Tuesday
September 2, 2014

Posts by Joe


Total # Posts: 2,049

Physics
A man has a mass of 80kg on the Earth's surface. Part A How far above the surface of the Earth would he have to go to "lose" 13% of his body weight?
September 26, 2013

Physics
A gun is fired and a 56g bullet is accelerated to a muzzle speed of 130m/s . Part A If the length of the gun barrel is 0.60m , what is the magnitude of the accelerating force? (Assume the acceleration to be constant.)
September 24, 2013

Brain Teaser Help
C o m i c the ears wet eyebrows chicken right=right ieieceiie a l u m i n u m pa r tici ple
September 22, 2013

Math
Write the power ss a product and then evaluate 3 to the second power.
September 16, 2013

math
a=(4.8km/h - 4.5km/h)/.5h
September 15, 2013

Math
miss handson ask students to prepare booths for the Fall Fair. In all, 40 students volunteered. miss Hanson wanted no more than six students in a group. if one teacher helps each group, how many teachers will be needed?
September 14, 2013

Math
miss handson ask students to prepare booths for the Fall Fair. In all, 40 students volunteered. miss Hanson wanted no more than six students in a group. if one teacher helps each group, how many teachers will be needed?
September 14, 2013

Math
miss handson ask students to prepare booths for the Fall Fair. In all, 40 students volunteered. miss Hanson wanted no more than six students in a group. if one teacher helps each group, how many teachers will be needed?
September 14, 2013

Math
11/12 - 3/4 Help
September 12, 2013

english
what is a verb?
September 9, 2013

chemistry
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.9cm . Its mass is 1.3kg . Calculate the density of the metal.
September 1, 2013

Math
Miss Sue made an error putting in the question,can you please help me again. You are also making a fruit salad. You have already selected apples, oranges, kiwi, strawberries, and blueberries which total $17.28, you still need to purchase bananas. The bananas cost $0.44 per ...
August 31, 2013

math
You are also making a fruit salad. You have already selected apples, oranges, kiwi, strawberries, and blueberries which total $17.28, you still need to purchase bananas. The bananas cost $0.44 per pound. You choose three bunches that weigh 3/4lb, 11/3lb, and 15/8lb. Determine ...
August 31, 2013

chemistry
If 51J of heat is added to an aluminum can with a mass of 23.0g , what is its temperature change? Specific heat capacity of aluminum is 0.903 J/g∘C.
August 29, 2013

chemistry
If 51J of heat is added to an aluminum can with a mass of 23.0g , what is its temperature change? Specific heat capacity of aluminum is 0.903 J/g∘C.
August 29, 2013

physics
Find the area of a rectangle whose sides are 12.68 cm and 98.5 mm.
August 26, 2013

math
containers of sides are on sale. You can get 2 containers for $3.00 and 1 for $1.95. Determine the cost of three containers of sides.
August 25, 2013

chemistry
What is the density of a cube that has a mass of 134 g and the side of the cube measures 2.75
August 21, 2013

math
Members of the West High School Band were hard at work practicing for the annual Homecoming Parade. First, they tried marching in rows of 12, but himself to bring up the rear left Andrew. Then the director told the band members to march in columns of eight, but Andrew was ...
August 21, 2013

marketing
Michael Soles--owner of Soles Shoe Store--recently discovered that shoe stores in his trading area have an average markup of 40%. Upon investigation, Michael found that his average markup is $15 on shoes that he sells for $45. This suggests that:
August 11, 2013

math
from a standard 52 card deck, how many 7 card hands have exactly 5 spades and 2 hearts?
July 31, 2013

math
From a standard 52 card deck, how many 5 card hands will have 2 clubs and 3 hearts?
July 31, 2013

Physics
IF YOU ADD THEM ALL UP AND DIVIDE BY 69 UR ANSWER IS STILL WRONG LOL
July 25, 2013

chem
The speed of your ship in still water is 20 knots.Your ship traveled 70 miles downward in channel in the same amount of time it traveled 45 miles upward the channel.Calculate the rate of the channel current.
July 22, 2013

