Total # Posts: 536

Math
1.-80%(-2) (=,<,>) 120/3 2.-1750%70 (=,<,>) -1008/48 3.240/-80 (=,<,>) -150/50 4.675/-45 (=,<,>) 865/-51 5.-3755%x= -15 6.22=x%(-34) X=-748 7.x%(-17)=-35 8.-680 % x =53 X=-13

Principles of Biology 1
A line graph because the students will be able to see the difference between their measurements.

math
-84-(-55)=-139

no it doesnt

For whom do members of the JVC works? plz don't give me an answer to look at on wikapieda that website does not tell the truth thanks

For whom do members of the JVC work?

math
they have to take the 25 out there there is no 25 in the first number

math
they put in the 25 and there is know 25 in the first number

jvc what year was the organizaion founded?

english
Imperative Interrogative Declarative Exclamatory 1.what a ball game this 2.Wear your boots in the rain. imperative

Geometry
If

health
its B 80%

chemistry
If 3.20 kg of Sulphur reacts with oxygen, calculate the volume in millileters of sulphur dioxide gas formed at 30.5 degrees Celsius and 1.04 atm.

Physics
Volume of 1200 L of helium at 4000 Pa is heated from 45.0°C to 75.0°C increasing the pressure to 6000 Pa. What is the resulting volume of gas?

Physics
Given 435 in^3 of nitrogen at 1340psi (absolute) at 72.0°F. Find the volume at 1150psi at 45.0°F.

Physics
A welding tank has a gauge pressure of 2000psi at 40.0°F. What is the new gauge pressure if the temperature rises to 100°F?

Physics
Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.

Physics
Some propane occupies 150 cm^3 at 12.4°C. Find the temperature when its volume is 132ft^3 if the pressure remains constant.

Physics
Some hydrogen occupies 120 ft at 60.0°F. Find the temperature when its volume is 132ft^3 if the pressure remains constant.

Chemistry
1. Write a balanced equation : 2H^2O^2---O^2+ 2H^2O 2. Find the molar mass (g/mol) of each: 34.02 32.00 18.02 3. Divide grams water by the molar mass of water: .77g (1mol/18.02g) ~ .0427 mols 4. Use the mole ratios to find the number of hydrogen peroxide moles: 2H^2O^2---O^2+ ...

math
a jar contains 27 blue blocks 18 red blocks 12 orange blocks and 43 green blocks You put your hand in the jar and without looking pull out a block. About what fraction on the time would you expect to get a red block?

Physics
How many kcal of heat are required to vaporize 25.0kg of water at 100°C?

Physics
Find the increase in Volume of 50.0L of acetone when heated from 40.0°C to 75.5°C.

Physics
How many Btu of heat must be added to 900lbs of steel to raise its temperature from 20.0°F to 500°F? Specific heat of steel .115Btu/lb°F

Physics
A Brass rod 50.0 cm long expands 0.0734 cm when heated. Find the temperature change.

Physics
A 100 kg steam boiler is made of steel and contains 200 kg of water at 5.00°C. How much heat is required to raise the temperature of both the boiler and water to 100°C? The specific heat of Steel is 0.115kcal/kg°C. The specific heat of Water is 1.00kcal/kg°C

math
if you have a piece of string 11 ft. long and you cut it into 15 equal pieces how long will each piece be?

Physics
A ball is thrown horizontally from the top of a building 21.6 m high. The ball strikes the ground at a point 123 m from the base of the building. Find the x component of its velocity just before it strikes the ground. Find the y component of its velocity just before it strikes...

Math
Pamela and David walk on the same track. It takes Pamela 9 minutes and David 6 minutes to walk one lap. If they start walking at the same time, how many laps will each have walked when they cross the starting point together for the first time?

math
Well you would do 46.25/37. Which equals 1.25. So she payed \$1.25

math
If I have a 66% in algebra Android we took a exam that's worth 20% of our grade Android I got a 54% on the multiple choice what would my average grade be?

Career planning
I chose D- All of the above

Math
I'm so lost.

geometry
Which of the following statements is true?Select one of the options below as your answer:A. A 25o angle is congruent to a 25o angle. B. Two intersecting lines form two pairs of congruent angles. C. It is possible for congruent angles to add up to 90o. D. All of the above are ...

