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Posts by Jose

Total # Posts: 493

math
The scatter plot shows the study times and test scores for a number of students. How long did the person who scored 81 study? A. 50 minutes B. 81 minutes C. 16 minutes D. 100 minutes helppppppp!!!!!

Math
Can someone help me with this math problem? 14 divided by 2 1/3

Physics
For mass 1, Set up your x coordinate so that Tension is in the positive, and so that the Force of Friction and the x component of weight is in the negative. No other forces exist in the x. Set up your y coordinate perpendicular to the surface of the ramp. Make the normal force...

math
on the 1st problem i don't understand how x is being added when the sign is subtraction

math
d+3(d-4)=20 please explain

math
x-(12-x)=38 please explain

math
A college bookstore ordered six boxes of red pens. The store sold 32 red pens last week and 35 red pens this week. Five pens were left on the shelf. How many pens were in each box?

algebra
18

math
draw a box-and-whisker plot for the following set of data. 62,76,41,87,60,42,47,69,65.

ALGEBRA
Yolanda is 180 centimeters tall. How many meters tall is that?

mechanics
if a man moves up the escalator and the escalator moves down he has, for example, Vm/g=2stair/s and the escalator has Ve/g =1stair/s, so we have resultant velocity =3stairs/s. Now, assume that as the escalator is not moving man´s Vm/g moving up is 20stairs/s. So the man&...

CHEMISTRY
HOW MANY GRAMS OF ice at 0oc can be melted into water at 0oc by the additon of 75.0 of heat ? hfus = 6.01 kj/mo

angular momentum
a 8.20 kg particle P has a position vector of magnitude 6.90 m and angle θ1 = 42.0° and a velocity vector of magnitude 6.70 m/s and angle θ2 = 25.0°. Force , of magnitude 8.90 N and angle θ3 = 28.0° acts on P. All three vectors lie in the xy plane. ...

chemistry
the volume of a gas is 250 mL at 350 kPa pressure. what will the volume be when the pressure is reduced to 50 kPa, assuming the temperature remains constant?

math
three coins, a half-dollar, quarter, nickel are tossed at the same time. to say that there is an outcome xyz means that the half-dollar, landed x, the quarter landed y, and the nickel landed z. the eight equally likely possibilites can be listed as follows: HHH HHT HTH HTT THH...

science-biology
what do cells do?

Psyc Research Methods
Yes, there is

geometry
a trapezoid has an area of 4 square units and a height of 1 unit. What are the possible whole-number lengths for the bases

Physics
The acceleration should come out as 0.1g actually. So, v = sqrt(2*a*s) = sqrt(2*0.1g*1) = 1.40m/s

math
Find the experimental probability. Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black? A. B. C. D.

Applied physics
two men are carrying a 12m uniform ladder on their shoulders. Man A is 1.0m from one end, and man B is 3.0m from the other end. If the beam has a mass of 200kg, determine the load supported by each man.

chemistry
Jessica's teacher has asked her to bring her 0.40 moles of sodium chloride to the laboratory. She should bring approximately _______ grams.

Biology
Spermatozoa and Oocytes... I thnk it should be that..

Math
For a particular mass of gas, the volume (Vcm^3) and pressure (Pcm) of mecury (Hg) are related by P=kV^n, where k and n are constants. Reduce the relation to a linear one and determine the values of k and n given that when v=110cm^3, P=50.3cm and when V=230cm^3, P=18.6cm

Math
For a particular mass of gas, the volume (Vcm^3) and pressure (Pcm) of mecury (Hg) are related by P=kV^n, where k and n are constants. Reduce the relation to a linear one and determine the values of k and n given that when v=110cm^3, P=50.3cm and when V=230cm^3, P=18.6cm

Physics
A car starts from rest and accelerates uniformly to a speed of 50km/h in 18s. If the wheels of the car are 70cm in diameter. Calculate; a.The final angular velocity of the wheels b.angular acceleration

Physics
A mass m=400g hangs from the rim of a wheel of radius r=15cm. When released from rest, the mass falls 2.0m in 6.5sec. Find the moment of inertia of the wheel

applied physics
you are standing on a 100m tall buiding above a street and your friend is standing vertically below the building. When you drop a stone, your friend simultaneously throws the identical stone as yours at a speed of 50m/s in the same straight line. Calculate the time taken for ...

