I enjoy learning and want to help others learn also. I love to read various subjects, computers, running, and observing nature.
cost of Natural Gas In April $2009,$ Nicor Gas had the following rate schedule for natural gas usage in single family residences:Monthly customer charge 8.40 dollarsDistribution charge 1st 20 therms 0.1473 therm Next 30 therms 0.0579 dollarstherm Over 50 therms $0.0519 /$ thermGas supply charge0.43 dollars therm(a) What is the charge for using 40 therms in a month?(b) What is the charge for using 150 therms in a month?(c) Develop a model that gives the monthly charge $C$ for $x$ therms of gas.(d) Graph the function found in part (c).
In Module 31.1 , several lines of investigation are used to investigate the time and location of the domestication of important crops. Which line of evidence do you consider the most reliable? Why?
When and where did agriculture first arise? What role did genetics play in the development of the first domest icated plants and animals?
In which phases of mitosis and meiosis are the principles of segregation and independent assortment
A line of mouse cells is grown for many generations in a medium with $^{15} \mathrm{N}$. Cells in $G_{1}$ are then switched to a new medium that contains $^{14} \mathrm{N}$. Draw a pair of homologous chmmosomes from these cells at the following stages, showing the two strands of DNA molecules found in the chmmosomes. Use different colors to represent strands with $^{14} \mathrm{N}$ and $^{15} \mathrm{N}$.a. Cells in $G_{1}$, before switching to medium with $^{14} N$b. Cells in $G_{2}$, after switching to medium with $^{14} N$c. Cells in anaphase of mitosis, after switching to medium with $^{14} \mathrm{N}$d. Cells in metaphase I of meiosis, after switching to medium with $^{14} \mathbf{N}$e. Cells in anaphase II of meiosis, after switching to medium with $^{14} \mathbf{N}$
A car dealership sells three different models of trucks: theRugged Model, the Sport Model, and the Heavy Duty Model. Thedealership recently surveyed their new truck owners and found that61 % of the Rugged Model owners, 75 % of the Sport Model owners,and 89 % of the Heavy Duty Model owners were satisfied with theirpurchase.Of the new truck owners, 20 % had purchased the Rugged Model, 30% had purchased the Sport Model, and the remaining 50 % hadpurchased the Heavy Duty Model.Find the percent of new truck ownerswho were not satisfied with theirpurchase.
The dose of a drug is critical. Too small a dose may not treat apatient effectively, while too much can cause serious sideeffects.A nurse must give a patient 50 mg of a drug for each kilogram ofthe patient's mass. If a patient weighs ,198 1bs. how manymilligrams of the drug should be given? Use and do not round anycomputations.
What are the major advantages for using RNA-seq than usingmicroarray to measure gene expression?a) RNA-seq can more accurately measure expression level forthose highly abundant transcripts.b) All of the above.c) RNA-seq can detect novel transcripts without the informationof genome or transcriptome sequences.d) RNA-seq has low noise which can better quantify thetranscripts with low abundance.
A safe dose rate for paracetamol in infants is 15 mg per kg in asingle dose. This means that a 15 kg child could safely be given225 mg of paracetamol in a single dose. A liquid solution ofparacetamol contains 120 mg of paracetamol per ml of liquid. Howmany ml of liquid could you safely give a 43 kg child in a singledose?
A cord of loose firewood measures 4ft x 4ft x 8ft. The bed of anF- 150 pick-up truck measures 78.9 inches in length, 50.6 inches inwidth and is 21.4 inches high. Will the truck bed hold a cord ofwood? if so, how much extra space will there be in the bed; ifnot, by how much does the volume of wood exceed the truckbed's capacity?
Find an equation of the line d which passes through A (47; -206)and B (607; 4). Determine the intersection of d with each axis andwith the line d' which passes through points A' and B ', obtainedby exchanging the coordinates of A and those of B.
