Tuesday
June 28, 2016

Posts by erika

Total # Posts: 399

math help please
The distance a spring stretches varies directly with the force applied to it. If a 7-pound weight stretches a spring a distance of 24.5 inches, how far will the spring stretch if a 12-pound weight is applied?
January 12, 2016

math help please
A jewelry store uses a markup rate of 70% on all items. If the wholesale price of a pair of earrings is $15.00, what is the retail price for the earrings?
January 12, 2016

math help please
Morgan had a bag of jolly ranchers. She counted 8 watermelon flavored candies in the bag of 46. If she bought a super-size bag with 138 jolly ranchers, how many could Morgan expect to be watermelon flavored?
January 12, 2016

math help please
Chumley from the TV show "Pawn Stars" bought some vintage watches for $15 each. He sold five of the watches for $36 each. What was the total amount of profit made for the watches sold?
January 12, 2016

math help please
On the blueprint of a portable stage is 1 cm = 10 m. The length of the stage on the blueprint is 2 cm and the width is 1/2 cm. What is the perimeter of the actual portable stage?
January 12, 2016

math help please
The graph gives a breakdown of the hours students use the tutoring center. If the graph is based on 300 students, how many used the center 8 to 10 hours during the week? 1-3 h 27% 3-5 h 22% 5-8 h 26% 8-10 h 15% over 10 h 10%
January 12, 2016

math help please
Miranda baked 48 muffins to sell at the school bake sale. She sold 2/3 of the muffins and gave the rest to her friends to eat. How many muffins did she sell?
January 12, 2016

math help
Claire earns a 15% commission from her lipstick sales. Her sales for the month of April were $400. How much commission did Claire earn for her April sales?
January 12, 2016

math help
On the blueprint of a portable stage is 1 cm = 10 m. The length of the stage on the blueprint is 2 cm and the width is 1/2 cm. What is the perimeter of the actual portable stage?
January 12, 2016

math help
The temperature at 1:00 pm on Tuesday was -13C. There was an increase of -6 per hour starting at 1:00 pm. Which of the following best represents the Celsius temperature n hours after 1:00 pm on Tuesday?
January 12, 2016

math help
Tia's parents gave her $20 to spend at the Spring Carnival. She spent $5 on a funnel cake and the remaining money on tickets for rides. If each ride ticket costs $0.75, how many ride tickets did she purchase?
January 12, 2016

math help
Jimmy spends ¾ of an hour getting ready for school. It takes 30 minutes to travel to school. If he needs to be at school at 9:00 am, what time should he get up?
January 12, 2016

math help
Hank rode his motorcycle half the distance from Lumberton to Wilmington, which are 70 miles apart. How many miles did he ride?
January 12, 2016

math
It is 3 miles around Westwood Park exercise trail. After skating around the trail 5½ times, Mr. Zorn lost a wheel. How many miles had he skated? Round your answer to the nearest mile.
January 12, 2016

math
Donald bought 10 woodcarvings for a total of $220. If they were all the same price, how much did he pay for each wood carving?
January 12, 2016

math 1
An advertiser needs a 4-inch picture of a 14 foot automobile. What is the scale factor? Write your answer in simplest form using a colon.
January 11, 2016

math 1
Sarah calculated the points she earned on her test. Sarah thought she earned 95 points but the teacher told her she actually only scored 85 points. What was Sarah's percent error. Round to the nearest tenth.
January 11, 2016

math
target is advertising a Sony camcorder for $299.99 this week. If the regular price is $329.99, what is the percent of discount customers are receiving for this item? Round your answer to the nearest whole number.
January 11, 2016

math
3.6 is 12% of what number?
January 11, 2016

math
A jewelry store purchases earrings from a manufacturer for $5.00 each. If the store wants to mark up the price by 75%, what will be the retail price of the earrings?
January 11, 2016

chemistry
How many formula units are in 1.31 mg of hydrogen peroxide (H2O2)? Answer in units of formula units. For 508 g of butadiene (C4H6) calculate the number of moles. Answer in units of mol. Calculate the number of molecules. Answer in units of molec. 016 1.0
January 10, 2016

chemistry
How many molecules are in 24.0 g NO2? Answer in units of molec.
January 10, 2016

chemistry
How many molecules are in 0.0700 mol NH3? Answer in units of molec.
January 10, 2016

chemistry
How many molecules are contained in 1.30 mol O2? Answer in units of molec.
January 10, 2016

chemistry
How many grams do 6.2×1024 atoms of argon weigh? Answer in units of g.
January 10, 2016

