Wednesday
May 4, 2016

Posts by JOAN

Total # Posts: 253

Statistics
In a certain Math class, the probabilities have been empirically determined for various numbers of absentees on any given day. These values are shown in the table below. Find the expected number of absentees in a given day. Number of absentees, x 0 1 2 3 4 Probability, P(x) 0....
April 20, 2016

Statistics
. Two cards are drawn at random, without replacement, from a standard 52-card deck. Find the probability that: (a) both cards are the same color (b) the first card is a face card and the second card is black
April 20, 2016

Maths- Calculus
The region R bounded by y=e^-x and y=0 and lying to the right x=0 is rotated about the y-axis
April 14, 2016

science (physics)
A copper wire with cross sectional area 0.00030cm^2 is to be used in lifting a 100g object.How fast can the object be accelerated if the wire is to stretch not more than 0.10%? What i know is that first find the elongation & then that will help to find acceleration..
March 1, 2016

algebra
a rectangular plot of farmland will be bounded on one side by a river and on the other sides by a single strand electric fence . with 800m of wire at your disposal,what is the largest are you can enclose, and what are its dimensions ?
January 31, 2016

math,algebra
no
January 31, 2016

math
Thank you very much Reiny. Done it. :) :)
November 5, 2015

math
Why -x^2?
November 5, 2015

math
A garden in the farm of a square, is surrounded by a path which is 1m wide on two opposite sides and 1/2m wide on the other two opposite sides. If the area of the path is 17msquared, calculate the : Perimeter of the garden Area of the space covered by the garden and the path
November 5, 2015

math
1.352 pounds is what fraction of a short ton? A. 169/250 B.77/100 C. 2/4 D. 140/223
October 27, 2015

english
what is a run-on sentence?
October 24, 2015

English
so its B. its the answer. is it right?
October 23, 2015

English
Which group of words below is the predicate of the sentence: The quarterback threw the ball down the field. A)The quarterback threw B) Threw the ball down the field C) ball down the field D)down the field
October 23, 2015

English
Which is the group of words is a fragments sentence: A) After the store don't run around. B)After the store. C) Don't run around.
October 23, 2015

English
Why is it none of them? My answer is B.is it okay to choose as a run-on sentence?
October 23, 2015

English
Pick which group of word below is a run-on sentence: A) Don't run around. B) After the store don't run around. C) After the store.
October 23, 2015

Algebra 2
Does this verbal phrase translate into the algebraic expression correctly? Five more than a number divided by four x/4+5
October 17, 2015

English Writing parts of speech
yes is write why are all the school busses yellow? B
October 17, 2015

math
find the base and height of triangle in ratio 8to 5 and area is 320
September 15, 2015

Business 318
8. An open systems perspective places great significance on understanding the relationship between an organization and its __________. (Points : 1) personnel practices. internal resources. chain of command. capital structure. environment.
May 11, 2015

Algebra 2
How many arrangements are possible using the letters in the word FUZZY if each letter "Z" is distinctly different than the other? How many arrangements are possible if the letter "Z" is interchangeabe with the other? Explain your reasoning.
April 15, 2015

Physics
A particle moving along the x-axis has its velocity described by the function v =2t squared m/s, where t is in s. Its initial position is x = 2.8m at t = 0 s. At 2.7s , what is the particle's position?
February 14, 2015

Physics- bobpursley
It's weird because I'm only give 25m and 5m in this problem. It looks like this kinda | | 5m | |_________________ 25m I'm suppose to find the horizontal velocity with this
December 21, 2014

Physics- Horizontal Velocity
How do you calculate the horizontal velocity of an object in a projectile problem?
December 21, 2014

Math( Can you help me with starting this problem)
Oh okay, thanks
December 17, 2014

Math( Can you help me with starting this problem)
= 4pi r^2(15)??
December 17, 2014

