Thursday
February 11, 2016

Posts by ANDREA

Total # Posts: 756

math
Justin has a total of 50 coins that are all nickels and quarters. He has 10 more nickels than quarters. How many of each coin does Justin have?
February 10, 2016

civics
what is the difference of the sixth and seventh amendment
February 10, 2016

Math lit,business studies,consumer studies,tourism
What career part should i follow
February 10, 2016

Math
I have 6 thousands,12 tens, 9 hundreds, 10 ones and 3 tenths. What number am I? This is a question on my 3rd grade daughters math homework and I'm completely confused. I think it may be 7030.03???
February 9, 2016

PHY 231
Two masses M1 = 6.30 kg and M2 = 3.30 kg are on a frictionless surface, attached by a thin string. A force of 40.3 N pulls on M2 at an angle of 28.5° from the horizontal as shown in the figure. Calculate the tension T in the string.
February 1, 2016

PHY 231
Mass m1 = 11.3 kg is on a horizontal surface. Mass m2 = 5.70 kg hangs freely on a rope which is attached to the first mass. The coefficient of static friction between m1 and the horizontal surface is μs = 0.573, while the coefficient of kinetic friction is μk = 0.130...
January 31, 2016

Global History II
Wow. Thank you for the quick lesson. Appreciate it. Have a good night.
December 29, 2015

Global History II
Russia wanted the waterway? Russia had a stronger army than Turkey. Sorry, got this question for homework and I can't find the answer in my notes or text, and don't remember talking about it in class, been struggling so I turned here
December 29, 2015

Global History II
Oh - so Turkey controlled an important waterway? Then why was Russia threat to them?
December 29, 2015

Global History II
I have no idea. I've been stuck on this one question for two days. I think it's B but I can't find any info to confirm it
December 29, 2015

Global History II
Throughout history, Russia has been a threat to Turkey because Turkey a) ha large supplies of minerals b) shared Russia's religious beliefs c) controlled an important waterway d) was the leader of the Arab states
December 29, 2015

Chemistry
What is the total number of joules of hear needed to change 200g of ice to water at O degree Celcius?
November 21, 2015

alegbra
From a point on a straight road, 2 cars are driven in opposite direction. One care at 69 miles per hour and the other at 27 miles per hour. How many hours will they be 480 miles apart?
November 7, 2015

science
why is it important for a cell to grow before it replicates its DNA?
November 1, 2015

Math
Socks are on sale 4 Pairs for $5. How much would you pay for 8 Pairs of socks?
October 20, 2015

physic
In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy is used to release a ball of mass 1.2 kilograms vertically downward, then what is the kinetic energy of the ball when it reaches the ...
October 16, 2015

Solving Linear Equations (Math)
The length of a rectangle is 5m shorter than three times the width. The perimeter is 46m. Find the length of each side.
September 24, 2015

IPC
A motorcyclist changes the velocity of his bike from 20.0 meters/second to 35.0 meters/second under a constant acceleration of 4.00 meters/second2. How long does it take the bike to reach the final velocity?
September 23, 2015

math - age problem
3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18?
September 13, 2015

math
1.) 3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18? 2.) Willie bought a jacket for 26.86 pesos. The jacket’s price had been ...
September 13, 2015

algeb
help please :) 1.) 3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18? 2.) Willie bought a jacket for 26.86 pesos. The jacket’s ...
September 13, 2015

math
Insert parentheses to make the statement true; 6 x 5 - 2^2 = 45
September 9, 2015

History
It is A. Increase in tres in exploration.
September 2, 2015

math
Which rate of speed is higher. A car completing a 500-mi race in 3 1/3 hours or a car completing a 300-hours in about 2 1/2 hours
September 1, 2015

Life Science
determing whether expired air contains CO2. 1.Formulate hypothesis 2.Aim 3. a) idependent V, dependent and controlled variables 4. methods step by step 5. observation
August 20, 2015

Chemistry
How many moles of Ag2CrO4 will be produced from 6 moles of AgNO3?
August 1, 2015

HCCC
7/3+1/3y=3y-3
June 27, 2015

algebra
That's wrong. ^
June 22, 2015

Geometry
Find the circumference of a circle with a radius of 6 in. A:6in B:12in C:6 pi in D: 12 pi in
June 1, 2015

