Posts by ann

Total # Posts: 1,493

Math
A bike wheel has a radius of 40 inches. If Mary rides the bike 1 mile (63,360mi.), approximately how many times has the wheel rotated?

Math
A bike wheel has a radius of 40 inches. If Mary rides the bike 1 mile (63,360mi.), approximately how many times has the wheel rotated?

Math
When a group of 50 consecutive multiples of 7 is added the answer is 12 075. i) What is the smallest of these numbers? ii) What is the largest of these numbers?

math
Estimate 420,983 + 39,932

science
A chemical change produces a new substance, while physical changes don't. In the case of the alcohol evaporating, it's still alcohol in the end, but it's now a gas. With the steam rising, it's it's still water. The wood loses some water but it's still ...

forensic
__________________ appear to match in one set of lighting conditions, but not in another. Dyes Pigments Metameric colors Simultaneous contrast colors Fluorescent fibers

Chem
Which statement is true when considering color in a fiber? the color is measured using an FTIR the color depends upon the lighting source the color is always a result of a pigment in all fibers there are very few color dyes that can be used for fibers none of the above are true

forensic science
Why is the cross section of a fiber important? it is a distinctive trait of only natural fibers It is a distinctive trait of only synthetic polymer fibers it can vary significantly with the fiber it provides athe basis for the Beck line it determines the final color of the fibe

MATH
which channels is the most popular one for the evening news? WKOD 13%, WCLM 24%, WWCN 41% WANR 22% ?

math
Find the value of 8.3x 24.2x0.03. Round your answer to the nearest hundredth.

math
Find the value of 8.3x 24.2x0.03. Round your answer to the nearest hundredth.

Chem
Select sequence that corresponds to the following: CTCGA TTAAGG CTCGG AATTCC GAGCT GAGGAG

forensic
Which of the following is true about RFLP? (multiple answer) the repeat strands are very short it analyzes only mitochondrial DNA it involves amplifying DNA restriction enzymes are used to cut the DNA at the ends of the repeat sites length polymorphism is used to distinguish ...

forensic science
Select the correct order of the GC components Column, Recorder, Carrier Gas, Flow Controller, Detector Recorder, Carrier Gas, Column, Detector, Injector port Injector port, Carrier Gas, Detector, Recorder Carrier Gas, Column Oven, Flow Controller, Detector Carrier Gas, Flow ...

Chem
What is the difference between adsorption and partition chromatography? A. absorption is faster? B. partitioning is faster C. absorption can only be used with gaseous analytes D. partition can only be used with gaseous analytes E. one typically uses two immiscible liquids with...

forensic science
yes

forensic science
What type of substance is the mobile phase in gas chromatography? a polar liquid a nonpolar liquid a mixture of two liquids to create the correct polarity a polar gas an inert gas like nitrogen my answer is an insert gas like nitrogen

forensic science
Quantization is Interaction of electromagnetic radiation and matter at discrete energy levels The ion separator in a mass spectrometer Chemical ionization The bombardment of an analyte by a stream of energetic electrons Inelastic scattering My answer is the bombardment 3 amswer

Forensic science
The_____________spectrum is so complex it is considered to be unique: Visible Ultraviolet Infrared Microwave Fluorescence

forensic science
"In fluorescence microscopy, the wavelength of the emitted light is __________that of the exciting radiation." Longer than Shorter than Equal to Either longer or shorter than Impossible to determine My answer is Longer than am I correct

Chem
The objective lens of a compound microscope has a numerical aperture of 0.4. The maximum useful magnification of the microscope is: 400x 1,000x 10x There is not enough information given to calculate this the correct answer is not given

forensic
Select the proper order of examination "Fingerprints, trace evidence, DNA" "Disease diagnosis, DNA, fingerprints" "Ink analysis, content analysis, DNA" "Handwriting, ink analysis, DNA" None of the above my answer is the first one

forensic science
Colored chips found on the road are determined to be red car paint

forensic science
Identification is the examination of chemical and physical properties of an object and using the results to categorize the object as a member of a group. Which of the following are examples of identification? Determination that hairs found on a bag are from a cat Determination...