Math( Can you help me with starting this problem)
How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dv/dt , the change in volume with respect to time, which is 15 cubic centimeters per second. The rate we want to find is dr/dt...
December 17, 2014

mathematics of investment
A note for 9,000 dated August 12, 2002, is due on October 20, 2002 with simple interest at 9%. If the note is discounted on August 20, 2002 at 13%, how much the proceeds be?
December 8, 2014

mathematics of investment
Accumulate 3,200 for 2 years and 6 months at 5 1/2% simple discount.
December 2, 2014

mathematics of investment
Mark Lopez went to his bank to find out how long it will take for P10,000 to amount to P10,700 at 12% simple interest. Express answers in days.
November 27, 2014

accounting 2
if amores has the capital of 1,616,000 while andrada is to invest sufficient cash to give him a one-third interest in the partnership. how much andrada's capital?
November 25, 2014

mathematics of investment
date of investment sept. 4, 2002 and date of maturity feb. 12, 2003. what is the approximate no. days and actual no. of days?
November 22, 2014

mathematics of investment
on what day will 8,000 earn 180 interest when invested on April 25, 2002 at 9% simple interest? use ordinary interest and actual time.
November 22, 2014

physics
A steel ball of mass m=5 g is moving at a speed of 250 m/s toward a large mass M=2.2 kg which is connected to a relaxed spring, as shown below. When the ball reaches the large mass it collides and bounces off without losing any kinetic energy. The large mass is connected to a ...
November 7, 2014

Physics
A crane is lowering two boxes downward at a constant velocity. The cable from the crane is attached directly to the upper box, m1, which has a mass of 95kg and a second cable hanging from the upper box supports the lower box, m2, which has a mass of 140kg. Determine the ...
October 30, 2014

physics
A ball on the end of a string is whirled around in a horizontal circle of radius 0.467 m. The plane of the circle is 1.24 m above the ground. The string breaks and the ball lands 2.49 m away from the point on the ground directly beneath the ball’s location when the string...
October 5, 2014

Algebra
T-Riffic T shirts for a $20 design fee plus $8 charge per shirt printed, what is the algebraic rule?
September 26, 2014

Chemistry
Thank you
September 22, 2014

Chemistry
How much energy(in calories)would it take to heat 13g of water 2 degrees Celsius?? 1.00cal/1g C = 13 x 2 = 26 Calories Is that right?
September 22, 2014

Business Math
Portion is found by _____ the rate times the base
September 9, 2014

Business Math
Base is found by __________ the portion by the rate
September 9, 2014

Business Math
Treadmill, cost is x, amount of markup $880.00, selling price of $2,335.00, what is percent markup based on cost?
September 5, 2014

government
I say 3 too
September 5, 2014

Business Math
The Flower Power Bakery makes 200 cherry cheesecakes at a cost of $2.45 each. If a spoilage rate of 5% is anticipated, at what price should the cakes be sold to achieve a 40% markup based on cost?
September 5, 2014

Business Math
Carousel Toys has Romper Buckaroos, wooden rocking horses for toddlers, on a 30% markdown sale for $72.09. What was the original price before they were marked down?
September 5, 2014

Business Math
The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells dinners at an 80% markup based on cost. They decided to offer a $1.00 off ...
September 5, 2014

Business Math
Dylan's Bicycle Shop offers a new bicycle on sale for $259.92 after a 10% markdown. What was the cost of the bicycle to Dylan if the markup was 30% based on the cost? Round
September 5, 2014

Business Math
In October, a hardware store purchased snow shovels for $8 each. The original markup was 50% based on the selling price. In December the store had a sale and marked down the shovels by 20%. By January 1, the sale was over and the shovels were marked up to 15%. In March, the ...
September 5, 2014

Business Math
The Sweet Candy Shop buys 600 pounds of chocolate covered strawberries at $5.59 per pound. If a 10% spoilage rate is anticipated, at what price per pound should the strawberries be sold in order to achieve a 60% markup based on cost?
September 5, 2014

Business Math
Beacon electronics advertised a portable TV set on sale for $272.49 after a 35% markdown from the original price. What was the original price of the TV set? Round to nearest cent
September 5, 2014

Math
The Soft Step Floor Company purchases carpeting for $5.12 per sq. yard and marks it up 55% based on the selling price. What is the selling price per sq. yard? Round to nearest cent
September 5, 2014