Geometry
A grid shows the positions of a subway stop and your house. The subway stop is located at (7, -6) and your house is located at (-9, 5). What is the distance, to the nearest unit, between your house and the subway stop

physics
a girl lifts a 160-n load a height of 1 m in a time of 0.5 s. what power does the girl produce

applied math
Sorry Orbital speed

applied math
if the mean radius of the moon is 1.73x10^6m and its mass is 7.35x10^22kg.determin the average speed?

applied chemistry
a 69.3g sample of oxalic ac acid, H2C2O4, was dissolved in 1.000L of solution. How would yo prepare 1.00L of 0.150M H2C2O4 from this solution?

applied chemistry
M = 0.0285 mols/0.050 L M = 0.57 mols/L thanks i now know the formular bt hey how would u define Molarity and in what part of living does it apply? Am trying to understand it.

applied chemistry
A 50.0mL volume of AgNO3, solution contains 0.0285 mol AgNO3 (SILVER NITRATE). What is the molarity of the solution?

MATH
So the answer is X=67

Math
Find the volume of the solid generated by revolving the region bounded by y= 5 cosh (x) and y= 5 sinh (x) between x = 0 and x = 1 about the x-axis

Language arts and writing
The first compact microwave ovens were sold in 1960. Everybody didn't use them until the 1980's.

chemistry
Hey, if all hope is lost try this...let me know if it makes sense.... use stoicheometry. (287 amu of Li/ 1 )*( 1 mol/ 6.02 x 10^23) * ( 6.94g Li/ 1 mol) this makes more clearer as fractions on paper....hope this helps. i did this and got 3.31 x 10^-21. (numbers may vary ...

Math
X=x^2+3x-10. Graphed as a parabola Include the x,y table please. And line of symmetry.

Math
4x^2-4 radical3x +3=0 Using quadratic formula

physics
im not even good

Math
9t^2-3t=0. Solve using quadratic formula

geometry
If AC is 50 feet, and AB is 40 feet, which is the length of BC?

Microeconomics
a 40 b 10 c 4 d 40 e 5 f 10 g 2 h 3 i

algebra
the volume of a cylindrical tank is V(h)= pi(h^3+6h^2+9h) The volume of a tank can be modeled by V(L)= L(L-3.2)(L+6.8)

calculus
Why do we end up with f(x) instead of f(t) on the second fundamental theorem of calculus?

calculus
Why do we end up with f(x) instead of f(t) on the Second Fundamental Theorem of Calculus?

algebra
b) The sales representative later indicates that there are two and one quarter as many homes available with the first floor plan than the second. Write an equation that illustrates this situation. Use the same variables you used in part a. Express the answer with decimal ...

Physics
For mass 1, Set up your x coordinate so that Tension is in the positive, and so that the Force of Friction and the x component of weight is in the negative. No other forces exist in the x. Set up your y coordinate perpendicular to the surface of the ramp. Make the normal force...

mystery number
291

Physics
dafuq

Physics
A 61 kg skateboarder wants to just make it to the upper edge of a "quarter pipe", a track that is one-quarter of a circle with a radius of 2.89 m. What speed does he need at the bottom?

physics
A driver traveling at 25 mph in a school zone can brake to an emergency stop in 8 ft. Under similar conditions, what would be the braking distance if the car were traveling at 40 mph?

Math
How to find the missing values 0.38=(3*0.1)+(_*_)

verbs
thanks

verbs
enjoys

verbs
what are the verbs

verbs
kris enjoys action movies at the theatre

chemistry
Calculate the relative molecular mass of a gas if a 500cm3 sample at 20¢ªC and 1 atomic mass of 0.66g

government
idk

american history
Which of the following statements about the Southern planter's world is most accurate?

english
at what point does abigail first began feeling cold?what effect does this event have on danforth?

ethics and social responsibilty
what are some examples,explore the challenges Goodman presents to relativism

I need help to unscramble these words in spanish
Seclaalue

Chemistry
In this experiment the only source of Ca2+ ions is Ca(OH)2. Using the experimental Ksp value, calculate the slubility of Ca(OH)2 (in mol/L) in .30 M NaOH. Experiment Ksp = 1.69x10^-5

physics
For part a) T1 = Upper cord T2 = Lower cord theta = angle between vertical rod and upper cord = arcos(1/1.25) R = radius of circular motion = sqrt((1.25^2) + 1^2) M = mass of object T1sin(theta)+T2sin(theta) = (MV^2)/R Solve for V Turn your V (should be in m/s) into revs/min. ...

