Posts by Joe
Total # Posts: 2,757

Riddle
I am trapped in a room no doors or windows. The only 2 items in the room are a mirror and table. How do I escape ?? 
Riddle
Help. Solve You are in a room with no windows, doors or any exit. Your only 2 items in the room are a mirror and table. How do you escape ?? 
Vector
This question was given to the class for a test and I have no idea how to do it. We were given a similar question imgur(dot)com/a/1P9wGFK 
Vector
Determine the value of a+b if 3a = 24 cm, 2b = 10 cm and 3a2b = 20 
Math
Please no.further a little 
Math
The fifth term of an exponential sequence is greater than the fourth term by 27/2 and the fourth term is greater than the third term by 9. Find the first term and the common ratio 
physics
The objects listed below are placed at the top of a ramp, and roll down to the bottom without slipping. Assuming that there is no air resistance, rank them in order from fastest average rolling speed to slowest. Penny, large marble, basketball, and hula hoop 
Physics
I cannot find the answer anywhere on the reading or notes. Which of the following is a primary function of an adaptor that you plug into an ordinary electrical socket? It converts AC input to DC output. It converts AC input to AC output of a different frequency. It converts DC... 
algebra
??? 
algebra
Find an equation for a line that has a slope of 13 and contains (7, 2) Answer choices 1. y = 13x  89 2. y = 13x + 93 3. y = 13x + 19 4. y = 13x  33 
Math
What is the probability if two dice are thrown of rolling a 5 with one and a 6 with the other? 
math
Ms Johnson gives one eighth of a pizza to each of her 24 students. Write a multiplication expression and a pictorial representation 
math
im alrealdy triying by asking for help 
math
hey aleast im trying not like those who dropout 
math
i sorry but i need help im a undergrad student so i fail most of the time and im fall back so yeah need answeres 
math
i want a answer this is a answer to question website (A2A) 
math
Micah has a new remotely controlled car that has a circular range with a radius of 30 feet. What is the area of the circular range? 
Algebra
A chemist made 50 ounces of an acidic solution by mixing two different concentrations of the solution. He mixed x ounces of acidic solution with an 80% concentration and an acidic solution with 90% concentration. Which equation can be used to determine the concentration of the... 
Math [Algebra]
Thanks! 
Math [Algebra]
Josh simplified 4x  8x ÷ 2 and said the answer was 2x. What was Josh's error? What should his answer should've been? 
Chemistry
What is the second electron affinity of Se? I believe the first is... Se > Se + e The second.... Se > Se+ + e 
Alg 1
The mean score on Mr. Pascal’s first semester exam for his 28 students is 73 points. If he removes the lowest score of 19 points, what is the adjusted class average ? (arithmetic mean) 
math
Thanks dude I got it :) 
math
2432? 
math
The population of Circletown has been growing at an annual rate of 5% for the last 5 years. The population is now 3104 people. What was the population of Circletown 5 years ago? 
Algebra I
19 is correct Thanks Ms. Sue 
Algebra I
whoops i meant 184 
Algebra I
18.4 
Algebra I
The vertical drop of a roller coaster is the largest difference in height between any high point and the next low point. The vertical drops of five roller coasters at Mandelbrot Amusement Park are shown in the table. The Parabola  165 feet The G Force  119 feet The Mean ... 
Algebra I
132 and 755 is not the answer can you walk me through 
Algebra I
The vertical drop of a roller coaster is the largest difference in height between any high point and the next low point. The vertical drops of five roller coasters at Mandelbrot Amusement Park are shown in the table. The Parabola  165 feet The G Force  119 feet The Mean ... 
Math
If Teresa's daughter is my daughter's mother then what am I to Teresa. A grandmother B.great grandmother C. Mother D.daughter E. I'm Teresa 
Science
Using the ideal gas equation, determine the number of moles present in a gas if it has a pressure of 2.35 atm, a volume of 1.49 L and a temperature of 40.2 oC. Enter your answer in standard notation. 
Algebra
246.84 is wrong 
Algebra
While going for my daily run, I passed a squirrel carrying a nut in her mouth. When she saw me, she ran towards a safe place and, coming to a stone wall, easily jumped up on it and disappeared. I began to wonder how high I could jump if I were a squirrel. If an average ... 
Math
wait so the x value is ____ 
math
The weights of ice cream cartons produced by a manufacturer are normally distributed with a mean weight of 10 ounces and a standard deviation of 0.5 ounce.(a) What is the probability that a randomly selected carton has a weight greater than 10.21 ounces?(b) You randomly ... 
French
Is “bonjour mon baguettes” culturally insensitive 
Chemistry
The heat evolved in the reaction of hydrobromic acid with potassium hydroxide was determined using a coffee coup calorimeter. The equation for the reaction is: HBr(aq) + KOH(aq) > KBr(aq) + H2O(l) When 25.0 mL of 1.00 M HBr at a temperature of 24.5oC was ... 