Math
55.13
September 5, 2014

Math
The quick plumbing supply sells a set of faucets for $79.95. if a 45% markup based on cost was used, what was the cost of the faucets to quick plumbing?
September 5, 2014

Biology
When you have type 1 diabetes your body does not produce enough insulin. You have to eat correctly to maintain insulin levels. So if your heavy, you have to eat properly and loose weight. If your not use to eating properly, you will feel as if you are starving at first, but ...
September 5, 2014

Math
A whole seller buys plastic lamps for $18 each and sells them for $30.60 What is the percent markup based on cost?
September 5, 2014

math
simply (ab) cubed/ (3a) squared * b
September 3, 2014

math
find the domain, range, y and x-intercept, vertical asymptote, maximum, minimum, one-to-one, and horizontal asymptote of: a. f(x)=x^2-6x+5 b. f(x)=x^2-6x+5 on domain [-1,6]
September 3, 2014

algebra
A gardener has 120 ft of fencing to fence in a rectangular garden. one side of the garden is bordered by a river and so it does not need any fencing. a. what dimensions would guarantee a garden with an area of 1350 ft ^2 b. what dimensions would guarantee the greatest area? ...
September 2, 2014

Math
A gardener has 120 ft of fencing to fence in a rectangular garden. one side of the garden is bordered by a river and so it does not need any fencing. 1. what dimensions would guarantee a garden with an area of 1350 ft^2? 2. What dimensions would guarantee the greatest area? ...
September 2, 2014

stats
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours? A) About 25% B) About 50% C) About 75% D) About 68%
August 31, 2014

Chemistry Science
calculate the mass of carbon dioxide that would be produced when one gas of tank of gasoline (use octane) is burned in the air. assume an 80 liter gas tank and 0.703 g/ml as the density of octane
August 30, 2014

Algebra
The vertex of a graph is (2,-2) is it a minimum, yes or no?
June 12, 2014

Physics
238
May 2, 2014

percentages/word problem
$103.00 rounded
April 3, 2014

percentages/word problem
$272.49 = ( 1- .35) x $272.49 / 0.65 = $419.22 rounded
April 3, 2014

math
$5.90 rounded
March 1, 2014

math
A= $222.15
March 1, 2014

math
$10.00
February 26, 2014

Pre-Calculus
Find a quadratic function f such that f(1)=3, f(2)=5/2, f(-1)=1 I came out with 3 a+b+c=3, 4a+2b+c=5/2, a-b+c=1. And I know that I should do synthetic division but I am stuck.
January 8, 2014

math help please
Sorry but i forgot to pose what subject it was.
December 16, 2013

Reiny and steve do this for me please
1. Consider the functions f(x)=1/(x)+4 and g(x)=2/(x). Graph f and g on the same grid. a) Determine the points of intersection of the two functions. b) Show where f(x)<g(x). c) Solve the equation 1/(x)+4=2(x) to check your answer to part a). d) Solve the inequality 1/(x)+4&...
December 16, 2013

chemistry calculations
when 2.750 g of the oxide of lead is heated to a high temperature,it decomposes to produce 0.0640 g of oxygen gas and 2.686 g of some new lead oxide compound.How can you use this data to determine the formula of the new compound?
December 4, 2013

math
It is $35.98
November 26, 2013

Physics
Children sled down a 45 m long hill inclined at 26 degrees. At the bottom, the slope levels out. If the coefficient of friction is 0.1, how far do the children slide on the level ground?
September 23, 2013

Physics
Children sled down a 45 m long hill inclined at 26 degrees. At the bottom, the slope levels out. If the coefficient of friction is 0.1, how far do the children slide on the level ground?
September 23, 2013

English
B. Dangerous. The Dangerous equipment in the mills was unsafe for the workers, yet small children were forced to climb around and under it every day. It makes sense :) Have a great day!
September 23, 2013

English
I would say C. Outrage. Mother Jones was outraged that the owners wouldn't say anything about child labor because the mill owners controlled stock in their newspaper. Therefore, she decided to act on her outrage to get them a little publicity. Being enthusiastic would have...
September 23, 2013

science
any one who knows the answers to these questions 3 4 12 17 18 19 21
August 24, 2013