Statistics
77.3%

chem
How many liters of 12.3 molar NaOH stock solution will be needed to make 12.4 liters of a 1.2 molar NaOH solution? Show the work used to solve this problem.

Science
describe how our solar system formed.

Chemistry
How much water can be produced from the complete reaction of 2.56 L of oxygen gas, at STP, with hydrogen gas answer in units of g.

Chemistry
How much water can be produced from the complete reaction of 2.56 L of oxygen gas, at STP, with hydrogen gas answer in units of g.

algebra 1
Triple a number plus 7 results in 16. What is the number?

math
The Answer is The Probality of picking a pink Or Blue is 4 divide in 2 is 2 1.2

chemistry
How many moles of molybdenum are in 1.235 g

physics
In the figure , the total resistance is 10.0 kOmega, and the battery's emf is 28.0 V. If the time constant is measured to be 40.0 mu s. Calculate the total capacitance of the circuit.Calculate the time it takes for the voltage across the resistor to reach 15.0 V after the ...

Chemistry
How many grams of MgCl2 are required to make 350mL of a 0.56M solution of MgCl2?

vareiables
can you help me because i need a good science fair project

Algebra
Evaluate the exprestion: 2(3x+1)/-4 for each value of "x". A.x=9 B.x=2 C.x=-1 D.x=14

math
rate 96 words in 3 minutes

6th grade science
true or false. genes are a small section of dna on hromosomes tha have information about a trait.

math
y=-2x+1

physics
A 5.75 µC and a -2.61 µC charge are placed 19.8 cm apart. Where can a third charge be placed so that it experiences no net force?

physics
two point charges have a total charge of 277 µC. When placed 2.00 m apart, the force each exerts on the other is 20.8 N and is repulsive. what are the charges on both?

physics
What is the magnitude of the force a +23 µC charge exerts on a +3.5 mC charge 49 cm away?

statistics
A researcher wants to determine if two brands of cigarettes contain the same amount of nicotine. The data is shown in the table. With a significance level of 0.05 to that conclusion can be reached. Set the interval for a confidence of 95% Sample A: 40.3 37.5 37 41.7 29.8 33.5 ...

statistics
A company is considering installing new machines to assemble its products. The company is considering two types of machines, but it will buy only one type. The company selected eight assembly workers and asked them to use these two types of machines to assemble products. The ...

statistics
A researcher wants to determine if two brands of cigarettes contain the same amount of nicotine. The data is shown in the table. With a significance level of 0.05 to that conclusion can be reached. Set the interval for a confidence of 95% Sample A: 40.3 37.5 37 41.7 29.8 33.5 ...

statistic
A company is considering installing new machines to assemble its products. The company is considering two types of machines, but it will buy only one type. The company selected eight assembly workers and asked them to use these two types of machines to assemble products. The ...

calculus
A cylindrical metal can with an open top is to be constructed. the can must have a capacity of 24pie cubic inches. the metal used to contruct the bottom of the can costs 3 times as much as the metal in the rest of the can. Find the dimensions(radius and height) of the can that...

math
what is the resipical of 9

physics
you grab the diameter divide it by 2 4.9 / 2 = 2.450 You them grab the answer above and covert it (miles to meters) by multiplying it by 1609.34 2.45 x 1609.34 = after you have the answer for above square root it and that will give you the final answer in rad/s

chemistry
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC*Delta T to calculate the temperature change of the 314 g of water. under the following conditions: A 14.7 g ice cube ...

chem
You can use the Density equation: Density=Mass/volume. They give you the volume and density so you need to manipulate the Density equation to solve for mass. That should give you the grams of acetone in the bottle of acetone and you can use that to solve for the acetone ...

Chem
A 12.3 vessel was found to contain N2, Ar He, and He. The total pressure in the vessel was 987 torr and the partial pressures of nitrogen, argon, and helium were 44 torr, 486 torr, and 218 torr, respectively. What was the pressure of neon in the vessel?

Math
If you have 21tiles and there are twice as many blue than red and twice as many red than green how many red green and blue are there.

Biology
When living cells break down food molecules, energy is A)stored as a phosphate group added to ADP. B)stored as ATP. C)released as heat. D)all of the above

project management
How did it contribute to gross underbids and successive cost escalations?

chemistry URGENT!
No you fuc*ing morons...

Enaglish
avoiding predicate subject mismatching how to correct this sentence Measles is where a viral infection causes skin eruptions.

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