Math
Define a variable, and write an equation. If x is the number of candy bars that Jason started with, x - (1/3)x - 3 = (11/30)x is an equation that can be solved to find the solution.
July 21, 2013

algebra
Difference of two squares: Example: x^2 - 9 factors to (x+3)(x-3) Perfect squares: x^2 + 6x + 9 = (x+3)(x+3) x^2 -6x + 9 = (x-3)(x-3) Cubes: x^3 - 27 factors to (x-3)(x^2 +3x +9) x^3 + 27 factors to (x+3)(x^2 -3x +9) Can you see the pattern?
July 2, 2013

Statistics
This is definitly an error because Ho was rejected when it was true. Google Type I and Type II errors and you will find the definition of each and then you will be able to figure out which error happened here.
July 2, 2013

Math
To find the range, substitute the values from the domain. Example: y = -3x + 4 y = -3(-3) + 4 = 9 + 4 = 13 y = -3(-2) + 4 = 6 + 4 = 10 So, we are finding the range of 13 and 10 s0 far
July 2, 2013

Statistics
You want to use a two-tailed t-test. You do not want to use matched pairs. books set things up differently, but here is one way to do it.. group 1 = dog owners group 2 = no dog Ho: mu1 - mu2 = 0 Ha: mu1 - mu2 does not = 0 If you are allowed to use a statistics calculator (like...
July 2, 2013

Trignometry
use the law of cosines to start and find side c. Then use the law of sines to find remaining angles.
June 30, 2013

physics
A 3 N weight slides down a ramp made of sandpaper. The coefficient of friction is 0.8, and the ramp is at an angle of 50° to the horizontal. How could you calculate the magnitude of the friction force? A. 3 N × sin(50°) B. 3 N × 0.8 × 50° C. 3 N &...
June 27, 2013

Calculus
a = 14, b = 21
June 20, 2013

Math 6th Grade Level
If he used 100 bags of the flour, this means he used 1/2 of the flour (100 is 1/2 of 200). So, 1/2 of 680000 is 340000 oz that were left. Therefore, he had 340000/5000 bags (you can do the math).
June 19, 2013

pre-cal
The 3-point line in basketball is 23 ft 9 in away from the point on the floor vertically below the center of an 18-in diameter rim. The rim is 10 ft above the floor. Kim shoots a three pointer using a 9-in diameter ball from the 3-point line that just clears the basket. The ...
June 19, 2013

math
-23/21
June 17, 2013

Math for Educators
The first ones are correct. Does it matter what base your solution is for the last one?
June 17, 2013

Math for Educators
The statement, "when I divide them by 2, there is a remainder of 1" means that the numbers must be odd, therefore they can't end in a 0. I'm only seeing 2 answers, 25 and 85
June 17, 2013

math
v(x) = 30000-1000x v(7) = 30000-1000(7) = $23000
June 17, 2013

Calculus
The slopes of the tangent lines are equal to the derivative of the parabola at the points. y ' = 2x, so y'(a) = 2a and y'(-a) = -2a. You can also use the slope formula m = (y2-y1)/(x2-x1) to find the slopes of the tangent lines. Therefore m = (a^2+3-(-6))/(a-0)=(a^...
June 17, 2013

Calculus
if p(2) = 6, substituting in the p(x) function, 6 = 4a + 2b + c p ' (x) = 2ax + b, therefore if p ' (2) = 2, this means that 2 = 4a + b p '' (x) = 2ax + b, therefore if p '' (2) = 3, this means that 3 = 2a and a = 3/2 substituting 3/2 for a in 2 = 4a + ...
June 17, 2013

Physics
Thanks!
June 17, 2013

Physics
A trapeze artist swings from one 35-ft long trapeze to another trapeze. She releases one trapeze at a 30 degree angle relative to the vertical. She flies through the air, catching the other trapeze 18 ft away at the same elevation. What was her release velocity?
June 17, 2013

Algebra
3x^2(2x^2 - 7x - 4) =3x^2(2x+1)(x-4)
June 17, 2013

rochester
A 3kg stone falls from rest a top a cliff, hitting the ground traveling 42m/s. How much force does it do on the ground below if that ground is compressed 0.30 meters? (w= F*d=KE-PE)
June 10, 2013

english
plz give me solutions of 10 class bbc compehensions answers
June 8, 2013

math
SOLVE FOR P, Q, &R p + 1/(Q+ 1/R)= 25
May 30, 2013

math
SOLVE FOR P, Q, &R
May 30, 2013

chemistry
explain why a balloon with 1.00 mol xe gas in it has the same volume as balloon with 1.00 mol he gas in it
May 21, 2013

physics
How long does it take light to travel through a 2.7 mm-thick piece of window glass?
May 19, 2013

algebra!!!! please help me!!!!
This is a Brilliant question. Please do not answer.
May 6, 2013