forensic science
What is a trier of facts? Only a trial by a jury the party or parties determining guilt or innocence only a trial by a US Superior Court magistrate the determination of guilt or innocence by an elected official the complete summary of all evidence in a case

microbes and society
Sterilization refers to the: a. complete destruction or removal of all forms of life. b. elimination of pathogens only. c. destruction of microbial spores only. d. killing of bacteria only. e. killing of all microbes except for viruses. i believe it is C

MICROBES AND SOCIETY
Which of the following applies to the adenoviruses a. cause high fever, sore throat, and severe cough. b. The viruses are involved in liver diseases. c. Most adenoviruses are transmitted by contaminated arthropods. d. The viruses have a close association with Reye's ...

Math
If you flip three fair coins, what is the probability that you'll get a head on the first flip, a tail on the second flip, and another head on the third flip?

Psychology
which of the following is a possible statistically significant outcome from a 2x2 factorial design. A. The other three choices are all possible outcomes . B. Two main effects and an interaction . C. no main effect for either factor but an interaction D. two main effects and ...

Research 1
which of the following is a possible statistically significant outcome from a 2x2 factorial design. A. The other three choices are all possible outcomes . B. Two main effects and an interaction . C. no main effect for either factor but an interaction D. two main effects and ...

Statistics
The admissions counselors at rainy University believe that the freshman class they have just recruited is the brightest yet. If they want to test this belief (that the freshmen are brighter than the other classes), what are the null and alternative hypotheses? Is this a one- ...

Business Math
split level for 200,000 put down 30% assuming rate of 11 1/2% on 30-year mortgage, determine monthly payment.

math
the trip from town A to town B was travel at 5 km/h, and the trip back at 4 km/h. What was the average speed?

math
write triangular formulas to find numbers between 10 and 30

Math
A play has two roles for men and four roles for women if five men and 12 women tryout for these parts,in how many different ways can the director choose people for the roles

Math
I'm having trouble with this question At the movies, it costs $5.00 to rent each movie. If you do not return the rentals on time, it costs you $3.00per movie rental per day. You recently rented movies from the business and returned them 2 days late. The total cost of the ...

cellular solids
Calculate the Young's modulus and compressive strength for: a) 5% dense aluminum regular hexagonal honeycomb, loaded in the out-of-plane direction, x3 b) 5% dense aluminum regular hexagonal honeycomb, loaded in the in-plane direction, x2 c) 5% dense aluminum open-cell foam...

geometry
write an indirect proof to prove that if there is a line and a point not on a line, then exactly one plane contains them

geomatry
Prove algebraically that the ratio of perimeters of two triangles is 1:4 if the ratio of their corresponding sides is 1:4

algebra
seven more than the height

Math
1 1/24

Business communication
Reserving this property requires a $500 security deposit , which will be refunded unless there is damage to the property or evidence that there is damage to the property or evidence that there has been smoking in the cottage or a pet on the premises or if the reservation is ...

Business communication
The requirements to rent the property is $500 security deposit,unless(1)There's damage to the property ,(2) Evidence of smoking in the cottage,(3)Pet on the premises(4)If reservation is canceled within the month of the rental period.

Business communication
Reserving this property requires a $500 security deposit , which will be refunded unless there is damage to the property or evidence that there is damage to the property or evidence that there has been smoking in the cottage or a pet on the premises or if the reservation is ...

Microbes and Society
A classmate who missed last week’s first lab on microscopy observes a lab partner in this week’s lab using oil immersion with the 100x objective lens. She asks her partner why he used it.” To increase the magnification of the microscope” was his answer. Do ...

