Friday
December 2, 2016

# Posts by Martha

Total # Posts: 298

8th algebra
Thank you
October 31, 2016

8th algebra
I only need help writing the equation, not solving it. This is sothe problem. Manuel's budget allows no more than \$50 per week for gasoline and car washes. Gasoline costs \$2.30 per gallon, and a car wash costs \$8.50. This week, Manuel gets a car wash. Write an inequality ...
October 31, 2016

Chemistry
74. Sodium hydrogen carbonate is also known as baking soda. When this compound is heated, it decomposes to sodium carbonate, carbon dioxide, and water vapor. Write the balanced equation for this reaction. What volume of carbon dioxide gas at 77 degrees C and 756 mmHg will be ...
September 30, 2016

Chemistry
Consider a mixture of two gases,A and B, confined in accosted vessel. A quantity of a third gas C, is added to the same vas sekar the same temperature. How does the addition of gas C affect the following: a. The partial pressure of gas A. b. The total pressure in the vassal, c...
September 30, 2016

Algebra
Please how I solve this equation giving the domain of -3 I know that i have to replace the -3 where the x is but I do not know how to solve with the fraction. Thank you. -2x+1/3y=4
September 22, 2016

partial maths
x^3/(5x^3-1) resolve into a partial fraction
September 16, 2016

History
1. A d and e 2. B 3. A 100% correct
September 7, 2016

MATH
In a race, a triathlete runs 1/3 of total distance, cycles 2/5 of the total diatance and swims the ramaining distance. he swim 1.200 meters. What is the total distance of the race?
June 7, 2016

a snail travels about 0.13 cm in one minutes.how far would it travel in 7 minutes if it keeps up the same speed?About how long would it take to go 3 m?
June 6, 2016

Math
On a centimeter dot grid, draw all the possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters. Label the lengths of two adjacent sides of each rectangle.
May 25, 2016

math
How many decimal digits in 2.00? 2 or 0?
May 19, 2016

urgent math
1.B 2.D 3.C 4.A and C 100%
May 3, 2016

life orientation
Three human rights violations and their examples
April 24, 2016

life orientation
express emotions on how bad corruption and fraud can be
April 12, 2016

solomon mahlangu high
Identify three courses or study fields you are interested in following after grade12 write them down in order of preference
March 14, 2016

There are 39 counters in a box. How would you divide the counters to represent the ratio 5:8 ? Thank you.
March 9, 2016

6th grade math median range mode
The numbers are 47, 55, 46, 64, 69, and 52..... What is the mode?...I can't figure this out because I thought the mode was the number that appears most often. Thank you.
February 17, 2016

geometry
Triangle DEF contains two congruent acute angles. The sum of the measures of the two congruent acute angles is greater than 90 degrees. Anna concludes that the triangle must be an acute triangle. Which best describes her conclusion?
February 16, 2016

A circular path two feet wide has an inner diameter of 150 feet. How much farther is it around the outer edge of the path than around the inner edge ?
February 4, 2016

circumference...math
A Ferris wheel makes 12 revolutions per ride. How far would someone travel during one ride if the diameter is 63 feet?...thanks!
February 4, 2016

Math
9 people are coming to Sam's party. If each person eats 1/5 of the cake, how many slices does each person get?
February 1, 2016

Thank you so much! I get it now😊
January 21, 2016

Can someone please help me ? I think I'm supposed to put all the like terms together, but I can't remember how to do this. I asked my mom but she can't remember. Solve for x 6x - 6 equals 2x - 26 Solve for x 2x - 1 equals -5x - 85 Thank you very much. Can you explain?
January 21, 2016

Health
Don't NEVER EVER TRUST MS.Sue
October 22, 2015

chem
A 1.27-g sample of a mixture of AgNO3 and NaNO3 is treated with excess Na2S(aq). The precipitate is filtered off, dried and weighed. The dried precipitate weighs 0.46 g. What is the percentage by mass of NaNO3 in the original mixture?
October 12, 2015

Calculus
Let u=f(r) and r=|x|=(x1^2 +···|xn^2)^1/2. Show that􏰀 ∑ 1 to n (∂u/∂xj)^2 = (f′(r))^2
September 27, 2015

math
order of operations; simplify 4.5-10-2(1-2)+5 thank you!
August 25, 2015

math
is the number 1 a prime or composite number?
August 20, 2015

Kgothala secondary
Life oriatation, description of recent service delivery protest
August 5, 2015

Kgothala secondary
Life oriatation
August 5, 2015

life orientation
Evaluation of current protests
May 24, 2015

life orientation
Research on process of campaigns and protests
May 24, 2015

Spanish
Thanks so much for all your suggestions and all your time! I really appreciate all your help!
April 19, 2015