Chemistry
This is Joe again the answer should be 13.8kcal/mol but i don't know how to this get this answer. 
Chemistry
The heat evolved in the reaction of hydrobromic acid with potassium hydroxide was determined using a coffee coup calorimeter. The equation for the reaction is: HBr(aq) + KOH(aq) > KBr(aq) + H2O(l) When 25.0 mL of 1.00 M HBr at a temperature of 24.5oC was ... 
Pre algebra
Expression in simplest form that represents the perimeter of a polygon that is 8cm 9x 8cm 9x 
Social studies
What are major differences between ancient Aksum and modern day Ethiopia???? Need help fast!!!!!! 
Precalc
Find a possible formula for the trigonometric function whose values are in the following table (note the values in the table may be slightly rounded): x 0.00 0.17 0.33 0.50 0.67 0.83 1.00 1.17 1.33 1.50 1.67 1.83 2.00 g(x) 4.00 5.50 6.60 7.00 6.60 5.50 4.00 2.50 1.40 1.00 1.... 
Precalc
point) The pressure P (in pounds per square foot), in a pipe varies over time. Four times an hour, the pressure oscillates from a low of 40 to a high of 300 and then back to a low of 40. The pressure at time t = 0 is 40. Let the function P = f(t) denote the pressure in pipe at... 
Science, Please help, due very soon!!!
Describe how you would prepare the following two solutions. Be sure to include the type of glassware which you would use and as much detail as necessary for someone to actually prepare the solution using good laboratory technique. • 250 mLs of a 5% NaCl (w/v) from solid ... 
Chemistry
This is due very soon, please help!!! Describe how you would prepare the following two solutions. Be sure to include the type of glassware which you would use and as much detail as necessary for someone to actually prepare the solution using good laboratory technique. • ... 
Chemistry
Describe how you would prepare the following two solutions. Be sure to include the type of glassware which you would use and as much detail as necessary for someone to actually prepare the solution using good laboratory technique. • 250 mLs of a 5% NaCl (w/v) from solid ... 
Math
THX 
Math
A sales representative for Data Electronics earns a salary of 1314 dollars per month plus a commission based on the total value of her sales. If she earned 1484.40 dollars for the month and her sales totaled 5680 dollars, what is her rate of commission? 
Chemistry
I dont understand this. please explain the relationship between wavelength, frequency and energy of light waves and the difference between the types of electromagnetic radiation. 
Chemistry
An electron in a hydrogen atom absorbs 15.5 x 1020 J of energy. If the electron originated at energy level 3, to what level was it excited? 
science
What is the energy of light (in J) emitted by a hydrogen atom when an electron relaxes from the 7 energy level to the 5 energy level? 
Chemistry
What is the energy of light (in J) emitted by a hydrogen atom when an electron relaxes from the 7 energy level to the 5 energy level? 
Chemistry
According to the idea of wave particle duality, which of the following items has a wavelength? Choose all that apply. An electron moving at 2.80 m/s. A planet moving at 180,000 km/hr. A gas molecule moving at 515 m/s A person running at 10 mi/hr. i think its A and D is it ... 
Chemistry
Why wasn't information about the mass of isotopes sufficient for identifying the isotopes? Provide an example to explain the answer. Figure 2 shows 2.5 min averaged spectra of ambient aerosol at nominal m/z 208 obtained with the HRAMS located at T0. Panel A compares V ... 
Business
What type of business can be designated as profit or nonprofit? a)Corporation b)Company c)Sole proprietorship d)LLC 
Algebra
This is a two part question, make sure you answer both parts: In the following subtraction problem the letters A, B and C stand for three different digits ( There are not any other operations involved in this problem). What digits should replace each letter? ABA  CA = AB What... 
Pre Calc
1)A particular pain relieving medicine has a decay rate of 10 % per hour. A patient was given a dose of the medicine 7 hours ago and there is currently 68 milligrams of the medicine in the patients bloodstream. 2)How long will the patient need to wait for there to be less than... 
Social studies
This is ur site Ms. Sue? 
math
I also got 125,000 
Maths
Thx 
Maths
The heights of four of the starting players on the basketball team are 183 cm, 178 cm, 174 cm, and 185 cm. If the mean height of all five starting player is 182 cm, what is the height of the fifth starting player? Plz explain 
Math
Thank You Scott 
Math
You have five identical pieces of equipment. There is a 1 in 10 chance that each piece will fail in a year. What is the likelihood that ALL pieces fail in the same year? 
Algebra
Trina has 36 marbles in three different colors. There are twice as many red ones as blue ones. There is one more green marble than there are red marbles. How many red marbles are there? How many green marbles are there? 
