()(b)## We look for ways of splitting up the number 8 into two factors where one of the factors is a square number. Like this: ##root()(8) = root()(4)root()(2) = 2root()(2) ##
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Waiting for answer How do you convert feet into meters and centimeters?
You may use the conversions factors to process from feet to inches to centimeters to meters. 1 ft = 12 in 1 in = 2.54 cm 100 cm = 1 m An example How many meters are in 10 ft. ##10 ft## x ##(12in)/(1ft )## x ##(2.54 cm)/(1 in)##= ##304.8cm## then ##304.8 cm## x ##(1 m)/(100 cm)## = ##3.048 m##...
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Waiting for answer What does wavelength, frequency, and inverse relationship me...
Wavelength = The Length of a wave Frequency = How many waves pass in a second Inverse Relationship = As one thing goes up, the other goes down Wavelengths are a literal distance, usu...
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Waiting for answer Suppose that X is a discrete random variable with probabilit...
##c = 10/3## ##E(x) = sum x* P(x)## Properties of p.d.f. include ##sump(x) = 1## ##sum P(x) = 1 ## = ## c[1 +4 + 9 + 16 ] = 1 ## = ##30c = 1 ## = ## c = 1/30.E(x) ## ## =...
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Waiting for answer How do you use the geometric sequence formula to find the nt...
A geometric sequence is always of the form ##t_n=t_"n1"*r## Every next term is ##r## times as large as the one before. So starting with ##t_0## (the "start term") we get: ##t_1=r*t_0## ##t_2=r*t_1=r*r*t_0=r^2*t_0## ...... ##t_n=r^n*t_0## Answer: ##t_n=r^n*t_0## ##t_0## being the start term, ##r...
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Waiting for answer What do light dependent reactions of photosynthesis need to...
ATP and reduction potential NADPH2 are produced in the light reaction are necessary to drive dark reaction where CO2 is reduced tp carbohydrate using light generated ATP and NADPH2
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Waiting for answer Can a rectangle be a rhombus?
Only if the rectangle is a square A rectangle is a parallelogram with all its interior angles being 90 degrees. A rhombus is a parallelogram with all its sides equal. This means th...
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Waiting for answer Why do inner planets orbit the sun faster than the outer pla...
Let me begin by thanking you of your question. I had never realised that it was so. Hence, I simply went to Wikipedia and checked the facts. Yes, you are right. Planets revolve at decreasing orbital velocities as they get further away from . Mercury turns at approximately 47 km per second, Earth...
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Waiting for answer What are arterioles? What are their functions?
Arterioles are tiny arteries that branch into capillaries. Their function is for the regulation of blood flow as it arrives into the different body organs / parts. What I mean about...
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Waiting for answer What is the oxidation state of chromium in the dichromate io...
+6 Problem: What is the oxidation number (O.N.) of chromium (Cr) in the dichromate ion ##"Cr"_2"O"_7"^(2)##? Let the O.N. of Cr be ##x##. The O.N. of oxygen is 2. The sum of the...
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Waiting for answer What is the mass of 3 molecules of ##"NaOH"## in a.m.u ?
##"119.991 u"## The first thing to note here is that you're dealing with an , which means that you're actually looking for the mass of ##3## formula units o sodium hydroxide, ##"NaOH...
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Waiting for answer Why does ##cos(90  x) = sin(x)## and ##sin(90  x) = cos(x)...
Note that the image below is only for ##x## in Q1. If you wish you should be able to draw it with ##x## in any quadrant. Definition of ##sin(x)## (side opposite angle x)/hypotenuse Definition of ##cos(90^o x)## (side adjacent to angle (##90^ox##))/hypotenuse but (side opposite angle x) ##=## (...
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Waiting for answer How many teeth does the average human have?
An adult human will have 32 teeth. 16 on the upper jaw and 16 on the lower jaw. They are categorized as Incisors, Canines, PreMolars and Molars
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Waiting for answer What is rate constant and what is specific rate constant?
Consider a simple reaction involving substance ##A##: ##Ararr"products"## Reactions tend to be fast at the beginning when concentrations are high and then slow down to zero when the reaction is complete. If we measure the concentration of ##A## as the reaction proceeds and plot the results agains...
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Waiting for answer A student is given a sample of a green nickel sulfate hydrat...
The mass of the hydrate was 1.082 g . FULL QUESTION A student is given a sample of a green nickel sulfate hydrate. She weighs the sample in a dry covered crucible and obtains a ma...
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Waiting for answer What is a simile? What is a metaphor? What is a hyperbole? W...
see below Simile, metaphor, hyperbole, and personification are all figures of speech. Simile compares one thing with another thing that is of a different kind. It uses "like" or "a...
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Waiting for answer What is the limiting reagent in grignard reaction?
The limiting reagent in a Grignard reaction is usually the substance to which you add the Grignard reagent, but you have to confirm this by calculation. EXAMPLE Assume that, in a...
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Waiting for answer How do cocci and bacilli differ in morphology?
The difference in morphology of cocci and bacilli lies in shape of the bacterium. Cocci and bacilli differ in their shape. Cocci are spherical in shape: whereas bacilli are rodshaped. Cocci are usually aflagellate, i.e. lacking flagella. Bacilli may be aflagellate or flagellate. The n...
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Waiting for answer How to determine which of the following functions are oneto...
See explanation... A. ##f## is not oneone. The function maps all the points of ##RR^3## to the plane ##x+y+z = 0##. For example: ##f(1, 1, 1) = (11, 11, 11) = (0, 0, 0) = (22...
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