Microbes and Society
A local newspaper once contained an article about “the famous bacterial genus ecoli.” How many errors can you find in this phrase? Rewrite the phrase with the mistakes corrected.

Microbes and Society
What specific aspects of the Stanford Prison Experiment made it ethically unacceptable. please help

Microbes and Society
Thank you

Microbes and Society
Every state has an official animal, flower, and/or tree, but one state has an official bacterial species named in its honor: Methanohalophilus oregonense. What is the state and decipher the meaning of the genus name? (Note: ense =” belonging to”). the state is Oregon...

math
In what time will $800 amount to $860 @ 3 3/4% simple interest? I=860-800

Math
For events A and B it is known that p(A)=p(B) , p(A{intersection} B)=0.1 and p(A{union}B)=0.7 find p(A')?

Math(simple interest)
A person borrows two equal sums of money at the time at 5% and 3.75% simple interest respectively & finds that if he repays the former sum a year before the latter the amount paid in each case is the same that is Rs.736. Find the total sum borrowed.

Math
Is the answer 12?

Probability
How many three digit number can be made with three 4's , four 2's and two 3's?

Anyone good with probability??
Mark, Carrie, Max, and Jane are doing a probability experiment in math class. They flip a coin 200 times and record their results. Heads:120 Tails:80 Question 2 on their lab sheet asks for the theoretical probability of flipping heads. They come up with four different answers...

Chemistry
Hello, I was wondering what would happen if u add KOH(potassium hydroxide) solution instead of KOH solid to HCL (hydrochloric acid). Currently, learning enthalpy in class and I'm not sure how this affects enthalpy

math(A.P)
the least vaue of 'n' for which the sum of the first n-odd natural numbers exceeds 5000 is?

math
lola is mowing lawns she mows 2/3 every 1/2 hour, how many lawns does she mow in 6 hours

chemistry
estimate the ph of an aqueous solution of each of the following compounds by indicating whether the ph is greater than 7 or less than 7 or about 7. H3PO4 Mg(OH)2 NaNO3 HNO3 NH3(aq) (NH4)2CO3 CO2 KC2H3O2 HC2H3O2 KCL

Math
Josh sold his bike for 10% less than he paid for it. IF he sold the bike for 585 how much did he pay for it?

political of the internet
Why do you think the imposed pro-democratic movement in Iraq was so unsuccessful, whereas the grassroots pro-democratic movement in Egypt was successful in structural change?

Algebra
Simplify the following expression Z-2z+4z+6

Math
0.05,0.5,5/8

poltics of internet
I need a good topic for hackers like anonymous any ideas

social psycology
okay Thank you I will go correct the errors

social psycology
If your norm is one that people outside a particular group would be unfamiliar with, you may have to go into some detail so that people outside the group can comprehend how what you did constituted breaking a norm does this sound good The way I broke my norm was that one day I...

Physics
11.2

Bows
How many pieces of 4 Inches of ribbon can get from a roll of 25 feet ribbon?

Algebra
To solve by elimination 4x-6y=10,x+y=0

Algebra
To solve by the elimination method. 5x+7y=40,x=y+3

Math
In the jazz band at Wyatt's school, there are 15 trumpets and 9 trombones. Find the ratio of trombones to trumpets?

Chem
What is the final volume of 35.0 L of carbon dioxide gas at 28.9°C if the gas is heated to 96.3°C? Assume the pressure and the amount of gas are held constant.

Math
Benjamin had to make payments of $1,500.00 and $2,600.00 in 12 months and 14 months, respectively, to a raw material supplier. What single payment in 3 months would settle both these payments? Assume a simple interest rate of 7.90% p.a. and use 3 months from now as the focal ...

Physics
A student walking home at a steady rate of 4.80 m/s suddenly decides to start running. She can accelerate at 7.50 m/s22, and runs for 1.70 s before stopping. What distance did the student cover while running?