Math
1) The numbers 2 and 3 are prime numbers. They are also consecutive numbers. Are there other pairs of primes that are consecutive numbers? Why or why not? 2) which group of numbers, evens or odds, includes more prime numbers? Why? 
Math
a) Find all of the numbers between 1 and 1,000 that have 2 as their only prime factor. b) What is the next number after 1,000 that had 2 as its only prime fractor? 
phisical science
On a winter day the temperature drops from –15°C to –25°C overnight. If a pan sitting outside contains 0.20 kg of ice, how much heat is removed from the ice for this temperature change? 
anthropology
I'm glad my question helped you to find answers too Karen! Thanks bobpursley! 
anthropology
I have to write a paper about the role anthropologists play in migration with 3 examples. They just study migration, right? so would I just pick 3 examples of different people that have migrated? 
Algerbra
Six friends split the cost of a party. each person also spends $65 for a hotel room. each person $160 on the party and a room. What is the cost of the phone? 
Precalculus
What is the radian measure of arctan 1/2 + arctan 1/3? 
Physics
Matt is attempting to sail a sailboat northeast across the river with a velocity of 13 m/s relative to the current of water. The water current is flowing from south to north at a velocity of 6 m/s. If the angle between the velocity of the sailboat and the water current is 40 ... 
math
500 
PAP ALG
333197 
Ed Tech plz helppppp
1.A 2.B 3. D 100% 
Ed Tech plz helppppp
kelly is right 
Math
its D C C A 
Algebra
y varies jointly as X and Z. y=64 when x=4 and z=8. Find y when x=8 and z=6 
Math
9a to the 4th power squared 
Help me again in stats
Find the corresponding zscore to the given value and determine whether the value is unusual. A weight of 225 pounds among a population having a mean weight of 161 pounds and a standard deviation of 23.0 pounds. 
Stats in need of help
Assume that you entered a drawing to win one of 35 movie tickets. If only 650 people enter the drawing, determine the probability of winning (round your answer to three decimal places) 
English
My mother feels (bad, badly) about what happened. I think that it is bad. 
math
Macy's Department Stores markup men's cologne 63% on cost for an 8ounce bottle. A bottle of cologne costs Macy's $23.00. What is the selling price for the 8ounce bottle? $31.51 
Data
Of 20 people invited to a pool party, 4 prefer vanilla ice cream, 7 prefer chocolate, and 3 prefer strawberry. The host surveys six of these people at random to determine how much ice cream to buy. a) What is the probability that at least 3 of the people surveyed prefer ... 
Math
Suppose that the weather forecast calls for a 30% chance of rain on each of the three days of a long weekend. What are the odds in favour of no rain throughout the entire long weekend? Claudia and Ally are the two favourites to win an upcoming golf tournament. If Claudia is ... 
Chemistry
How did you calculate the energy for a. what formulas did you use 
Math
Calculate the probability that 200 rolls of two dice rolls will include a) more than 30 sums of 5 b) between 30 and 40, inclusive, sums of 5 
Math
A designer enlarged both the length and the width of a rectangular carpet by 50 percent. The new carpet was too large so the designer was asked to reduce its length and its width by 20 percent. By what percent was the area of the final carpet design greater than the area of ... 
Math
The list below gives the number of patrons per day over a 30day period during July at a theatre. 127 126 125 132 128 122 156 172 183 171 160 140 154 160 122 187 185 158 112 145 168 187 117 120 171 171 156 163 168 162 a) Find the mean and standard deviation of these data. b) ... 
Math
How do I convert improper fractions into decimals? 
Maths
Given that the line y=mx+c is a tangent to the circle (xa)^2+(yb)^2 = r^2 show that: (1m^2)r^2=(cb+ma)^2 
Maths
show that the circles x^2 + y^2  10x  8y + 18 = 0 and x^2 + y^2  8y  4y + 14x = 0 do not intersect 
History
Which of these values was central to the Transcendentalist writers 
social study
Ea he posted that like a year ago 
Spanish 1 b
please check my answers 2. How do you say one must in Spanish A. Hay que * B. A menudo C. Que más D. Es necesario 5. A person of mixed European and indigenous heritage is commonly to as a____ A. Mixtec B. Mestizo* C. Maya D. Nahuatl 6. Which is not a place in the ... 
math
a bus driver filled up 7/8 of her fuel tank for a trip. she used 6/7 of the fuel by the end of the trip. the capacity of her tank is 70 gallons. how much fuel did she sue for the trip. express answer a decimal 
Maths
Please help Trigonometric identities proof (cot^2(x)(sec(x)1))/1+sin(x)=(sec^2(1sin(x))/1+sec(x) Many Thanks 
Maths
Please solve this trigonometric identity proof problem. I have completed 20; this is the hardest one. Many thanks (sin^3(x)cos^3(x))/sin(x)cos(x)=1+sin(x)cos(x)