4. After the temperature reaches 33 degrees Celcius, the rate of photosynthesis declines. Using knowledge of enzymes, explain why this happens. 6. As the amound of CO2 increases, what would happen to the rate of photosynthesis? And as the amount of CO2 increases, would the ...

Algebra 2
Find the coordinates of the vertices of the parallelogram with sides that are contained in the lines with equations y=3, y=7, y=2x, y=2x-13

Math
2989/7*2

canyons,dunes,and deltas SCIENCE
Weathering

Physics
A bicycle is moving at a constant speed of 12m/s as it covers a distance of 200m. it then applies its brakes and stops over the next 350m. how much time doe sthis total motion take?

Math
?? huh

Math
6 ways

Geometry
how do you solve using midpoint equation if you only have one pair of points? like to use midpoint equation you usually get two points (4,3) and (5,2) but ive been given only one point (3,1). how do i solve for midpoint with only one set of points? help please

science
What keeps proteins within the bilayer?

chemistry 1
From data below, calculate the total heat (J) needed to convert 0.757 mol of gaseous ethanol (C2H6O) at 151°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. Boiling point at 1 atm 78.5°C cgas 1.43 J/g·°C cliquid 2.45 J/g·°C ΔH°vap ...

physics
a quarterback throws a pass to a receiver. the release point for the football is 1.8 m above the ground. he projects the ball with a speed of 20 m/s at an angle of 40 above the horizontal. If the pass falls incomplete, how long is it in the air? If the pass falls incomplete, ...

Mathematics
800

Math
simplify 14/22

Math
simplify 64/76

Math
simplify 13/17

Math
Simplify -17/21.

chemistry
A piece of copper wire has a density of 8.9 g/cm3. What is the density of a chunk of copper that has a mass of 250 grams?

geometry
line segment AB and XY are congruent. if AB=5N-8 and XY= 2n+19 what is the legth of AB?

chemistry
what are some examples of suspensions?

MATH
20

Chemistry
Will you check this answer for me? the half-life of strontium-87 is 2.8hr. What percentage of this isotope will remain after 8 hours and 24 minutes? ?? 34%

Pre-Calc
A hall 200 feet in length is to be designed as an ellipse if the foci are 35 feet from the center. How high will the ceiling be from the center?

Pre-Calc
A mirror is in the shape of a paraboloid. If a light source is 6 feet from the base along the axis of symmetry and the opening is 12 feet across, how deep should the mirror be?

math
Colin is working to earn some money for a new cd player. On Saturday he earned half as much as he did on Sunday, but twice as much as he did on Friday. During those three days he earned \$70. How much did he earn each day?

5th grd math- metric conversion
30m=6000

probability
I was asked to find the probaility if a board game uses the deck of 20 cards. And find how many have the number 3. I came up with 4/20 and was told that I'm on the right track but I need to find P(3 and 3) with replacement and without replacement. What does this mean?

Probability
How do I determine the probability of selecting a card greater than 9 or a black card?

probability
The odds against Paul Phillips winning the 100 yard dash are 7:2. Determine the probability that: • a) Paul wins. • b) Paul does not win. How do I set this up to find out the equation/answer?

chemistry
4. Use the pressure of the butane gas (your answer from question #3 above), along with the temperature and volume recorded in the lab, to determine the moles of butane gas collected in the lab. You will use the ideal gas law (and the ideal gas constant, R) for this calculation...

Maths
Between 10 and 11 m

Math
Would the set up be [(p-->q)^~p]-->~q

Math
If you pass general chemistry, then you can take organic chemistry. You pass general chemistry. ˆ You can take organic chemistry. Let P = you pass general chemistry Let Q = you can take organic chemistry I came up with P - >Q P therefore Q But my set up is wrong...

precalc
f(x)=Log1/3^(9x)find the domain and range.

chemistry
consider the following reaction: 2C2H6(g)+7O2 (g)-->4CO2(g)+6H2O (g) delta H = -3120kJ If 3.00g of ethane are burned, how many kJ of heat are produced?

chemistry
consider the following reaction: C3H8 (g)+ 5O2 (g)--> 3CO2 (g)+ 4H20 (g) Delta H = -2440kJ The heat of formation of CO2 is -390 kJ/mol and the heat of formation of H2O is -240 kJ/mol. What is the heat of formation of propane?

chemistry
the following reaction is carried out in a bomb calorimeter: 4NH3 (g) +5O2 (g)-->4NO (g)+6H2O (g) The calorimeter constant is 45.0kJ/K. when 34.0g of NH3 are reacted in the calorimeter, the temp rises by 10 degrees C. What is the change in energy, delta E, for the rxn?"

