Saturday

February 13, 2016
Total # Posts: 155

**Chemistry**

How much energy in kJ is needed to heat 7.0L of water from35 degrees Fahrenheit to boiling point 100 degrees Celsius. If the density of water is 1.0g/cm^3 and the heat capacity of water is Cp= 4.184J/g degrees Celsius
*February 12, 2016*

**ALGEBRA**

Create 2 equations to the following: How many hamburger buns and hot dog buns can I buy for $20 if the hamburger buns cost $2 a package and hot dog buns cost $1.50 a package?
*February 9, 2016*

**Math**

Thank you!:)
*November 27, 2015*

**Math**

The air temperature decreases by about 1 degree Fahrenheit for each 300 feet of altitude. a) Find a function T(x) for the temperature at an altitude of x feet if the sea-level temperature is 45∘F. (b) Find T(1000). [Round to two decimals] I considered two sets of points...
*November 27, 2015*

**Math**

try to understand the answers here. jiskha dot com/display.cgi?id=1354313665 (remove the spaces, change dot into an actual dot ( . ))
*November 24, 2015*

**Math**

omygod i know the answer now... i solved hahaha. nevermind
*November 24, 2015*

**Math**

Substitute numbers for the letters to make the equation true. Same letter has the same number. Different letters have different numbers. x + x + y = 20 y + a - y = 9 y + x = 13
*November 24, 2015*

**Math**

Liwanag sold 37 tickets to Manila Zoo. Adult tickets cost Php 3.50 and child tickets cost Php 1.25. She collected 73.25 from the sales of the tickets. How many of each kind were sold?
*November 24, 2015*

**Math**

Six years ago, Jim was four times as old as Fe. In four years, he would be twice as old as Fe. How old are they now?
*November 24, 2015*

**Pre-Cal**

A penny is dropped from the top of Bank of America building. How long does it take to reach the group? Assume the back is 1024 ft high. My work so far: -16t^2+0t+1024 t=8 sec Is this correct? Thanks!
*September 14, 2015*

**numerical analysis**

find the smallest positive root of the equation f(x)=2sinx+x-2=0 using the false positive method.
*September 5, 2015*

**Physics**

Jill and Traci are side by side in their cars at a red light. When the light changes, Jill takes off with an acceleration of 2.4m/sec^2. Traci waits 3 seconds and then takes off with an acceleration of 4m/sec^2. How long will it take her to catch Jill? I've tried using the...
*September 2, 2015*

**Calculus **

A 6 feet tall man walks away from a streetlight that is 15 feet high at a rate of 5 ft/s. Express the length 's' of his shadow as a function of time. What I have so far: I set up a triangle and used similar triangles to create a ratio (6/s) = (s/d+s) s = (6d + 30/15s) ...
*August 31, 2015*

**math**

Saturday 6742/17 = 396.58 --> 396 people Sunday 5487/17 = 322.76 --> 322 people 396 + 322 = 718 people
*August 31, 2015*

**math**

A Thai restaurant offers the curry special: curry vegetables with your choice of beef, chicken tofu or shrimp. Choose yellow curry, green curry or red curry. Drink included: tea or soda. If a customer makes all choices randomly, what is the probability that she orders a yellow...
*May 5, 2015*

**english**

its c. their
*April 28, 2015*

**geography**

social, political, and economic changes made under the tokugawa shogunate
*March 1, 2015*

**geography**

how did cultural diffusion impact the development of japan
*February 28, 2015*

**geography**

describe the food people achievements inventions art and architecture of china under kublai khan
*February 28, 2015*

**geography**

why did the mongol dynasty collapse
*February 28, 2015*

**geography**

how geography affects the way of life in japan
*February 28, 2015*

**geography**

compare geography of japan and greece
*February 26, 2015*

**geography**

how did the mongols conquests promote cultural diffusion
*February 26, 2015*

**geography**

can any one tell me about the command system of mongols?
*February 26, 2015*

**english**

explain how johnny learns? how can he be helped? how can he help others? from the play;outsiders chapter 5
*February 25, 2015*

**english**

oh no
*February 25, 2015*

**english**

hi ms sue plzz answer the question
*February 25, 2015*

**english**

plzzz answer this question as soon as possible
*February 25, 2015*

**english**

this is the queston of the play of outsiders
*February 25, 2015*

**english**

chapter 5 the outsiders
*February 25, 2015*

**english**

what do the supplies tell you about johny
*February 25, 2015*

**algebra**

factor the polynomial 3x^2+3x-6
*February 25, 2015*

**algebra**

factor the polynomial 3h^2+11h+6
*February 25, 2015*

**english**

Where?
*January 21, 2015*

**english**

Behaviours of dracula
*January 21, 2015*

**english**

ok thank you soo much!! i got the answers i needed
*January 21, 2015*

**english**

Please can you help me
*January 21, 2015*

**english**

yes it is. i already wrote that for characteristics but i need help about his behaviour
*January 21, 2015*