Geometry
In a 30,60,90 triangle 1: If b=12, find c 2: If b=3,find a Letter a is on the 90° side, b is on the bottom near 60° and c is near 30°. Could anyone explain how to do this? It's hard to understand from my textbook.
May 19, 2015

Geometry
Cross multiplication 20+x = 6 ----- - x 5 Idk how to solve this with 2 x's
May 13, 2015

Geometry
Yes it's a 90, 45 45 triangle. And the letters go like this. A C B
May 12, 2015

Geometry
For questions 38-40 use the triangle. |\ 45° angles for the top of the | \ triangle and the bottom right | \C | \ 38: If a=12, find b | \ 39: If b=2,find c | \ 40: If c=12,find a -------- B. Is this pythagorean Therorem? When I try it that way it's not working out? ...
May 12, 2015

Geometry
Thank you!
May 5, 2015

Geometry
True or False? In an obtuse triangle all the angles are obtuse. I think it's false but I'm not sure.
May 5, 2015

Pre-Calculus
Explain the difference between sin^-1(x) and 1/sin(x), Are there different expressions for both these functions?
April 28, 2015

Geometry
A school's wrestling mat is a square with 50 ft sides. A circle 28 ft in diameter is painted on the mat. No wrestling is allowed outside the circle. Find the area of the part of the mat that is NOT used for wrestling. Use pie=22/7.
April 27, 2015

algebra
solve for x, y and z when 2x + 4y + 2z = 144 4x + y + 0.5z = 120 x + 3y + 4z = 144
April 18, 2015

math (algebra)
An entrepreneur has the following costs and revenue functions: TC = 30 + 3Q and TR = 4Q. Calculate the equilibrium quantity algebraically and graphically at the break-even point.
April 18, 2015

math
that is basically the statement don't understand it too.
April 18, 2015

math
it costs $80 to produce any quantity of output and $1.60 for any additional unit of output. write down the equation and graph the total cost function
April 18, 2015

Chemistry
CaCO3 ----------> CaO + CO2 When 45 grams of calcium carbonate decomposes, how many grams of calcium oxide are produced?
April 16, 2015

cylinder word problem
Caitlin enjoys italian ices with her friends. The place scoops the ices into a cylindrical cup that has a radius of 3 cm and a height of 8 cm. each ice is topped off with a half scoop. Each scoop has a radius of 3 cm. What is the total amount of ice that is in Caitlin's ...
March 24, 2015

Algebra help please
Part A: Divide (16x^5y^4 + 6x^3y - 2x^2y - 24x^2y^4) by -2x^2y. Part B: How would your answer in Part A be affected if the x2 variable in the denominator was just an x? Part C: What is the degree and classification of the polynomial you got in Part A? Is this first part right...
March 18, 2015

Acceleration
How did you do the work? I don't see it, not getting it.
March 5, 2015

Acceleration
I need help with the second part of this question. Please show work so I can see. Thanks. I. The fastest land mammal, the cheetah, can accelerate from 0 mi/hr to 70.0 mi/hr in 3.0 seconds. What is the acceleration of the cheetah? Give your answer in units of mph/sec. I got 23....
March 5, 2015

Economics
Clem Oatley could grow wheat and barley. He could grow 75 bushels of wheat or 125 bushels of barley using the same resources on an acre of his land. The price of wheat is $2.00 per bushel and the price of barley $ 0.80. Show the benefits to Clem from specialization. What ...
February 10, 2015

math work for workeys
Ok so I have an example and I used it for my work. First I'll show the example. Multiply a mixed number with a whole number. 4 times 2 and 1/8 . You multiply 4 times 2 and 4 times 1/8. Get 8 + 4/8. Simplified and got 8 and 1/2. The problem that I got was. You are a lead ...
February 3, 2015

math work for workeys
Ok so I have an example and I used it for my work. First I'll show the example. Multiply a mixed number with a whole number. 4 times 2 and 1/8 . You multiply 4 times 2 and 4 times 1/8. Get 8 + 4/8. Simplified and got 8 and 1/2. The problem that I got was. You are a lead ...
February 3, 2015