Math
Time's 5

Spanish
when you are talking in past tense. for example: you went swimming yesterday.

Chemistry-Help!!
If I have 10mL of 1.0 M Ba(OH)2 solution and add it to 2.5L of water. What is the concentration of hydroxide ions in the diluted Ba(OH)2 solution?

Chemistry-Confused!!
You have 10mL of a 1.0 M Ba(OH)2 solution and add it to 2.5L of water. What is the concentration of hydroxide ions in the diluted Ba(OH)2 solution?

MATH HELP!!
what is the unit rate for 67.92 for 4gal

Chemistry-urgent!
Yes, but would that give me 63 mL or 250 mL. That's where I get confused.

Chemistry-urgent!
What volume of 2.5% (w/v) KOH can be prepared from 125 mL of a 5.0% KOH solution?

An aqueous mixture containing starch (a colloid), NaCl, glucose, and albumin (a colloid) is placed in a dialyzing bag and immersed in distilled water. Which of the following correctly describes the location of the indicated substance after dialysis? A-albumin, inside B-starch ...

Chemistry
I'm having trouble with molarity. What is the molarity of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100.0 mL?

Math
Find the present value of the annuity necessary to fund the withdrawal of \$600 per month for 10 years, if the annuity earns 2% per year and if there is to be \$10,000 to be left in the annuity at the end of the 10 years. (Assume end-of-period withdrawal and compounding at the ...

Math
Find the present value of the annuity necessary to fund the withdrawal of \$600 per month for 10 years, if the annuity earns 2% per year and if there is to be \$10,000 to be left in the annuity at the end of the 10 years. (Assume end-of-period withdrawal and compounding at the ...

social studies
new england colonies 2. what? what happend to the coloonists at roanoke? what happend to the colony at sagadaco? 5. where? where was roanke? where was sagadahoc? where was james feild?

social studies
What was the name of William Lloyd Garrison's anti-slavery newspaper.

math
what is the perimater of a 90 degree angle multiply by 2 a 17 multiply that answer by 7 add 90 and subtract 23.

writing
My teacher said,write 10 sentences 5 for each Paragraph..she said here is your topic. If you would write a speech what would you write it about. Now im not writing a speech im writing i i would write a speech what would i write it on im havinc alot of trouble help please....???

math
if you used 2 hundreds, 18 tens, and 4 ones to model a number. what number did you model?

Chemistry
A 112 mL solution of 0.351 M HCl is added to 52.0 mL of 0.161 M HCl. What is the new concentration of HCl?

Chemistry
what is the concentration of Cl- after adding 250 mL of 0.10 M AlCl3 to 250 mL of 0.30 M Ca(NO3)2

I need a website that will tell me everything about The Independence Debate:Consequences for the Colonies?

Chemistry
4.90g Ba

English
How do you fix this pronoun agreement. The first theme that the author demonstrates is to not let people with a disability feel abnormal, but for them to use the abilities that they have to help them build their self-confidence.

Quick ?
I doing a sample lesson plan for my english class. I want to show a movie that realtes to the book that were reading and the movie is 106 minutes. I teach each class for 50 minutes a day. How many days would it take to finish the movie and how long is 106 minutes?

Art
Why is important for children to draw pictures of things that scare them (otherwise what does the child learn from this?

math
If you had a fraction strip folded into tenths what fractional lengths could yu measure with the strip?

math
The tread life of a particular tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 2000 miles. What is the probability that a randomly selected tire of this brand will last longer than 58,000 miles? A.0.7266...

alegebra
i don't know any i need help asap!

science
A ball is dropped from a cliff and has an acceleration of 9.8 m/s2. How long will it take the ball to reach a speed of 24.5 m/s?

Math
Mike can mow a lawn in 3 hours. Paul can mow the same lawn in 2 hours. How long would it take both of them working together to mow the lawn? The answer is suppose to be 20/9. This is what I did and I get 9/20. What am i doing wrong? 1.4x+1/5x=1 which gives u 9/20. I'm so ...

Math
Solve each inequality algebraically. |2x-1|-2<3 I don't understand how the answer is -2<x<3

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