Math And Science for Young Children
No, A
January 9, 2016

Chemistry
A pot containing 500 g of water at 100 degrees Celsius would require how much energy to boil off completely
December 7, 2015

math 7th
a candle was 45 cm long .It was lit and 20% burned off .The candle went out.The next day it was lit again ,and 25% of the remaining candle burned out .then it went out On the third day the candle was lit 1/3 of the remaining amount burned off .then it went out .how long was ...
December 1, 2015

math 7th
the cost (c) is twice of the cost of a 7$ tape what is the price of the cd
December 1, 2015

math
Juan sold a boat that he bought 5 years ago. He sold it for 70%less than he originally paid for it. If the original cost is b , write an expression that shows how much he sold the boat for
November 18, 2015

math
Ms.Sue i need your help please
November 18, 2015

math
pine city (x) is less than or equal to 20 miles from sun vally depending on the route you take how many miles is pine city from sun vally
November 18, 2015

math
Ms .sue i think s is for march sales
November 18, 2015

math
this month`s sales of $85,000 are greater than 1/2 of the sales of march repesented by the letter . What was March`s sales .
November 18, 2015

Chemistry
How do you find the Ka1 and Ka2 of oxalic acid when it is in a solution that is 1.05 M H2C2O4 and has a pH of 0.67. [C2O4^2-] = 5.3x10^-5 M. I have tried using an ICE table for both reactions, as oxalic acid is a diprotic acid, but I am having trouble knowing where to put ...
November 1, 2015

Physics
A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 17.0 m/s when the hand is 1.50 m above the ground. How long is the ball in the air before it hits the ground? (The student moves her hand out of the way.)
September 17, 2015

Algebra
I'm trying to find the sum of this geometric series but I can't find a common ratio. How do I find it? 1+1/5+1/25+...
September 8, 2015

Algebra
I'm trying to find the sum of this geometric series but I can't find a common ratio. How do I find it? 1+1/5+1/25+...
September 8, 2015

Algebra
I've been try to solve this equation and I can't seem to get far. Do you add 3 to both sides? If not please explain to me how you solve this. Thanks :) 1/2=2/5c-3
September 1, 2015

organic chemistry
isobutyl tert pentyl acetylene has how many hyrogen atoms? iso=2 butyl=4 tert=4 pentyl=5 acetylene=2 28 h atoms? can you please teach me how to compute hydrogen atoms.. Neoheptane has how many atoms?
July 11, 2015

organic chemistry
evaluate the number of carbon for the ffg. pairs by writing G if greater, L if less than or E if equal 1. butene E sym dimethylethylene sol'n: butene has 4 carbons and sym dimethylethylene also has 4 carbons so it's equal. Am i right? 2. methylbutane L isopentane ...
July 11, 2015

algebra
morgan saw 10 blue cars 8 red cars and 42 white cars drive by her house in 1 hour what is the experimental probability that the next car will not be white
March 12, 2015

math
maria throws a ball straight up with an initial velocity of 10m/s what is its velocity at the highest point?
March 10, 2015

Math
Pick any single digit number. Multipy it by 12,345,679. Then multiply the result by 9. What happens? Explain why this works.
March 1, 2015

Math
John and Miles each had some money. First Miles gave John a quarter. Then John gave Miles one-third of his money. Then Miles gave John one-third of his money. At the end, John had $2.50 and Miles had $2.00. How much did they each start with?
February 26, 2015

Math
After dinner, three friends at a restaurant paid their bill and noticed a bowl of mints on the front counter. Sean took one-third of the mints but returned four because he had a momentary pang of guilt. Fred then took one-fourth of what was left but returned three for similar ...
February 22, 2015

Math
Three boxes each contain a number of billiard balls. One box contains only even-numbered balls, one box contains only odd numbered billiard balls, and the third box contains a mixture of odd and even numbered balls. All the boxes are mislabeled. By selecting one ball from only...
February 17, 2015

Math
A 6 story building has stairs between equally spaced doors. How many times higher is the climb from the first to the sixth floor than the climb from the first to the third floor?
February 16, 2015

math
Suppose in a town three-fourths of the men are married to one-half of the women. What is the ratio of men to women in this town?
February 12, 2015