**english**

What are some behaviours of Dracula? i have two so far: appears during the night leaves two punctures on his victims neck
*January 21, 2015*

**english**

well after she turns into a vampire her friends and husband had to strike a stake through her heart, in which she dies and stops being a vampire
*January 21, 2015*

**english**

But with dracula, he attacks Lucy she turns into a vampire?? is that homicide?
*January 21, 2015*

**english**

if dracula is sucking the blood of his vistcms, would it be called homicide or what??
*January 21, 2015*

**english**

Ok. i am following the victimology for a criminal profile??
*January 21, 2015*

**english**

How should i start to write a victimology about dracula
*January 21, 2015*

**biology(really need help!)**

i know.. but i cant find anywhere online about its role and ecological issues
*December 25, 2014*

**biology(really need help!)**

What role does the lilac flower play in its natural ecosystem? What is its niche in the food web Are there any ecological issues surrounding the lilac flower(e.g. are its populations decreasing, is it spreading uncontrollably..)
*December 25, 2014*

**Physics**

i think the answer would be 3827.1
*November 15, 2014*

**Physics**

A 1.50 X 10^2g piece of brass(specific heat capacity 3.80 X 10^2 J(kgC) is submerged in 400 mL of water at 27.7 Degrees Celsius. What is the original temperature of the brass if the mixture has a temperature of 28.0 degrees Celsius
*November 15, 2014*

**chemistry **

Complete the following reactions, where applicable. If no reaction occurs write N.R A) blank + blank ---> Cu(NO3)2 + PbSO4 B) C6H12O6 + O2 --> blank + blank C) AgNO3 + CuCI2 ---> blank + blank
*November 1, 2014*

**Math**

Randolph runs a home appliance repair business and charges a service call fee of $85 plus $15 per half hour for his labour. Write an equation for calculating the total charges, C, in terms of hours of labour, H. Plot the graph of C vs. H and define the slope and C-intercept of...
*October 31, 2014*

**physics**

A child pulls a wagon by the handle along a flat sidewalk. She exerts a force of 80.0 N at an angle of 30.0 above the horizontal while she moves the wagon 12 m forward. The force of friction on the wagon is 34 N. Calculate the mechanical work done by the child on the wagon ...
*October 28, 2014*

**PLEASE HELP! SCIENCE**

The system of blocks shown in the diagram below is being accelerated to the right at 4.4 m/s2 What is the applied force Small box mass- 0.10 kg Big box mass - 0.20 kg Acceleration - 4.4 m/s2 Coefficient kinetic - 0.35
*October 26, 2014*

**Physics please help!**

A sprinter starts from rest and accelerates for 5s. He then travels at a constant velocity for 10s. Finally he slows down to a stop in 5s. Draw a d-t graph to represent his motion. Then draw the corresponding v-t and a-t graphs
*September 17, 2014*

**5th grade math**

What is the best estimate of for the product of 289 and 7?
*August 25, 2014*

**Organic biochemistry**

How to draw the skeleton structure for diethylammonium bromide?
*July 2, 2014*

**Probability**

Calculate the (modeled) probability P(E) using the given information, assuming that all outcomes are equally likely. n(S) =8, n(E) =4
*June 22, 2014*

**Frequency**

Calculate the relative frequency P(E) using the given information. 400 adults are polled and 320 of them support universal health care coverage. E is the event that an adult does not support universal health coverage. P(E)=?
*June 22, 2014*

**Probability**

Four coins are tossed. What is the probability of getting more tails than heads and getting at least two heads?
*June 22, 2014*

**Probability**

If the events A and B are disjoint, A Intersection B =0, P(B) = 0.17 and P(A U B)=0.55. Find P(A)
*June 22, 2014*

**Probability**

How many unordered sets are possible that contain four objects chosen from thirteen?
*June 22, 2014*

**Compute**

Compute the indicated quantity P(A probability B) = .1, P(B) = .5. Find P(A interception B).
*June 22, 2014*

**Probability**

How many ordered lists are possible that contain five objects chosen from seven?
*June 22, 2014*

**Probability**

Consider D ={red, blue, green} and F = {ball, car} find DXF
*June 22, 2014*

**Probability**

I P(B) = 0.4, find P(B')
*June 22, 2014*

**Probability**

Let A and B be two events with P(A interception B)= 0.2, P(B) =0.15, and P(A U B)= 0.75. Find P(A)
*June 22, 2014*

**Probability**

Four Coins are tossed. Describe the sample space S, probability of getting more tails than heads and probability of getting at least two heads.
*June 22, 2014*

**financial**

710.78 to the nearest cent: 710.79 either one will be correct.
*June 14, 2014*

**financial **

If I want my rent in 4yrs to be 900dllrs. The owner of the apartment building told me that the rent will increase 3% every year compounded every year. What should be my rent today?
*June 14, 2014*

