Michaela is in charge of 6 two-year olds at a daycare center. Their ages, in months, are
$25$ ,
$24$ ,
$28$ ,
$32$ ,
$29$ , and
$31$ . Find the median age.
Brian is teaching a swim class for
$6$ three-year olds. Their ages, in months, are
$38,41,45,36,40,\text{and}\phantom{\rule{0.2em}{0ex}}42.$ Find the median age.
Sal recorded the amount he spent for gas each week for the past
$8$ weeks. The amounts were
$\text{\$38.65},$$\text{\$32.18},$$\text{\$40.23},$$\text{\$51.50},$$\text{\$43.68},$$\text{\$30.96},$$\text{\$41.37},$ and
$\text{\$44.72}.$ Find the median amount.
In the following exercises, express the probability as both a fraction and a decimal. (Round to three decimal places, if necessary.)
Josue is in a book club with
$20$ members. One member is chosen at random each month to select the next month’s book. Find the probability that Josue will be chosen next month.
Jessica is one of eight kindergarten teachers at Mandela Elementary School. One of the kindergarten teachers will be selected at random to attend a summer workshop. Find the probability that Jessica will be selected.
There are
$24$ people who work in Dane’s department. Next week, one person will be selected at random to bring in doughnuts. Find the probability that Dane will be selected. Round your answer to the nearest thousandth.
Monica has two strawberry yogurts and six banana yogurts in her refrigerator. She will choose one yogurt at random to take to work. Find the probability Monica will choose a strawberry yogurt.
Michel has four rock CDs and six country CDs in his car. He will pick one CD to play on his way to work. Find the probability Michel will pick a rock CD.
Noah is planning his summer camping trip. He can’t decide among six campgrounds at the beach and twelve campgrounds in the mountains, so he will choose one campground at random. Find the probability that Noah will choose a campground at the beach.
Donovan is considering transferring to a
$\text{4-year college}.$ He is considering
$10$ out-of state colleges and
$4$ colleges in his state. He will choose one college at random to visit during spring break. Find the probability that Donovan will choose an out-of-state college.
There are
$\mathrm{258,890,850}$ number combinations possible in the Mega Millions lottery. One winning jackpot ticket will be chosen at random. Brent chooses his favorite number combination and buys one ticket. Find the probability Brent will win the jackpot. Round the decimal to the first digit that is not zero, then write the name of the decimal.
Joaquin gets paid every Friday. His paychecks for the past
$8$ Fridays were
$\text{\$315},$$\text{\$236.25},$$\text{\$236.25},$$\text{\$236.25}\phantom{\rule{0.2em}{0ex}}\text{\$315},$$\text{\$315},$$\text{\$236.25},$$\text{\$393.75}.$ Find the
ⓐ mean,
ⓑ median, and
ⓒ mode.
The cash register receipts each day last week at a coffee shop were
$\text{\$1,845},$$\text{\$1,520},$$\text{\$1,438},$$\text{\$1,682},$$\text{\$1,850},$$\text{\$2,721},$$\text{\$2,539}.$ Find the
ⓐ mean,
ⓑ median, and
ⓒ mode.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
In this morden time nanotechnology used in many field .
1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc
2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc
3- Atomobile -MEMS, Coating on car etc.
and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change .
maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
how did you get the value of 2000N.What calculations are needed to arrive at it
Jeannette has $5 and $10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
why surface tension is zero at critical temperature
Shanjida
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
s.
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=