Sunday
September 21, 2014

Posts by Suzy


Total # Posts: 127

Physics
A rock is dropped into a deep hole and 2.2 s later the sound of striking the bottom is heard. If the speed of sound is 340 m/s, what is the depth of the hole?
September 5, 2014

Science
how is energy produced during a nuclear fusion reaction?
June 1, 2014

Maths
Factorise to quadratics X^2+5x-14 X^2-x-90 X^2-13x+40
November 18, 2013

Maths
Ummm I actually do noe but I just wanted to make sure. Plus I've finished my work already .
November 13, 2013

Maths
I know it's 125/27 but I need it with a whole number and a fraction
November 13, 2013

Maths
(9/25)^-3/2
November 13, 2013

Trigonometry desperate help, clueless girl here
2. solve cos 2x-3sin x cos 2x=0 for the principal values to two decimal places. 3. solve tan^2 + tan x-1= 0 for the principal values to two decimal places. 4. Prove that tan^2(x) -1 + cos^2(x) = tan^2(x) sin^2 (x). 5.Prove that tan(x) sin(x) + cos(x)= sec(x) 6.Prove that tan(x...
August 16, 2013

trig help much appreciated! :))
alright, I will. Thanks
August 16, 2013

trig help much appreciated! :))
1. Find the complete exact solution of sin x = . 2. Solve cos 2x – 3sin x cos 2x = 0 for the principal value(s) to two decimal places. 3. Solve tan2 x + tan x – 1 = 0 for the principal value(s) to two decimal places. 4. Prove that tan2  – 1 + cos2  = ...
August 16, 2013

trigonometry help please :(
2) Simplify √-1-4/5-√-1 A.-1/24+19/24i B.-21/26+1/26i C.-19/24-1/24i D.-1/26-21/26i 3) How many petals do the two rose curves r = 9 cos 61θ and r = 8 sin 60θ have combined? A. 182 B. 242 C. 181 D. 131 4)What is true of the curve r = ƒ(θ) if its ...
August 16, 2013

Trigonometry
1. Which of the following statements are true? (i) r = 4 – 3 sin θ is the equation for a limaçon rotated 90°. (ii) r = 3 cos 8θ is the equation for a rose curve with 8 petals. (iii) rθ = 16 is the equation for a circle. A. (i) and (iii) B. (i) ...
August 16, 2013

Trigonometry
1. Which of the following statements are true? (i) r = 4 – 3 sin θ is the equation for a limaçon rotated 90°. (ii) r = 3 cos 8θ is the equation for a rose curve with 8 petals. (iii) rθ = 16 is the equation for a circle. A. (i) and (iii) B. (i) ...
August 16, 2013

economics
Suppose the demand and supply for milk are described by the following equations: QD = 600 - 100P; QS = -150 + 150P, where P is price in dollars, Q D is quantity demanded in millions of gallons per year, and Q S is quantity supplied in millions of gallons per year 1. Use these ...
May 10, 2013

math((PLEASE HELP!))
Thank You Very Much
May 2, 2013

math((PLEASE HELP!))
A contractor has been asked to pave 15 miles of new road. Before he can set his price, he needs to know how much the cement will cost. If the road is 45 feet wide and 9 inches thick and the cost of cement is $35 per cubic yard, what will be the cost of the cement needed for ...
May 2, 2013

Math
A contractor has been asked to pave 15 miles of new road. Before he can set his price, he needs to know how much the cement will cost. If the road is 45 feet wide and 9 inches thick and the cost of cement is $35 per cubic yard, what will be the cost of the cement needed for ...
May 2, 2013

chemistry
if burning one mole releases 1310.0 kj, then how many moles will release 227.30?
April 22, 2013

Physics
What is the minimum height you would have to place a solid ball of mass M and radius R (I=2MR^2/5) on a hill in order for the ball to make it completely around a circular loop at the bottom of the hill? The diameter of the loop is D. Assume the ball rolls without slipping.
April 3, 2013

algebra 1
one more question... the length of a rectangle is 3 times the width. the area is 108 cm squared. find the dimension of the rectangle.
April 2, 2013

algebra 1
thanks
April 2, 2013

algebra 1
is it 5 and 9?
April 2, 2013

algebra 1
The length of a rectangle is 4m more than the width. The area of the rectangle is 45 m squared. Find the length and width. Please help!
April 2, 2013

math (ms sue)
how would I factor x to the thrid + 3x squared - x -3 I got (x+3) (x squared -1) and my teacher marked me wrong.
March 27, 2013

algerba
2k squared + 4k= 10 How would I solve
March 26, 2013

history
List the mexican war battles in order, by date.
March 26, 2013

History
Find at least 5 Mexican War battles that took place in Southern California. (Southern California = the ten southern counties.)
March 25, 2013

writing
My 5th grade year was coming to a close and I, personally, was really looking forward to summer. Two months of sleeping in late and doing whatever. How would I write this...
March 18, 2013