Accounting
In its first month of operation, Kuhlman Company purchased 130 units of inventory for $6, then 230 units for $7, and finally 170 units for $8. At the end of the month, 200 units remained. Compute the amount of phantom profit that would result if the company used FIFO rather ...

Social psychology
confirmation Bias : How might people protect against the confirmation bias? need 1 strategy

math
Eliza borriws 25,000 and agrees to cancel her debt by paying equal sums at the.end of each month for 1 year. Find her monthly payment if interest is 6% compounded monthly.

Math
Where do I put parentheses to make this true: 12-8-2•2^4=35

trigonometry
Find an exact value for csc 11pi/12 How do I do this? I change it to 1/(sin 11pi/12) but then I'm stuck what to do.. Thanks

Math
Consider the equation log(b,a^2)=c a) What are all possible values of a? Explain. b) What are all possible values of c? Explain. c) If −1 ≤ a ≤ 1 and b > 1 what can you conclude about all possible value of c? Explain. Hi, I don't even understand what ...

math
Peter received a six month post dated check for Php 100,000.00.(The check can only be cashed after six months.) He offers it to his friend for Php 92,000.00. His friend's money is presently earning 10% compouunded monthly. If there is 20% withholdingtax on interest, which ...

Math
How many 2 digit numbers can you make using 1 and 2,if the digits can be repeated?

Art and creative development for young children
During periods of stress or change which traits can families model for their children to support creativity

Chemistry
100 g of water is added into 10.6 m NaOH solution. The diluted NaOH solution is then neutralized completely with H2SO4 solution. Density of NaOH is 1.08 g/ml. Calculate: i. the mol fraction of NaOH in the diluted NaOH solution. ii. mol of H2SO4 required.

finance
Dharma Supply has earnings before interest and taxes (EBIT) of $591,000, interest expenses of $255,000 and faces a corporate tax rate of 36 percent. a. What is Dharma Supply's Net Income? b. what would dharmas net income be if it didn't have any debt? c. what are the ...

N.H.H
Theresa has $26 in her wallet. The bills are worth either $5 or $1. If there are 14 bills total, how many does she have of each type?

working with children with disabilities
A teacher wants to know why Ben , a preschooler,wake up every morning at about 3.00 and refuses to go back to sleep .the teacher should.

Algebra 2
Thank you ^^

Algebra 2
So the problem is asking to find cos(α+β) The problem gives me sinα= 12/13, 0<α<π/2 cosβ= 21/29, 0<β<π/2 The answer is -135/377 I have no idea how to start solving to find that answer.

Algebra 2
Ohhh that makes a lot of sense, thank you!

Algebra 2
How does tan^4x-sec^4x equal -2tan^2x-1 If someone could please explain to me then that would be awesome. Thank you ^^

Chemistry
For the following chemical reaction HCN(aq)+KOH(aq)--->H2O(l)+KCN(aq) Write the net ionic equation, including the phases.

FIN3373
ST. Luke's Convalescent Center has $200,000 in surplus funds that it wishes to invest in marketable securities. If transaction costs to buy and sell the securities are $2,200 and the securities will be held for three months, what required annual yield must be earned before...

Math
Write the exponential function y=6(1.21)t in the form y=aekt. (a) Once you have rewritten the formula, give k accurate to at least four decimal places. k= help (numbers) If t is measured in years, indicate whether the exponential function is growing or decaying and find the ...

math
A baker buys some eggs at 18k each. He finds out that 8 of them are broken,he sells the rest at 24k each and makes a profit of #2.88. How many eggs did he buy?

chemistry
At 1500 °C, Kc = 5.67 for the reaction CH4(g) + H2O(g) CO(g) + 3H2(g) Calculated value of ΔG°1773 for the reaction at this temperature.

math
How do you verify tanxcosx/sqrt1-cos^2x = 1?

Social Studies
Okay.

Social Studies
Are those correct? My changed answers for 1, 3, and 4?

Social Studies
My changed answers... 1) B 3) A 4) B

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