Pre-Calculus
find all the maximums of the polynomial f(x)=x^2-8x+11 What is the global (absolute) maximum?
February 3, 2015

Pre-Calculus
Describe the function resulting from reflecting f(x)=x^3+2x^2-x+5 about the x-axis and then the y-axis. Does the order of the reflections matter?
February 3, 2015

chemistry
isotope chromium -51 has a half life of 28 days. If the original sample had a mass of 28.0 grams, what mass of chromium -51 sample remains after 84 days?
December 11, 2014

Math
What is 8 and 2 over 20 minus 6 and 8 over 20 8 2 - 20 8=? 2=? 20=?
November 14, 2014

physics
a boom 4.7 meters,10000 kg, 20 degree angle, find torqe on the pivot i fond force=10000x9.81= 98100 N perpindiclar force = 33552 N torqe = 4.7x33552 = 167695 Nm i am told this is wrong
November 14, 2014

Pre-Calculus
I really need help on this question Simplify the expression by using a Double-Angle formula or a Half-Angle Formula cos^2 0/2-sin^2 0/2
November 12, 2014

math
A plane travels 1020 miles from New York City to Minneapolis in 3.3 hours. The return trip takes 2.75 hours. a. How many times faster is the return trip?
November 3, 2014

statistics
Suppose that in a large population the proportion of people that have a certain disease is 0.01. Use the Poisson approximation to find the probability that at least four people will have the disease in a group of 400 randomly selected people.
November 2, 2014

inequalities
Determine when the function f(x)=3x^3+4x^2-59x-13 is less than 7
October 13, 2014

Chemistry
How many liters of liquid nitrogen are produced when 360.0 L of nitrogen gas is liquified at 77.36 kl
October 9, 2014

Algebra
Perform the indicated operation or 6x/16+1/16
October 3, 2014

Pre-Calculus
Find a polynomial of degree 4 that has a integer coefficients and zeros 1,-1,2 and 1/2 (one half)?
September 14, 2014

Math
How many x-intercepts and how many local extrema does the polynomial P(x)= x(sqrt)3-4x have? How many x-intercepts and how many local extrema does the polynomial Q(x)=x^3-4x have? and If a>0, how many x-intercepts and how many local extrema does each of the polynomials P(x...
September 7, 2014

Biology
Plant -+ Deer --+ Tiger The first step in the energy chain that created the bonds of proteins in the tiger's muscle cells in the food chain shown above is the A. deer the tiger ate. B. plant the deer ate. C. photons the sun made. D. carbohydrates the plant made. I think it...
July 13, 2014

chemistry
Which one of these is NOT a mechanism of heat transfer Select one: a. Reflection b. Radiation c. Convection d. Conduction
June 22, 2014

chemistry
Which one of the following statements regarding ideal gas laws is FALSE? Select one: a. An ideal gas has an infinite heat capacity b. The macroscopic ideal gas equation is PV = nRT c. The temperature must always be measured in Kelvin (K) d. A single molecule of gas has kinetic...
June 22, 2014

English
Meredith- "I can't believe we graduated!" Sara- "Ugh high school why." Meredith- "Can you not." Sara- "Fine, I'm super excited and just can not wait!" Meredith- smirks "I know you're being sarcastic but lovely enthusiam...
May 4, 2014

English
What kind of dialogue should I write with this? Write an example of a very brief dialogue between at least 2 people who are talking about a recent event. The characters should be about your age(15).
May 4, 2014

english
I need help with some conversation examples! 1) Write an example of a conversation between at least 2 adults who are talking about the possibility of one of them getting a new promotion with their current company. 2) Write an example of a very brief dialogue between at least 2...
May 4, 2014

Chemistry
comparing and contrasting why is sodium hydrogen carbonate an effective antacid but sodium hydroxide is not?
April 27, 2014

Astronomy
3142
April 21, 2014

Math
Brian's boat has a top speed of 9 miles per hour in still water. While traveling on a river at top speed, he went 10 miles upstream in the same amount of time he went 20 miles downstream. Find the rate of the river current.
April 14, 2014

