Saturday
December 20, 2014

Posts by kendall


Total # Posts: 66

mixture problems
A chemist has two solutions of sulfuric acid. One is a 25% solution, and the other is a 50% solution. How many liters of each does the chemist mix to get 10 liters of a 40% solution? 25% solution L: 50% solution L:
November 21, 2014

mixture problems
How many gallons of 45% butterfat cream must be mixed with 500 gallons of 3% butterfat milk to obtain a 5% butterfat milk?
November 21, 2014

math
A manufacturer of lapel buttons test marketed a new item at a university. It was found that 1,000 items could be sold if they were priced at $4, but only 600 items could be sold if the price were raised to $8. On the other hand, the manufacturer finds that 400 items can be ...
November 21, 2014

Physics
Bats are extremely adept at catching insects in midair. If a 62-g bat flying in one direction at 9 m/s catches a 6-g insect flying in the opposite direction at 4 m/s, what is the speed of the bat immediately after catching the insect?
October 31, 2014

Physics
A skateboarder of mass 38.0 kg is riding her 3.90-kg skateboard at a speed of 5.40 m/s. She jumps backward off her skateboard, sending the skateboard forward at a speed of 8.5 m/s. At what speed is the skateboarder moving when her feet hit the ground?
October 31, 2014

Algebra
Fiona invested $1000 at 8% compounded continuously. At the same time Maria invested $1100 at 8% compounded daily. How long will it take for their investments to be equal in value? Assume there are 365 days in every year. Please help I have tried everything and cannot solve ...
June 27, 2014

science
On average, froghopper insects have a mass of 12.3 mg and jump to a height of 428 mm. The takeoff velocity is achieved as the little critter flexes its leg over a distance of approximately 2.0 mm. Assume a vertical jump with constant acceleration. How long does the jump last (...
October 25, 2013

science
On average, froghopper insects have a mass of 12.3 mg and jump to a height of 428 mm. The takeoff velocity is achieved as the little critter flexes its leg over a distance of approximately 2.0 mm. Assume a vertical jump with constant acceleration. How long does the jump last (...
October 25, 2013

Math
16. Alison uses a total of 94.5 cups of dog food each week to feed her three dogs. Each dog eats the same amount. How much does each dog eat in one day? 19. | x - 2 | = 2 Choose from -4, -3, -2, -1, 0, 1, 2, 3, 4. Find all of the numbers that are solutions of the equation.
October 10, 2013

Algebra
When writing an equation in slope-intercept form, does be have to be a positive number or can it be negative? For example, y=-3x-5.
August 31, 2013

Algebra
Sorry, it says 8^log(8^5)
April 7, 2013

Algebra
Use properties of logarithms to find the exact value of each expression. Do not use a calculator. 8^log 8^5
April 7, 2013

Algebra
How do you find the domain and range?
April 7, 2013

math
What do you get when you double 1/8?
January 28, 2013

math
Erica had 7/8 of a pizza left. Her friend ate 1/6 f the pizza that was left. What fraction of the whole pizza did her friend eat? PLEASE HELP!
January 22, 2013

Pre-Cal Trig
Two lookout towers are situated on mountain tops A and B, 4 mi from each other. A helicopter firefighting team is located in a valley at point C, 3 mi from A and 2 mi from B. Using the line between A and B as a reference, a lookout spots a fire at an angle of α = 37° ...
November 28, 2012

Pre-Cal
Angles of elevation to an airplane are measured from the top and the base of a building that is 40 m tall. The angle from the top of the building is 37°, and the angle from the base of the building is 40°. Find the altitude of the airplane. (Round your answer to two ...
November 28, 2012

Physics
A 21.3-g bullet is fired from a rifle. It takes 3.77 × 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 779 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
October 11, 2012

physics
Over a time interval of 1.72 years, the velocity of a planet orbiting a distant star reverses direction, changing from +18.2 km/s to -18.8 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) during this interval. ...
September 11, 2012

physics
A motorcycle has a constant acceleration of 4.33 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from (a) 40.0 to 50.0 m/s, and (b) 70.0 to 80.0 m/s?
September 11, 2012

physics
Two motorcycles are traveling due east with different velocities. However, 5.81 seconds later, they have the same velocity. During this 5.81 -second interval, motorcycle A has an average acceleration of 4.07 m/s2 due east, while motorcycle B has an average acceleration of 16.1...
September 11, 2012

physic
The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.2 s.
September 11, 2012

physics
A sprinter explodes out of the starting block with an acceleration of + 2.29 m/s2, which she sustains for 1.13 s. Then, her acceleration drops to zero for the rest of the race.
September 11, 2012

algebra
A line of chorus girls
May 5, 2012

geometry
have 35sqft to cover using 8"tiles how many needed to do the job?
March 12, 2012

essay
Pretty Little Liars :D<3
March 9, 2012

finance
Templeton Extended Care Facilities, INC. is considering the acquisition of a chain of cemeteries for $370 million. Since the primary asset of this business is real estate, Templeton’s management has determined that they will be able to borrow the majority of the money ...
March 5, 2012

Math
This is the error message I see, how do I fix this: listarray:argument must be an array;found:b--anerror.2 debug this try: debugmode(true)
February 8, 2012

chemistry
Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. What mass of hydrochloric acid reacts when 87.7 grams of aluminum dissolves? The equation is 2Al+6HCl=2AlCl3+3H2
January 31, 2012

Physics
A deorbit burn has been performed. During this deorbit burn a pre-calculated Delta V (change in velocity) of 290 ft/s (or 88.4 m/s) will be used to decrease the Shuttle’s altitude from 205 miles to 60 miles at perigee. The Shuttle’s Orbital Maneuvering System (OMS) ...
January 3, 2012