**future value for simple interest**

2 years
*June 14, 2014*

**future value for simple interest**

a 5000 loan, taken now with a simple interest rate of 4% per year, will require a total repayment of 5400dllrs. After how many years t will the loan mature?
*June 14, 2014*

**financial**

40 annual interest rate
*June 14, 2014*

**financial**

an investment of 3000 will pay a total of 600dllrs simple interest after 5yrs. what is its annual interest rate?
*June 14, 2014*

**spanish**

number 1 is jugador is (Player)
*January 31, 2014*

**history help plzzzzzz**

katt * i like zack a lot* its 8th grade
*January 29, 2014*

**biology**

In a population with two alleles, B and b, and the allele frequency of b is 0.4. Calculate the allele frequency of heterozygotes if the population is in Hardy–Weinberg equilibrium? Show your work. Thanks for any help in advance!
*August 1, 2013*

**College Algebra HELP**

Use the seven step method described in the book to graph the following rational function f(x)=(2x^2+x-3)/(2x^2-7x) 1) Determine the symmetry of the function 2) Find the y-intercept 3) Find the x-intercept 4) Find the vertical asymptotes 5) Find the horizontal asymptotes 6) ...
*May 15, 2013*

**Seven step method**

Use the seven step method described in the book to graph the following rational function f(x)=(2x^2+x-3)/(2x^2-7x) 1) Determine the symmetry of the function 2) Find the y-intercept 3) Find the x-intercept 4) Find the vertical asymptotes 5) Find the horizontal asymptotes 6) ...
*May 15, 2013*

**College Algebra! help!**

Consider the following functions f(x)= (7x+8)/(x+3) and g(x)= (3x-8)/(7-x) (a) Find g(g(x)) (b) Find g(f(x)) (c) Determine whether the functions f and g are inverses of each other.
*May 14, 2013*

**physics**

A wagon is being pushed by a small child along a sidewalk. If the wagon has a mass of 8kg, a coefficient of friction of 0.3 and is accelerating at 0.2m/s what force is the child applying
*April 15, 2013*

**math**

helow answer. show work how to figure out the below (1.2)square root + (2.8) sq. root = 3.1
*April 11, 2013*

**Calculus**

An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be moving to the ...
*April 11, 2013*

**Big MATH Help needed**

An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be moving to the ...
*April 8, 2013*

**Earth science**

oxygen
*April 2, 2013*

**Math**

There are 24 hours in each day.there are 7 days in one week how many hours are there in a week?
*February 24, 2013*

**Math**

What is a 2 digit number 19 is a factor and the sum of its digits is 12
*September 12, 2012*

**Math**

2 part question 1) a cone shaped paper cup has a height of 7 inches and a diameter of 5 inches. What is the volume of the cone? Round answer to the nearest hundredth. 2) if we collect rainwater in the cup in question 1 until the waters depth is 6 inches, what percentage of the...
*May 22, 2012*

**Math**

A company charges $42 per cubic yard of concrete. How much will it cost to pour a sidewalk that is 45 inches wide, 70 feet long, and 4 inches deep?
*May 22, 2012*

**English**

Ok thanks
*May 2, 2012*

**English**

What is the verb or the verb phrase in the sentence though?
*May 2, 2012*

**English**

What is the verb or verb phrase in the sentence: Her mother, Naomi, is a tax attorney with her own business.
*May 2, 2012*

**math**

Joe needed two boards measuring 1 foot 9 inches and 3 feet 5 inches to complete his project. He wanted to find a total of the amount of wood he would need to buy? How would I simplify this?
*February 22, 2012*

**Physics**

A skater of mass 60 kg takes a 20 m radius turn at 12 m/s. Find the skater's angle of lean (between body and vertical)
*January 6, 2012*

**Physics**

A man pushes a 50N box across a level floor at a constant speed of 2.0 m/s for 10 s. Whats the average power output by the man.
*December 8, 2011*

**physics**

A 15kg object is pushed to the right with a net force of 60N. If a 5kg object experiences the same acceleration, how much force is it being pushed with.
*December 8, 2011*

**math**

it depends on how many people are shaking thier hands
*December 5, 2011*

**physics**

a penny dropped from the Empire state building. how far does the penny drop in 6 seconds? how fast will it be moving after 10 seconds?
*October 6, 2011*

**physics**

A net force gives a 10th kg object an acceleration of 2.0m/s . If the same force were applied to a 20 kg object what would its acceleration be?
*July 14, 2011*

**english **

help i need to know if this sentence is parallel Neither the searing pain in my toe nor the blinding rain in my face will keep me from finishing the race.
*July 1, 2011*

**physics**

PE= 294 work done= 294 power= 29.4
*June 30, 2011*