Calculus
At what interval is e^(-5x^2) concave up? I know the second derivative is 100x^2*e^-5x^2-10*e^-5x^2 but I just can not figure this one out. Thank you for your help!
March 28, 2014

social studies check answers
2 3 7 9 10 answers
March 25, 2014

philosophy (john dewey)
The expected outcome or pattern of Developed Standards of "Rules of Conduct", "Moral Training" and "School Organizations" served to meet the national demands. What is the problem with this being upheld in our educational system?
March 1, 2014

math
Mr Tan has some amount of money. If he distributes equally to 2 persons, he left with $1. If he distributes equally to 3 persons, he left with $2. If he distributes equally to 4 persons, he left with $3. If he distributes equally to 5 persons, he left with $4. If he ...
February 13, 2014

statistics, math, college
if np >5 and nq>5 estimate P (fewer than 4) with n=13 p=0.4 by using normal distribution as an approximate to the binomial distribution if np <5 or nq< then state that the normal approximation is not suitable
February 11, 2014

statistics, math, college
assume that adults have I.Q scores that are normally distributed with a mean of 100 and a standard deviation 15. find p2 which is the IQ score seperating bottom 2% from the top 98%
February 11, 2014

statistics
The assets(in billions of dollars) of the four wealthiest people in a particular country are 43,25,21,15 assume that samples of size n=2 are randomly selected
February 10, 2014

geometry
v-2/81pir2h
February 2, 2014

chemistry
What will be the average density for a sample of metal with a mass of 12.6 g and volume calculations of 7.8 mL and 8.3 cm3 ? Omit units in the answer and report answer to one decimal place.
January 22, 2014

chemistry
What will be the average density for a sample of metal with a mass of 12.6 g and volume calculations of 7.8 mL and 8.3 cm3 ? Omit units in the answer and report answer to one decimal place.
January 22, 2014

Math
A 6 ft man stands by a 30 ft tower and casts a 10 ft shadow. How long is the shadow cast by the tower and what time is it?
December 16, 2013

Math
A 6 ft man stands by a 30 ft tower and casts a 10 ft shadow. How long is the shadow cast by the tower and what time is it?
December 16, 2013

math
How many nickels and dimes does it take to make $1.95
December 10, 2013

math
370.9090900909090909909090909
December 9, 2013

Half-life
After two hours, 1/16 of the initial amount of a radioactive isotope remains undecayed. What is the half-life of the isotope?
November 18, 2013

algebra
thank you I'll check back with my teacher.
November 13, 2013

algebra
Sorry about the signs. The answer was suppose to be 2 seconds. That's what I'm not understanding. I'm coming out with what you have- I moved over the 2 and that left the t^2 = 39/2 but that doesn't come out to be two seconds which is suppose to be the answer
November 13, 2013

algebra
I'm stuck with this problem. h = -16t^2 + 312 the "t" is seconds after object released and h stands for height. We're suppose to set the equation to 0 so far this is what I have: -16t^2 + 312 = 0 -8(2t^2+39)= 0 -8=0 can be disqualified but how do I factor out...
November 13, 2013

physics
A ball is released from a hot air balloon moving downward with a velocity of -10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.
November 5, 2013

physics
A ball is released from a hot air balloon moving downward with a velocity of -10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.
November 5, 2013

physics
A ball is released from a hot air balloon moving downward with a velocity of -10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.
November 5, 2013

maths
Mr john has 350 layers, on the average, each hen lays two eggs per day.how many eggs will he expect after six days?
November 3, 2013

Statistics
356 hours
October 19, 2013

math
Everett made 3/5 of the baskets he shot. Suppose he shot 60 baskets. How many did he make?
September 17, 2013

math
There is something wrong with this definition for a pair of vertical angles: “If AB and CD intersect at point P, then APC and BPD are a pair of vertical angles.” Sketch a counterexample to show why it is not correct. Can you add a phrase to correct it?
September 15, 2013

Math
The Product of 2 consecutive odd numbers is 783. What are the numbers?
August 19, 2013

math
Steve the answer according to my book is 147
August 19, 2013

math
Assume the average height and weight of a female in your math class is 5'5" and 140 pounds. Use this information to write a variation equation then use it to find the weight of the female below if they had the same body type as the average female. Round answer to the ...
August 19, 2013

Math
If I went to the bank and fianaced $81,000 at 9% for 25 years what would my monthly principal and interest payment be?
July 17, 2013

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