Math
How did you get y=1.56x?
February 12, 2015

Math
Suppose in the early 1900s the levels of CO2 in the atmosphere was only 64% of the levels of CO2 today. What percentage more is the level of CO2 today compared to the levels of CO2 in the early 1900s?
February 12, 2015

Math
A mixture is 20% red paint, 35% yellow paint, and 45% water. If 5 quarts of red paint are added to 20 quarts of the mixture, what is the percentage of red paint in the new mixture?
February 10, 2015

Math
Well, I subtracted 1000-800= 200 miles, which was my remaining miles. She wants to finish at an average of 1000 mph so that she would have flown at an average of 1000mph, so speed is 1000mph. I plugged in this values in the formula: average speed=distance/time... 1000=200/time...
February 10, 2015

Math
A jet pilot is making a 1000 mile trip in her military Tomcat. She flies 800 mph for one hour and decides she wants to finish the trip so that she would have flown at an average of 1000 mph. How fast should she go to finish the trip and meet her goal?(Hint: Think carefully ...
February 10, 2015

Math
But, what shapes are those measurements?
February 10, 2015

Math
If a field has perimeter P, what shape maximizes the area? Justify your reasoning.
February 10, 2015

Math
Explain why the product of any two consecutive natural numbers is even. Prove your conjecture.
February 10, 2015

Math
Find all pairs of integers such that when they are added they equal 100, and when they are multiplied they are at least 2000.
February 10, 2015

Math
Pick what age you would like to be (may be your actual age if you like). Add 10. Multiply the result by 4. Add 200. Divide by 4. Subtract your original number. The final result is 60. Explain how I knew that.
February 10, 2015

Math
What is 100^2-99^2+98^2-97^2+96^2-95^2 +...+ 4^2-3^2+2^2-1^2 ? (Find an expression where n is the largest number being squared, then use it to calculate the sum when n = 100. Hint: Examine specific cases where n is small. Then generalize).
February 9, 2015

Math
In a group of 9 coins, one is fake and weighs slightly less. What is the fewest number of times you need to use a pan balance to find the counterfeit coins? (A pan balance is a scale used to measure weights, where weights are placed in two pans. The heaviest pan will go down ...
February 3, 2015

Math
Find the remainder when 3^997 is divided by 5. n=1 3n/5=3/5 n=2 3^2=9/25 n=3 3^3=27/5 n=4 3^4=81/5 n=5 3^5=243/5 r=3,4,2,1,3,4,2,1 n=997
February 3, 2015

Math
Randy had a sheep that started eating more and more as each day passed. on the first day, Tandy's sheep ate 5 carrots. On the second day, Randy's sheep ate 11 carrots. On the third day, the sheep ate 18 carrots. And on the fourth day, the gluttonous sheep ate 26 ...
February 3, 2015

statics
A1 Helicopter in flight with unbalanced stores A helicopter in forward flight is shown in Figure 1. The helicopter in forward flight experiences a horizontal drag force DF  . The drag force DF  is assumed to pass through O. The helicopter is held up in the air ...
February 2, 2015

Physics
You swing a 2.40kg stone in a circle, using the full length of a thin 60.0cm rope.
November 1, 2014

Physics
Your new designer chair has an S-shaped tubular metal frame that behaves just like a spring with the spring constant 13500 N/m. When your friend, who weighs 910 N, sits on the chair, how far does it bend?
September 26, 2014

math
never mind, i figured it out! :) g= 50
September 7, 2014

math
Given that: 4(2g + 104) - 96 = 504 + 6(g - 14), solve for g. i'm confused on how to set this problem up - if anyone could help that would be great. thank you.
September 7, 2014

Biology 30
In what size populations might you expect it to be relatively common for alleles to become fixed? Why? I think that larger populations would be more likely to have fixed alleles, since perfect Hardy-Weinberg equilibrium states that there will be no change in allele frequency ...
May 23, 2014

HELP!
Next year (sophomore year) I'm taking the following courses: Honors Algebra II/Trig Spanish III Health AP Biology Honors English AP World History Is AP Bio and world history hard? or no it's not just the exam. Please tell me because this is my first year taking AP.
April 14, 2014

statistics
a. with replacement? b. without replacement?
April 7, 2014

statistics
if 2 out of 100 second graders are randomly selected, find the probability that they are both boys and like spring. boys/spring 39
April 7, 2014

math
a storage room measures 11.35 feet in length by 9.5 feet in width by 8.3 feet in height. it contains a box which is 4.25 feet in length 6.5 feet in width and 4.0 feet in height.how many cubic feet of storage space are left in the room rounded to the nearest cubic foot
April 7, 2014

