Homework answers and tutorials

Waiting for answer How do you simplify square root of 128 + the square root of...
128 and 32 can further be simplified using the factor tree, √128 can be simplified to 8√2 and √32 is simply 4√2. therefore 8√2 + 4√2 = 12√2 [twelve square root of two] (since the two share the same exact radical, you can add them to get the final answer)
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Waiting for answer Does a hepatic function panel lab test detect hepatitis C?
Not directly. It only identifies potential damage to a liver. LFT's (Liver Function Tests) only give a snapshot of certain liver enzymes that can detect a potentially (or continuou...
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Waiting for answer 3/4 lbs is equal to how many ounces?
##12## ounces. As one pound is equal to ##16## ounces, ##3/4## pound is equal to ##16xx3/4=(4cancel(16))xx3/(1cancel4)=12## ounces.
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Waiting for answer What is carbon fixation, and how does it relate to photosynt...
Just did this in school recently._xD83D__xDE42_ In the Calvin Cycle, the inorganic carbon in ##CO_2## is incorporated into organic molecules, initially glycerate 3phosphate (GP). Th...
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Waiting for answer How do you find the area of a isosceles triangle with base 1...
##60## ##"square units"## I have two solutions for you, using the formulas, ##A=1/2"*base*height=1/2bh## and using  ##A=sqrt(s(sa)(sb)(sc))## where: ##a, b and c = ## sides...
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Waiting for answer What is the extreme value of a quadratic function?
A quadratic function ##f(x)=ax^2+bx+c## has an extreme value at its vertex, so if ##a 0##, then ##f(b/a)## is the maximum, and if ##a 0##, then ##f(b/a)## is the minimum.
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Waiting for answer The radius of a circle is 6.5. What is the diameter, circumf...
See solution below Diameter: The diameter is always double the length of the radius. Assuming d represents diameter: d = 6.5(2) d = 13 The diameter of the circle measures 13....
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Waiting for answer How does the base pairing rule affect DNA replication?
Base pair in DNA replication is a way that the chromosomes have to double check to make sure that the duplication is exact. Base pair in is a way that the chromosomes have to doubl...
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Waiting for answer The systematic (IUPAC) name for the amino acid threonine is...
Here's how I would draw the Fischer projection of threonine. Step 1. Draw the structural formula of threonine. Step 2. Draw the longest continuous chain of carbon atoms vertically, with ##"COOH"## at the top. Draw horizontal lines to make crosses at ##"C2"## and ##"C3"##. Step 3. Attach at...
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Waiting for answer What are six types of neuroglial cells?
Oligodendrocyte, Schwann cell, Ependymal cell, Microglia, Satellite cell and Astrocyte (fibrous protoplasmic) The glial cells are 10 times more abundant than neurons in our brain....
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Waiting for answer How do you convert 28.0 centimeters to meters with the corre...
The measurement 28.0 cm has three . To convert this to meters you need to divide 28.0 by 100 (because 1m = 100cm). The answer is 0.280 with the 0 at the far right being considered a significant figure because it comes to the right of the decimal point after nonzero digits. I am assuming when you...
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Waiting for answer How many chromosomes are in the daughter cells produced from...
It depends on the process: : same amount of chromosomes. This is done in any kind of cell. : half the amount of chromosomes. This is done in sexual cells.
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Waiting for answer What is the valency of alkaline earth metal?
Alkaline earth metals have a valency of 2 . Alkaline earth metals are located in group 2 of the , which implies that they each have 2 electrons in their outermost shells. The ele...
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Waiting for answer Can an invertible matrix have an eigenvalue equal to 0?
No. A matrix is nonsingular (i.e. invertible) iff its determinant is nonzero . To prove this, we note that to solve the eigenvalue equation ##Avecv = lambdavecv##, we have that ##lambdavecv  Avecv = vec0## ##= (lambdaI  A)vecv = vec0## and hence, for a nontrivial solution, ##lambda...
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Waiting for answer How to draw lewis structure NH3?
How many electrons from the individual : 3 from the hydrogen, and 5 from the nitrogen. So ammonia, ##NH_3##, has 8 to distribute. 6 electrons are utilized for the 3 ##NH## bonds,...
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Waiting for answer What are the names of three layers of the heart wall?
Endocardium Myocardium Pericardium (or epicardium) The heart is a muscular organ that contracts rhythmically pumping the blood through the . Its walls consist of of three tunics or l...
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Waiting for answer An aqueous solution of lead II phosphate is added to an aque...
##PbHPO_4(aq) + 2KI(aq) rarr PbI_2(s)darr + KH_2PO_4## This question is unfortunate as phosphate salts tend to be as soluble as bricks, and lead phosphate, ##Pb_3(PO_4)_2## would be...
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Waiting for answer ##CaCO3 + 2HCl > CaCl2 + H2O + CO2## If it takes 0.0456...
a.) The mass of CaCO₃ is 2.28 g. b.) The mass % of CaCO₃ is 91.3 %. Part a.) is a problem. You must make the following conversions: moles of HCl → moles of CaCO₃ → mass of CaCO₃ The balanced equation is CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O Mass of CaCO₃ = 0.0456 mol HCl × ##(1"mol CaCO₃")/(2"mol...
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Waiting for answer Why is the periodic table organized by atomic number rather...
It's because with similar atomic numbers have similar properties. You know that there are several types of elements. Nonmetals, noble gases, alkaline metals, etc. They are formed i...
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Waiting for answer What is the antiderivative of ##(sin(x))^2##?
## = 1/2 (x 1/2 sin 2x) + C## use the handy doubleangle formula ##cos 2A = cos^2 A  sin^2 A## ##= 2 cos^2 A 1## ##= 1  2 sin^2 A## last one gives us ##sin^2 A = 1/2(1 cos 2A...
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