Algebra
Prove by mathematical induction that 3^(3n+1) + 2^(n+1) is divisible by 5
May 5, 2013

Geometry
Lines p and q are parallel and are intersected by transversal r. If angle 1 = 4x degress and angle 2 = 2x+24 degrees, what is the measure of angle 2?
April 30, 2013

American Government
Proportional representation systems like those in Western Europe encourage the formation of smaller parties by enabling parties to: A. win legislative seats even though they do not receive a majority of votes in elections. B. receive campaign funds from government in ...
April 30, 2013

chemistry
im so confused about this question Calculate the pH of a solution that has [H3O+] = 5.5 x 10-3.
April 29, 2013

math
mrs nelson has a rectangular flower box that is 5 feet long & 2 feet tall. she wants the width ofn the box to be no more than 5 feet. if the width is a whole number, what vare the possible volumes for the flower box?
April 29, 2013

algebra
A student traveled 206 km in 16 days. At the same ratio, how far would the student travel in 64 days?
April 26, 2013

Math
A gardener is installing a circular garden. The radius of the circle 28 feet. He needs to know the circumference in order to buy materials for the edging. What is the circumference if he uses = . The circumference is __ feet
April 25, 2013

Math
A lot is in the shape of a trapezoid. The sum of the bases is 180 feet. If the area of the lot is 8,100 square feet, what is the distance across the lot, i.e. the altitude of the figure? The altitude of the trapezoid is __ feet.
April 25, 2013

trignometry
If it helps the answer according to this ACT compass sample test questions print out is 6.93. How to solve it is the question ... C is a 90 degree angle. AB is 8 and the hypotenuse. AC is the base .... we don't know it's length. It's on page 14 if you google this...
April 24, 2013

chemistry
platinum metal currently costs $1700 per troy ounce ( note: this is different than a regular ounce 1 troy ounce =31.1035 g. what would the costs be, in dollars , to purchase enough platinum to form a solid cone with maximum radius 0.750 m ?
April 24, 2013

chemistry
A sample of copper metal containing 7.738*10^24 atoms is drawn into a cylindrical wire with radius r = 0.625 mm . How long must the wire be in meters?
April 24, 2013

Math
Compute the number of vinyl tiles, measuring 25 cm each side, needed to tile a kitchen measuring 102 ft. by 18 ft.
April 24, 2013

Math
Write 70,633.29 two other ways.
April 23, 2013

Chemistry
What [PB2+] should be maintained in Pb(NO3) to produce solubility of 1.0*10^-4 mol PbI2/L when PbI2 (s) is added? Ksp for PbI2 is 7.1*10^-9 I can't figure it out...
April 21, 2013

Science-Chemistry
Methyl amine is a weak base with a pKb=3.35. Consider the titration of 30.0mL of .030M of Methyl amine with 0.025M HCl. a) Write the appropriate equation for the reaction. b) Calculate K for the reaction in part (a). c) Calculate pH of the initial methyl amine solution (0mL ...
April 19, 2013

Physics
A singly charged positive ion has a mass of 2.74 10-26 kg. After being accelerated through a potential difference of 268 V, the ion enters a magnetic field of 0.450 T, in a direction perpendicular to the field. Calculate the radius of the ion's path in the field. cm
April 17, 2013

Math
Remy can chop 5 carrots in 3 minutes. How long will it take him to chop 120 carrots?
April 16, 2013

Algebra
simplify and write in standard form (2p^2-p)+(7p^4+P^3+2p)
April 15, 2013

Chemistry
What volume of H2(g), stored at 26°C at a pressure of 141 atm, would be needed to run an electric motor drawing a current of 8.4 A for 4.8 h?
April 14, 2013

math
Marty walks to school 4 days each week. The walk talks 15 minutes. How much time does it take marty to walk to school & home each week. Is this correct? 15×4=60 it takes him an hour each week
April 14, 2013

Physics
An object that is 32 cm in front of a convex mirror has an image located 17 cm behind the mirror. How far behind the mirror is the image located when the object is 24 cm in front of the mirror?
April 11, 2013