Algebra POW HELP!!!!!
what is the answer to pow4
October 6, 2011

CHEMISTRY
how many meter are in 500 cm? can you please show the work
September 20, 2011

Chemistry
The heads of matches are made with P4S3. this material is made by heating a mixture of red phosphorus and sulfur: 8P4 + 3S8----> 8P4S3 If a match company uses 5435 grams of phosphorous (p4) with an excess of sulfure, how many grams of P4S3 can be made? Can someone step by ...
July 11, 2011

Chemistry
Please help. Calculate the pH at the following points during the titration of 100.0 mL of 0.20 M acetic acid (Ka for acetic acid = 1.8 x 10-5) with 0.10M sodium hydroxide 1. before addition of any base 2. after addition of 30.0mL of base 3. after addition of 100.0mL of base 4...
April 26, 2011

Chemistry
Thank you so much! I would really appreciate it! [OH-]= 4.2x10^-4 M pH=10.6 or 11 Are these answers correct?
April 18, 2011

Chemistry
Calculate [OH-] and pH for the following strong base solution: 10.0 mL of 0.0105 M Ca(OH)2 diluted to 500.0 mL
April 18, 2011

physics
There is a box attached to a spring. The spring has a spring constant of 39 N/m. The ì between the box and the surface is 0.3. The box has a mass of 1 kg. What is the maximum distance that the spring can be stretched from equilibrium before the box begins to slide back?
February 1, 2011

8th grade math
hi my name is kendall in 9 in 4th grade i want to skip grades im a nerd im very smart and I talk alot but I stop talkng in school so I hope you help me skip grades to 7th grade thank you.
November 20, 2010

math
-18 > x/6-10 let "x" be the unknown number solve the inequality.
February 4, 2010

Spanish
The irregular stem of Poder in the preterite is "pud" then add your ending
January 14, 2010

Math
Thank you! I multiplied the wrong reciprocal, flipping 3/4 to 4/3!
January 14, 2010

Math
I am having a hard time with this word problem: A road crew has 3/4 ton of stone to divide evenly among 4 sidewalks. How much stone does the crew need for each sidewalk. a. 3/8t b. 3/16t c. 5/16t d. 5/24t This is what I did: 4 divided by 3/4 is 4/1 x 4/3 is 12/3...not one of ...
January 14, 2010

7th grade science
What kind of inheritance governs foot length?
January 4, 2010

7th grade science
Write a pedigree in which there are parents and 4 children, 1 girl and 1 boy are color blind and the other girl and boy are not. I HAVE A FEW QUESTIONS- ?- For a girl to be colorblind does her mother have to be colorblind too or just a carrier?her father? ?- If two people are ...
January 4, 2010

THANK YOU
THANK YOU SO MUCH BOBPURSLY.you are a great help to me, i kind of already knew that but it reassured me that i was doing the right thing, i was confused on what side to put my variable on but now i see that i can put it on either side
January 4, 2010

7th grade math
"x" is the variable 11x=8x-6
January 4, 2010

7th grade math
"x" is the variable 11x=8x-6
January 4, 2010

science
I am not sure the exact anwser but this is a generalization, they have certain adaptations to help them survive in their environment. So their adaptation to water is walking onn it.
January 4, 2010

8th grade math
Thanks Dr. Bob222.
September 30, 2009

8th grade math
Light travels approximately 5.87 X 10^12 miles in one year. This distance is called a light year. Suppose a star is 2 X 10^4 light years away. How many miles away is that star? Please help with detailed steps to solve problem. Thanks.
September 30, 2009

8th grade math
Light travels approximately 5.87 X 10^12 miles in one year. This distance is called a light year. Suppose a star is 2 X 10^4 light years away. How many miles away is that star? Please help with detailed steps to solve problem. Thanks.
September 29, 2009

8th Grade Math
How do you solve this equations? (xy^-3)^-5 (3x^4)(4x^12) ab^-6 ______ c^0d^-4 x^3y^0(z^-4) Can you please show it step by step? Thanks.
September 26, 2009

1st grade
Some schools offer progras where they can have a tutor come and help your child, or set them up with KUMON it's a great program that also helps with math and reading of course.Speak to your childs teacher and principal to see if the teacher will promote your child to read ...
September 25, 2009

social studies - geography
How did texas geography affect the native american in the gulf coast?
September 17, 2009

4th grade
What was the Geography and Climate in 1600-1700 Colonial America?
February 2, 2009

6th grade math
How do I find a unit rate?
December 8, 2008

Math
Find the indicated outputs for f(x)= 5x^2-2x The 2 after the ^ is an exponent. f(0)=0 f(-1)= f(2)=
August 3, 2008

Math
-25 ¡Ü 4x-8 ¡Ü-1 The solution is {x|-17/4 ¡Ü x ¡Ü 7/4
August 3, 2008

Math
Find the indicated outputs for f(x)=5x^2-2x. f(0)= f(-1)= f(2)=
August 2, 2008

Math Geometry
375
July 24, 2008

Math Geometry
the area of a triangle is 1/2 bh find the area of the given triangle: when b=50 inches h= 15 inches
July 24, 2008

Integers
9 - -9 =
April 17, 2008

math
ok maybe this is clearer.... [40/(2+i)]-[35/(2-i)]
December 16, 2007

math
40 35 - 2+i 2-i How do I solve this? there is a division sign between the 40 and 2=i and another one between 35 and 2-i
December 16, 2007

math
Help! I am gettting a C in math and I am so cofussed! How do I study better but have fun while I do it? I love math, I take it as a game, I take the #'s and use their equations. I know you might not like problem solving q?, but try to get a tutor & I know u can do it. GOOD...
November 13, 2006

help
hi i just need help with what the greatest common factor of 51 and 34 is 4+0
November 7, 2006

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