Spanish
Can someone proof my spanish composition? Aprenda a vivir con la diabetes tipo 2 La diabetes tipo 2 es, desafortunadamente, una enfermedad muy común en los EEUU. Si usted ha sido diagnosticado con la diabetes tipo 2, es normal sentirse confundido, triste o enojado. ...
April 19, 2015

social studies
I have this question 2 for hw
March 24, 2015

Math
Assume the shoe is sold at 50% profit margin (profit as % of sales). If the cost of raw material were to increase by 50%, what would the new profit margin be? Cost of manufacturing a shoe: Raw materials = 25% Labor = 12.5% Marketing & Advertising = 25% Distribution = 25% ...
February 2, 2015

science
How might the history of the US be different if the first European settlements had occurred on the west coast instead of the east coast
January 15, 2015

english
Thanks
January 6, 2015

english
I have to find the correct article that goes in the sentence. 1.)Usually ___ strange bird is a timid animal. Article- the.
January 6, 2015

math
Jane is organizing her 24 dolls into equal sized piles. What is the possible number of dolls that could be in each pile?
October 14, 2014

statistics
The following list is a sampling of the costs of various statistics textbooks used at several colleges. Give the upper confidence limit for a 95% confidence interval estimate for the mean cost of all statistics textbooks. 109.95; 92.00; 96.70; 84.85; 92.60; 84.45; 90.95; 77.00...
July 31, 2014

Physics
I know this is long but can someone just explain it to me? Please? Don't have to give the answer, I'm just confused :( 1. An experiment was devised to investigate the effects on the temperature of a cup of hot tea when lemon juice is added at different time intervals. ...
June 3, 2014

Math
A triangular piece of land has a base of 12 yards and a height of 16 yards.what is the area of the piece of land?
April 23, 2014

physics
From a to b Wg= Fx cos 90 = 0 Wn= Fx cos 90 = 0 Wnet=Efk - Eik. Which is = to 1/2mVf^2 -1/2 mVi^2. Fxcos(0)= Efk. Cos of 0 =1. Vi =0 so use Efk Fx=1/2mVf^2 2Fx/m = Vf^2 Vf^2= square root of2Fx/m Vf= 9.77m/s X = distance, m= mass, F= force, V= velocity Efk = final kinetic ...
March 23, 2014

physics
7. ( 11E ) a) Find the momentum of an automobile of mass 2630 kg traveling 21.0 ms .b) Find the velocity ( in km/h ) of a light auto of mass 1170 kg so that it has the same momentum as the auto in part ( a ).
March 23, 2014

physics
52.(52G) A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350 N. For the first 15 m the floor is frictionless, and for the next 15 m the coefficient of friction is 0.30. What is the final speed of the crate?
March 23, 2014

math
What numbers value is 100, 000 less than 1, 547, 298?
March 19, 2014

statistics
A clinical trial test a method designed to increase probability of conceiving a girl.In study 375 were born and 300 were girls Use sample data to construct 99%confidence interval of percentage girls born
March 17, 2014

Math
Find the standard form of the equation of a line passing through (2, 3) and parallel to 3x + 5y = 2
March 8, 2014

Math
If x varies directly as y, and if x = 6 when y = 15, find y when x = 30
February 20, 2014

Math
If x varies inversely as y, and if x = 24 when y = 6, find x when y = 15.
February 20, 2014

Math
The 80 students in the 5th grade at north side elementary school voted for their favorite animal after a trip to the zoo.the elephant received 3/5 of the votes.how many votes did the elephant receive.
February 5, 2014

Math
It takes Kelly 3/4 hour to bake a small loaf of bread.how many loaves of bread can she bake in 3 3/4 hours if she bakes one loaf at a time.
February 5, 2014

Math
Tickets for the school play were \$6.00 and 1/5 of each ticket paid for the cost of printing the programs.how much of each ticket went towards printing the programs.
February 5, 2014

Math
The area of a rug was 45 square ft.the rug was separated equally into four colors.how many square feet were there in each color?
February 5, 2014

Physics
all of the above
February 4, 2014

Geometry
In geometry, a common standard setting for enlarging on a copy machine is 121 percent. What does this mean?
November 25, 2013

Geometry
How many diagonals does a prism have whose base is a regular polygon with 3 sides?
November 24, 2013

Sam Long anticipates he will need approximately \$225,000 in 15 years to cover his 3-year-old daughter’s college bills for a 4-year degree.How much would he have to invest today at an interest rate of 8 percent compounded semiannually?
October 25, 2013

math
Joanne and Ed Greenwood built a new barn with an attached arena. To finance the loan, they paid \$1,307 interest on \$45,000 at 4.0%. What was the time, using exact interest?
October 14, 2013

physical science
A 12-kg iron ball is dropped onto a pavement from a height of 90m. Suppose half of the heat generated goes into warming the ball. What is the temperature increase of the ball in degree C
October 6, 2013

college algebra
Find the intercepts of the function f(x). f(x) = (x - 2)2(x2 - 9)
September 12, 2013

Math
James has 10,000 to invest. If he invest money in a savings account that pays 4% APR, calculate the following: a) how long will it take to have a total of 15,000 if interest is compounded quarterly (3months)? b)how much will he have after 7yrs if interest is compounded yearly...
April 28, 2013

math
Compound Interest Question James has 10,000 to invest. If he invest money in a savings account that pays 4% APR, calculate the following: a) how long will it take to have a total of 15,000 if interest is compounded quarterly (3months)? b)how much will he have after 7yrs if ...
April 28, 2013