Math
1. What two numbers can be multiplied to equal -60 and added to be -11? 2. What two numbers can be multiplied to equal -36 and added to be -16? 3. What two numbers can be multiplied to equal 10 and added to equal -7? Thanks
March 18, 2013

Math
how would I solve 3 square of 6 times square of 6? Sorry, I don't know how to make radicals. Square of means radical
March 6, 2013

Psychology - Please check my answers
1. When considering marital separation and divorce as a social problem, an effective approach might be to: __x_a. develop counseling options for couples in crisis. ____b. focus on problems with the institution of marriage itself. ____c. develop anger-management programs for ...
February 26, 2013

Psychology - Social Problems
Please check my answers. 1. When considering marital separation and divorce as a social problem, an effective approach might be to: __x_a. develop counseling options for couples in crisis. ____b. focus on problems with the institution of marriage itself. ____c. develop anger-...
February 26, 2013

math
Are my answers correct?
February 4, 2013

math
perform the following unit conversion. 296 0z= ___________ lb 18.5, 55.5, 37, 74 My Answer is 18.5 Perform the following conversion. 32kg= ______ lb 16,320,70.4,14.4 My Answer is 70.4 Some people feel that the ideal temperature for an office space is 72.0 F. What is the ...
February 4, 2013

Math/Fractions
Thank you!
February 3, 2013

Math/Fractions
1.Find the LCD and add the fractions. 1/125+4/50= 11/125, 1/1250, 1/35, 551/6250 My answer is 11/125 2.Subtract; then reduce answer to lowest terms. 5/22-1/41= 227/902,183/901,183/902,61/301 My answer is 183/902
February 3, 2013

Fractions
72, Thank you!
February 2, 2013

Fractions
Eighty people were invited to vote in the extension club's elections and 9/10 of them voted. How many people voted in the elections? 74, 73, 72, 75 My answer is 73
February 2, 2013

American Gov't
B. The text says in 1945, the US emerged as a global superpower, a giant in world trade, and the recognized leader of the noncommunist world. C. Because of the presidents constitutional authority as a chief diplomat & military commander & the special demands of foreign policy ...
January 28, 2013

American Gov't
The president's role in foreign policy increased largely because: A. Congress proved so inept in foreign affairs that the American people demanded a change. B. America became more of a world power. c. of the need to coordinate national economic policy and foreign policy, a...
January 28, 2013

Math
Suppose you have a graph of a polynomial function and you can see that the function increases without bound on both left and right ends, has 4 real zereos and has 5 turning points. Based on this information, what is the minimum degree of the polynomial?
January 27, 2013

math
father gives his son three coins totaling 55 cents for school lunch. What coins did the boy receive if one coin is not a nickel?
December 3, 2012

Physics
A top-gun pilot, practicing radar avoidance maneuvers, is flying horizontally at 1300 km/hr, just 35 m above level ground. Suddenly, the plane encounters terrain that slopes gently upwards at 5, an amount difficult to detect visually. If the pilot doesn’t correct ...
November 11, 2012

Calculus -- HELP!
If 1200 square centimeters of material is available to make a box with a square base and open top, find the largest possible volume of the box.
October 20, 2012

Calculus
Use Newton's Method to approximate the positive root of the function f(x) = (x^5) - 20 Show each iteration until successive iterations agree to six decimal places.
October 20, 2012

intermediate algebra
Y varies directly with square root of X. Y=3 when X=4. find Y when X=1
October 1, 2012

business math
Hello,I'm just confuse with this problem: Find the due dates of each of the following notes. 1.) Date of loan: October 16, 2001; Time: 120 days. My answer is February 14, 2002.. Im just wondering if my answer is correct.? Thanks.
September 26, 2012

geometry
6 centimeters i think!
September 26, 2012

math
find the shift and pick appropriate points. g(x)= -|x-1|+4
September 25, 2012

intermediate algebra
write the expression in form of a+bi (-2-3i)(1+4i)
September 25, 2012