Physics
An object is placed in front of a convex mirror with radius of curvature = 17 cm. The object's height is 3.5 cm and it is initially 25 cm in front of the mirror. Find the (a) location and (b) height of the image. Next the object moves closer to the mirror, so the object ...
April 11, 2013

Math
Kurt cut pizzas into wedges measuring 40 degrees. If each person eats one piece of pizza How many people could he feed with 2 pizzas
April 10, 2013

General Chemistry II
Also, not sure if I did this correctly: Compute the solubility in moles/ liter for each sample titrated. 2.3 g KHTar in water. 2.3/18= .128 S= (.128/0.05)= 2.56 moles/ liter Is this correct?
April 10, 2013

General Chemistry II
Why is the Ksp value larger for NaNO3 and KNO3 than water?
April 10, 2013

SS Please check answers
your not helping at all
April 8, 2013

Mathematics
System 5x+8y+6z=14 2x+5y+z=12 -3x+6y-12z=20
April 8, 2013

Math
pie chart
April 5, 2013

chemistry
3.61*10^-9
April 4, 2013

geometry
In the diagram, circle A is tangent to circle C, and segment BE is tangent to circle A. The radius of circle A is 11 meters and the radius of circle C is 8 meters. Find the area of triangle ABE to the nearest square meter.
April 4, 2013

math
What is the value of t in the solution to this systems of linear equations? 2s – 3t = –1 3s – 4t = 0 a)–5 b)3 c)-7/3 d)4
April 3, 2013

math
i got 8s-12t=-1 and 9s-12t=0 i don't get how you subtract this?
April 2, 2013

math
how do you subtract this?
April 2, 2013

math
What is the value of u in the following system of linear equations? 4u + 3v = –1 3u + 2v = 1 a) 5 b)-11/2 C)-7 d)19/3
April 2, 2013

math
Look at the revenue for videos rented (v) on a given day at two different video rental stores below r = 2v + 10 r = 1.6v + 18 After how many video rentals will the revenues of both stores be equal? a)25 b)45 c)70 d)20
April 2, 2013

Chemistry
Na2SO4 solution is slowly added to a solution which contains .10 M Ba (2+) and .1 M Pb(2+). which of the following statements descrives the result of the addition of Na2SO4
April 1, 2013

Math
the perimeter of a rectangular field is 140m. If the length is increased by 15m and breadth is decrease by 5m, the length will become 3 times the breadth. Find the length of breadth of the field.
March 28, 2013

math
the ages of a son and father are in the ratio 3:8. if the son is 35 years younger than his father. find their ages.
March 28, 2013

Chemistry
you're the best! thank you!!
March 24, 2013

Chemistry
The Ka of a monoprotic weak acid is 8.11 x 10 ^ -3. What is the percent ionization of a 0.125M solution of this acid?
March 24, 2013

Chemistry
Assuming complete dissociation, what is the pH of a 2.55 mg/L Ba(OH)2 solution?
March 23, 2013

Language Arts
Or C
March 19, 2013

Language Arts
Oh OK I was asking it for homework help and it was an abcd question. I'm thinking it might be D then
March 19, 2013

Language Arts
Help Ms. Sue! Please check if I'm correct on this question. * Which of the sentences below is the best option for a thesis statement? A.) An after-school program at the community center might involve classes, sports, and other activities in which children can take part. B...
March 19, 2013

Physics
A 50.0-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 20.7° below the horizontal is applied to the box. The coefficient of kinetic friction between the box and the surface is 0.300. What is the acceleration of the box?
March 19, 2013

Science (physics)
A particle P is launched from a point O with an initial velocity of 60m/s at an angle of 30 degrees to the horizontal. At the same time, a second particle Q is projected in the opposite direction with initial speed of 50m/s from a point level with point O and 100m from O. You ...
March 18, 2013

Algebra
3 real numbers that form a geometric progression have sum equal to 175 and product equal to 17576. What is the sum of the largest and smallest numbers?
March 18, 2013

Trigonometry
I think I did use the sine law but I am just not sure how to get a+b?
March 18, 2013

Trigonometry
I calculated it and a got a totally different answer
March 18, 2013

Trigonometry
Let N be a 5-digit palindrome. The probability that N is divisible by 4 can be expressed as \frac{a}{b}, where a and b are coprime positive integers. What is the value of a+b?
March 18, 2013

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