Chemistry
How would you start and finish these questions by a step by step process? Does Amp equal to Joules? 1. How many grams of aluminum can be produced by the electrolysis of aqueous aluminum chloride by a current of 5.00 amps for 5.00 hours? 2. Consider the following ...
April 6, 2014

math
Jorge sees that there are small and large squares in the tile design belo.how many squares are there in all in the design?
March 20, 2014

science
- Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
February 27, 2014

Geology
Pleistocene mammoth bone from La Brea Tar Pits of Los Angeles, California. Age: 12,200 ± 35 years
December 10, 2013

Biology 20
I'm using chromatography to identify compounds in a leaf extract for a lab, and one of the evaluation questions is 'Suggest a step that could be added to the procedure to isolate a specific compound for chemical testing.' What step could I use?
October 30, 2013

college chem
a compound containing
October 7, 2013

math
1;2; 3; 4
September 23, 2013

math
Jon makes a bar graph that shows the number of dogs owned by members of his class. if the smallest number is 1 and the largest number is 4; what interval should Jon use?
September 23, 2013

science
a child is pushing a shopping cart at a speed of 1.5 m/s. how long will it take this child to push the cart down the aisle with a lenght of 9.3m?
September 8, 2013

French
But now the problem is that another word doesn't fit in...g_ _ _ e In the sentence Avant de partir en voyage, on consulte toujours un g_ _ _ e touristique?
September 4, 2013

French
Thank you so much! I completely overlooked that vocabulary word in my textbook!
September 4, 2013

French
I'm doing a French crossword puzzle, and I'm stuck on one of the words. It's a four letter word like: _a_d And it fits in the sentence: Le train part de la____ de Lyon. Could someone help me out? Thanks!
September 4, 2013

French
How do you translate: "May I ask some questions?" into French with correct grammar?
June 8, 2013

French
Oh, it makes sense now! Thank you very much!
May 25, 2013

French
Oh, I translated wrong, my apologies. So then, how would I answer this? I'm unsure of what it is asking.
May 25, 2013

French
What is the translation of "Comment s'appelle ce terrain de camping"? I know that the literal translation is, "How do you call camping"? but that makes no sense to me.
May 25, 2013

French
Thank you, Ms. Sue :)
May 25, 2013

French
What is the English translation of: Que veut dire VTT?
May 25, 2013

Indefinite Integrals
find the indefinite integral of (1/x)*(e^(-2log[ 3,x])) dx where 3 is base of the log i cannot even figure out where to start :( please help. thank you
May 24, 2013

Derivatives
Find f'(x): (abs(((x^2)*((3x+2) ^(1/3)))/((2x-3)^3)) So I thought I should split it into two parts: A and B. A) (x^2)/((2x-3)^2) B) ((3x+2)^(1/3))/(2x-3) My plan was to differentiate each part and then multiply them together, since multiplying their denominators together ...
May 24, 2013

Integrals- Log/Ln
I'm still getting it wrong, so I'm not sure what's with that.. Thank you for your help though!
May 24, 2013

Integrals- Log/Ln
Can you check this please i'm not sure why it's wrong .__. 1) indefinite integral of 1/t *ln(t) dt the t*ln(t) is altogether on the bottom i got ln(ln(x)) + C 2) find the indefinite integral of 1/(sqrt(t)*[1-2*sqrt(t)]dt sqrt(x) is on the bottom. i got -ln(1-2*sqrt(t...
May 24, 2013

French
Hello! Could someone please read this report on my trip to Paris, and correct it? Thank you! Mon voyage en France était très amusant! Nous allé à Paris. Nous regardé l’églises, monté Le Tour Eiffel, et prendre plus des ...
May 20, 2013

French
Ahh, thank you so much! it makes sense now! MErci!
May 20, 2013

French
Just a quick question... how do you do futur proche in French?
May 20, 2013

Math
It takes pipe A 14 days to fill the fish pond. It takes pipe B 18 days to fill the same pond. Find out how pond it takes both pipes working together to fill the pond
May 20, 2013

physics
A group of hikers hears an echo 2.50 s after shouting. If the temperature is 20.0°C, how far away is the mountain that reflected the sound wave?
April 24, 2013

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