intermediate algebra
solve an inequality and indicate the solution set, in interval notation. i need the steps that way i can study it and try to do the rest on my own. 3x+1>2andx-2<7
September 25, 2012

chemistry
how many joules of nutritional energy are in a bag of chips whose label reads 245 Cal? if 1 lb of fat is stored by the body for each 14.6X10(3) KJ of excess nutritional emergency consumed.how many bags of chips contain enough nutritional energy to result in 1lb of body fat?
September 11, 2012

science
iron and sulphur reaction
May 23, 2012

mathTonyaMath
Could you please expalin how you got this answer?
November 1, 2011

Psychology
How is our behavior affected by others?
October 23, 2011

Physics
A hovercraft of mass 77.0 kg can move on a horizontal surface, the x-y plane. A single unbalanced force acts on the hovercraft, but the size of the force is unknown. The hovercraft initially has a velocity of 6.0 m/s in the positive x direction and some time later has a ...
October 10, 2011

College Physics
The driver of a 1600 kg car, initially traveling at 10.6 m/s, applies the brakes, bringing the car to rest in a distance of 23.0 m. (a) Find the net work done on the car. (b) Find the magnitude and direction of the force that does this work. (Assume this force is constant.)
October 10, 2011

Physics
Tarzan, who weighs 899 N, swings from a vine through the jungle. How much work is done by the tension in the vine as he drops through a vertical distance of 4.45 m?
October 4, 2011

algebra 2
3x-2y+z=9 x-y+4z=10 2x+3y-z=53
September 8, 2011

math
please help me
September 7, 2011

math
1. 5+3*9/3-(-7)= 2. -12*(10-20)<100= help please!!
September 7, 2011

Algebra 8th
How do you multiply and simplify radical 2(radical 8+ radical 5)?
May 13, 2011

riddle
what starts with "ne" and is one of nine, and ends with "ne" and is eighth in line
May 11, 2011

SCIENCE HELPP
You are riding a sled across frictionless ice. It has been given an initial push and is now traveling at a constant velocity, in a straight line.Snow is falling vertically (as seen by a person standing still on the ice), and the snow is accumulating on the sled. You have three...
May 1, 2011

Science
SRRY You are riding a sled across frictionless ice. It has been given an initial push and is now traveling at a constant velocity, in a straight line.Snow is falling vertically (as seen by a person standing still on the ice), and the snow is accumulating on the sled. You have ...
May 1, 2011

Science
You are riding a sled across frictionless ice. It has been given an initial push and is now traveling at a constant velocity, in a straight line. Snow is falling vertically (as seen by a person standing still on the ice), and the snow is accumulating on the sled. You have ...
May 1, 2011

chemistry
4 Fe(s) + 3 O2(g) 2 Fe2O3(s) ΔH = -1652 kJ How much heat is released when 3.82 mol iron is reacted with excess O2?
March 13, 2011

geometry
a regular hexagon is inscribed in a circle. The radius of the circle is 18 units. What is the area of the region bounded by the inside of the circle and the outside of the hexagon. Round your answer to the nearest hundredth.
November 30, 2010

geometry
yes
November 30, 2010

geometry
obtuse triangle ABC with obtuse angle B. Point D on side AC such that angle BDC is also obtuse. Angle DAB is 2/3 of angle ABD. Angle BCD is 1/5 of angle CBD is 4 more than angle BAD. Find the measure of angle ABC.
November 30, 2010

geometry
right triangle ABC with right angle C, AC=22 and BC=6, altitude CD where D is on hypotenuse AB. What is the ratio of the area of triangle ADC to the area of triangle CDB? Write ratio as n:1 and round n to the nearest hundredth.
November 30, 2010

Math
For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f to the power of -1 times 8 divided by 5 times f times 3/8
November 28, 2010

Math
Let AB and CD be two lines intersecting at point O. Let OP be the bisector of angle AOC, OT the bisector of angle POB, and OR the bisector of angle TOD. If angle POR = 25 degrees, find angle AOC and angle AOD.
November 28, 2010

math
Let AB and CD be two lines intersecting at point O. Let OP be the bisector of ]AOC, OT the bisector of ]POB, and OR the bisector of ]TOD. If ]POR = 25, find ]AOC and ]AOD.
November 28, 2010

math
For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f−1(8/5f(3/8) 
November 28, 2010

math
For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f−1 8 5f(3/8) 
November 28, 2010

math
For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f−1  8 5f(3/8) 
November 28, 2010

math
A battalion 20 miles long advances 20 miles. During this time, a messenger on a horse travels from the rear of the battalion to the front and immediately turns around, ending up precisely at the rear of the battalion upon the completion of the 20-mile journey. How far has the ...
November 28, 2010