Public Speaking
April 26, 2013

Public Speaking
To avoid speaking in monotone, a strategy to use can include: A. changing pitch and tone of voice. B. voice inflection. C. varying rate and pace of speaking. D. All of the above I read through my notes and I see A and B as answers, I don't see anything about C... But I'...
April 26, 2013

accounting
how to The beginning inventory of merchandise at Francesca Co. and data on purchases and sales for a three-month period are as follows:
March 27, 2013

math
I made a area in my question i meant to say how do you work this problem?what precent of 3.5 is 7.2.
March 15, 2013

math
HOW THE YOU WORK THIS PROBLEM?WHAT PRECENT OF 3.5 IS 7.2
March 15, 2013

Economics
In two or three paraghaphs,discuss how industrial growth in Texas has affected its natural resources
January 15, 2013

Physics
What is the magnitude of the electric field 0.3 m from a 10-4 C point charge?
December 2, 2012

math
perform the indicated operation and expres your answer in simplest radical form ^3 sqrt 8 / ^4sqrt 8
November 25, 2012

economics
galacia will produce and export soup and fancia produce and export galacia
November 13, 2012

calculus
Wiley jumps straight up in the air from the edge of a cliff so that when he comes down he falls off the cliff. The cliff is 40 feet off the ground. His height t seconds after he jumps is s= -16t2 + 12t + 40.What is the maximum height? What is his maximum velocity?
November 12, 2012

calculus
let f(x) = 2x^5-5x^4 find open intervals on which f is a) increasing b)decreasing Find values of x at which f has c) relative max and min find open intervals d) concave upward e) concave downward c) find the inflection points of f
November 4, 2012

Physics
How many calories it take to elevate the temperature of 10 gr of water-from 26C to 50C?
October 22, 2012

MATH
BENNY PLAYS TWO SPORTS. HE PLAYS SOCCER FOR 3/4 OF THE TIME AND PLAYS BASEBALL FOR 30-MINUTES. HOW MANY MORE MINUTES DOES HE PLAY SOCCER THAN BASEBALL? My answer is he plays soccer 7 minutes more. Am I correct. How do I make a diagram for this problem. Thanks
October 9, 2012

Math
thanks
October 8, 2012

Math
Ms. Kenny grew 3/5 as many zinnias as Mr. Hadam. If Ms. Kenny has 12 zinnias, how many zinnias do they have in all. I calculated that they have 20 zinnias total. Am I correct. Thanks
October 8, 2012

Jr. Math
thanks
October 8, 2012

college algebra
solve x^6 - 64 = 0
October 5, 2012

College Algebra
solve the equation for r: S= (rL-a)/(r-x)
September 25, 2012

math
how would you fidn the area of a square if you know one side is 4 feet long
September 17, 2012

Math
2336.8
September 12, 2012

physics
Landing with a speed of 87.7 m/s, and traveling due south, a jet comes to rest in 939 m. Assuming the jet slows with constant acceleration, find the magnitude and direction of its acceleration. Magnitude of acceleration
September 5, 2012

math
a convenience store sells 1650 items,are of 12/25 junk food
July 24, 2012

Physics
Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart, measured on the Earth's surface, are Copenhagen (55.67° N latitude), and Rome (41.90° N latitude)? The two cities lie ...
June 15, 2012

math
The equation of a parabola is y=(x-5)^2-4. Is the point (5,-6) on this parabola?
June 6, 2012

math
Find the value of C that will make 25x^2-40x+c a perfect trinomial.
June 6, 2012

math
Nine cards are numbered 1-9. what is the probability of drawing a number greater than 6 or an odd number. I know the answer is 2/3 but I don't know how you find the probability when it says "greather than 6 OR and odd number"... how do you calculate the OR?
June 6, 2012

math
Given a right triangle ABC, if the measure of angle B=30 degrees, the measure of angle C=90 degrees, and AB=5cm, find AC
June 6, 2012

Chemistry - Equilibrium
You have an unknown concentration of ammonia. When you add 15.0mL of a 0.400 M HCl solution to 50.0mL of the ammonia solution, the pH of the solution becomes 8.75. What is the concentration of the original ammonia solution? [Kb (NH3) = 1.8 x 10^-5]
April 25, 2012

math
only 5% of the carbon-14 in a small wooden bowl remains , how old is the bowl? Hint, half-life for carbon –14 us 5730 years
April 4, 2012

math 125
solve the system 2x-3y-z=-8 x-y--z=-2 -4x+3y+z=6
March 24, 2012

physics
A certain spring stretches 5.0cm when a load of 40N is suspended from it. How much will the spring stretch if 46N is suspended from it(and it doesn't reach its elastic limit)?
March 22, 2012

math
how would you solve: (t-2)(3t-1)(4t+3)-(2-t)(2-t)(t+5)
February 26, 2012

biology
Can someone please explain to be the concept of - Rate of exchange is proportional to a cells surface area and ... the amount of exchange material is proportional to a cell's volume. (the topic we are learning is called "Animal form and function")
February 14, 2012

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