Statistics
PROBLEM 6 answer is The result is not statistically significant, so we conclude that the sons are taller than their fathers, on average.
August 10, 2013

Statistics
PROBLEM 9 The conclusion of the test is The treatment had a bad effect. is the right answer
August 10, 2013

mathematics
Hi, I'm not sure if I'm giving the correct answer for this problem. The question states; The values of computers in the years after its purchase date are listed in the following table. Year 0=1500, Year1=1200, Year2=1100,Year3 +1000, Year 4 = 800, Year 5 =400, Year 6= ...
July 9, 2013

chemisty
how many grams of sucrose must be dissolved in 1.5kg of water ot produce a solution which has a freezing point of -2.40 degrees C?
April 14, 2013

geometry
what is tan-1 3.5= to
March 26, 2013

math
find tan 30 degrees and tan 45 degrees using the 45-45-90 triangle therom and 30-60-90 triangle theorm
March 25, 2013

science
For a given area of land, the average rate of creep is 14 mm per year. How long will it take the area to move 1 m?
March 25, 2013

hs geometry
to find the height of a tree, a student 53 inches in height measures the length of the tree's shadow and the length of his own shadow. The student casts a shadow 63 inches in length and the tree casts a shadow 67 inches in length
March 17, 2013

English 102
Where do I find a Word Processor program in MLA format?
February 26, 2013

problem solving
three digit odd number divisible by 9 digits in consecutive order and digit in hundreds place is greater than the digit in the ones place?
January 28, 2013

Physics
A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?
November 27, 2012

Physics
A 17kg child slides down a 2.7m -high playground slide. She starts from rest, and her speed at the bottom is 1.8 m/s. What is the change in the thermal energy of the slide and the seat of her pants?
November 27, 2012

math
. Two cards are drawn at random, without replacement, from a standard 52-card deck. Find the probability that: (a) both cards are the same color (b) the first card is a face card and the second card is black
November 26, 2012

PHYSICS 1 ..
as she pick up her riders a bus driver traverses four successive displacements represented by the expression (-6.30 b)i-(4.00 b cos 40)i-(4.00 sin 40)j+(3.00 b cos 50)i-(3.00 b sin 50)j-(5.00 b)j here b represents one city block,a convenient unit of distance of uniform size; i...
November 25, 2012

UNIVERSITY PHYSICS 1
how did u get -12.4i and 4.87j
November 24, 2012

UNIVERSITY PHYSICS 1
what the answer to letter c. how can i find the answer please illustrate to me
November 24, 2012

UNIVERSITY PHYSICS 1
PLEASE ANSWERS MY ASSIGNMENT
November 24, 2012

UNIVERSITY PHYSICS 1
as she pick up her riders a bus driver traverses four successive displacements represented by the expression (-6.30 b)i-(4.00 b cos 40)i-(4.00 sin 40)j+(3.00 b cos 50)i-(3.00 b sin 50)j-(5.00 b)j here b represents one city block,a convenient unit of distance of uniform size; i...
November 24, 2012

PHYSICS
The cutting tool on a lathe is given two displacements, one of magnitude 4 cm and one of magnitude 3 cm, in each one of five situations (a) through (e) diagrammed in the figure below. Rank these situations according to the magnitude of the total displacement of the tool, ...
November 20, 2012

PHYSICS
while exploring a cave, a spelunker starts at the entrance and moves the following distances in a horizontal plane. she goes 75.0 m north, 250 m east, 125 m at an angle theta equal to 30.0 north of east, and 150 m south. find her resultant displacement from the cave entrance.
November 20, 2012

PHYSICS
how did you get (108.25,62.5) and (0,-150)
November 19, 2012

PHYSICS
while exploring a cave, a spelunker starts at the entrance and moves the following distances in a horizontal plane. she goes 75.o m north, 250 m east, 125 m at angle theta =30.0 north of east, and 150 m south. find her resultant displacement from the cave entrance.
November 19, 2012

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