Finance
A company is considering a plan that has different profit results under different conditions. Assuming there is a 20% chance of a boom and 10% chance of a recession, compute the expected value of their plan. Condition Result Boom $2,000,000 Profit Average $800,000 Profit ...
November 15, 2010

economics
A company is considering a plan that has different profit results under different conditions. Assuming there is a 20% chance of a boom and 10% chance of a recession, compute the expected value of their plan. Condition Result Boom $2,000,000 Profit Average $800,000 Profit ...
November 15, 2010

english
for classification what word goes with know,think?
October 18, 2010

calculus
Find the derivative of the functions: 1) f(x)=x(1-(2)/(x+1)) 2) f(s)=(s^2-2s+5)/(x^(1/2))
September 23, 2010

Economics
never mind its d
June 8, 2010

Economics
so is it b for # 5?
June 8, 2010

Economics
2) d 3)a 4)b 5)c 6)a
June 8, 2010

Economics
1) Which of the following is an example of a measure of labor productivity? a. Autos get 30 gallons to the mile. b. The growth rate of per capita real GDP is 3.5 percent per year. c. Farm workers produce 30 bushels of wheat per worker per day. d. Wages increase by 3.5 percent ...
June 8, 2010

math
3:4 228:x x=304 304+228=532
April 23, 2010

5th grade
is a word or phrase - "thus," "therefore" - that shows that a conclusion is up ahead
March 13, 2010

computers
. When you link a worksheet and a chart in a business report as well as on a slide, which Microsoft Office applications are integrated? A. Word, Excel, PowerPoint B. Excel, Access, Word C. Word, Access, PowerPoint D. Excel, PowerPoint, Publisher 2. Which one of the following ...
October 24, 2009

Physical Science
What type of simple machine would you use if the trees have lost their leaves and you have a lot of them to collect?
October 11, 2009

12th grade
it's C
February 20, 2009

Physics
thank you. :)
November 24, 2008

Physics
One application of the index of refraction is analysis of crime scenes. Using the index of refraction, forensic scientists can determine what type of glass has been left at a scene. Read the following and answer the questions below. Different types of glass (bottle, window, ...
November 24, 2008

Physics
A passenger bus in Zurich, Switzerland derived its motive power from the energy stored in a large flywheel. The wheel was brought up to speed periodically, when the bus stopped at a station, by an electric motor, which could then be attached to the electric power lines. The ...
November 4, 2008

science
1. A violin string is oscillating at a frequency of 880 Hz (1 Hz = 1 full cycle / second) in its 2nd harmonic. What wold be the frequency of the fundamental vibrational mode? 2. Describe how you would go about finding the frequency of an unmarked tuning fork using the ...
July 31, 2008

Reseach paper
thank you everyone for the help. I've been researching on the computer for months with no luck. i will look at the sites u recommended. i thought i was taking medical billing not a writing class....
June 21, 2008

Algebra
I am confused about how to graph two numbers on the same line. I need to graph: x</+ -2 x>/+ -4 both on the same line I have: -6 -5 [-4 -3 -2] -1 0 1 2 solid line I am not sure if I have the right [ or if I need a ( and if I need a solid line.
March 22, 2008

Chemistry
Do I have this right? Which one of these is the solute and which one is the solvent in a solution composed of a.) 25.0 g. of silver in 5.0 g. of mercury, and b.) 3.0 g. of iodine (I2) in 100.0 mL of ethanol? a.) Mercury is the solute and silver is the solvent. b.) Iodine is ...
February 8, 2008

Dr. Bob
Phenanthroline (C12H8N2) was added to the colorless prepared solution and a phenanthroline-iron (II) complex was formed. The absorbance of the resulting colored solution was measured on the spectrophotometer and the percent iron was read from a graph that had been prepared ...
November 19, 2007

Dr. Bob
Okay now can you read my introduction for me please... INTRODUCTION: This report discusses an experiment to study the percent mass of iron determined by the concentration of a colored iron solution from the absorbance of the spectrometer. This lab is designed to determine the ...
November 19, 2007

Dr. Bob
Dr. Bob can you help me get a concluding sentence to my discussion please
November 18, 2007

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