Questions Asked on
March 27, 2013

fgcu
More than a decade ago, high levels of lead in the blood put 88% of children at risk. A concerted effort was made to remove lead from the environment. Now, suppose only 12% of children in the United States are at risk of high bloodlead levels. (a) In a
asked by alexis 
physics
We are given an input current Iin=100μA and a linear resistive load represented by the resistor RL . Our resistive load is not regulated for the high current provided by our current source, so we add a resistor RS in parallel to divide the current such
asked by Anonymous 
chemistry
write the ionic equation and the balanced netionic equation for the following equations: Al2O3(s) + 6 HCl(aq) = 2 AlCl3(aq) + 3 H2O(l) And H2SO3(aq) + 2 KOH(aq) = K2SO3(aq) + 2 H2O and 2 HC2H3O2(aq) + Ca(OH)2(aq) = Ca(C2H3O2)2(aq) + 2 H2O and the final
asked by Emaan 
Physics
Kelly is driving a car with a mass of 800 kilograms in a south direction with a speed of 18 meters/second. Dominic is driving a truck with a mass of 1500 kilograms with a velocity of 15 meters/second to the east. They undergo perfectly inelastic collision.
asked by Fredrick 
Centroids and Triangles  determining perimeter?
Let G denote the centroid of triangle ABC. If triangle ABG is equilateral with side length 2, then determine the perimeter of triangle ABC. I drew the diagram, but it doesn't really help....
asked by Knights 
Microbiology
You need to make 20ml of a 20% glucose solution. The M.W. of glucose is 180.16. How would you accomplish this: Glucose _______g Pure Water _______ml
asked by John 
I would like to understand my calc homework:/
Consider the differential equation given by dy/dx=(xy)/(2) A) sketch a slope field (I already did this) B) let f be the function that satisfies the given fifferential equation for the tangent line to the curve y=f(x) through the point (1,1). Then use your
asked by Amber 
Chemistry
1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical
asked by Jose 
Form a polynomial f(x)
Form a polynomial f(x) with real coefficients having the given degree and zeros. Degree 5; Zeros: 3; i; 6+i F(x)=a ( )
asked by Hailey 
Algebra
Find the smallest positive integer N \neq 23 such that the fraction \frac {N23} { 7N+6 } is not in simplest terms.
asked by Anonymous 
Chem
Calculate the work (in kJ) when 1.80 moles of methane react with excess oxygen at 389 K: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) I got 11661.26 Calculate the change in entropy (in J/K) when 70.1 g of nitrogen gas is heated at a constant pressure of 1.50 atm
asked by Anonymous 
Math Olympiad
Lara starts at the bottom of a long staircase. She climbs exactly 2/3 of the stairs. Then, she goes back down exactly 1/2 of the way to the bottom. From that spot, she climbs exactly 2/3 of the way to the top. Finally from there, she climbs 6 stairs to
asked by Usher 
Microbiology
You need 3.5L of 50mM NaCl from your 20X stock. How would you accomplish this: 20X stock __________ml Pure Water ___________ml From whatever number I plugged in trying to solve it, I got: 175ml of 20X stock and 3,430ml of Pure Water. Have no idea if those
asked by John 
Chemistry
You prepare a solution from 10.0 mL of 0.100 M MOPS buffer (3morpholinopropane1sulfonic acid) and 10.0 mL of 0.071 M NaOH. Next, you add 1.00 mL of 1.89 × 105 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine
asked by Jessica 
Englisj
1. Which of the following is NOT an example of persuasive writing? a position paper from an elected official a college admissions essay a movie review *a summary of a textbook reading assessment 2. Identify the following as a fact or an opinion: “Video
asked by Jack 
physics
While a roofer is working on a roof that slants at 45.0 degrees above the horizontal, he accidentally nudges his 94.0 N toolbox, causing it to start sliding downward, starting from rest.
asked by Anonymous 
algebra
The perimeter of a basketball court is 114 meter and the lenght is 6 meter longer than twice the width. What are the lenght and Width. i need help please i am stuck
asked by luz 
Chemistry
1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical
asked by Jack 
Social Studies Ms. Sue please
Sorry there are so many questions!!!! 1. The economic centers of the Northeast are the region's __________. (1 point) farms fisheries forests cities 2. Two major ports in the South are ______________________. (1 point) Atlanta and Dalton Raleigh and Austin
asked by Delilah 
physics
An archer puts a 0.26 kg arrow to the bowstring. An average force of 184.5 N is exerted to draw the string back 1.26 m. The acceleration of gravity is 9.8 m/s 2 . Assuming no frictional loss, with what speed does the arrow leave the bow? Answer in units of
asked by Anonymous 
math
An open box is made from a rectangular piece of cardboard measuring 16 cm by 10cm. Four equal squares are to be cut from each corner and flaps folded up. Find the length of the side of the square which makes the volume of the box as large as possible. Find
asked by annie 
physics
A boy is pushing his sled up a snowy slope. The sled has a mass of 20.4 kg and weighs 200 N. The boy pushes with a constant force of 75 N. The sled travels a distance of 10 m and gains 3 m in height. When the sled reaches the top, it is traveling 2 m/s.
asked by bill 
Algebra
You put $1700 into an account at 8% per year compounded continuously. a) How long will it be until you have $2000? b) What is the doubling time for this money?
asked by Meg 
Cal
lim_(x>0^+)(tan(9x))^x
asked by Dee 
Ellipses
Given an ellipse; 4x^2+y^248x4y+48=0, find the Center, find the Major Axis, find the Minor Axis & the Distance from C to Foci?
asked by Amber 
calculus
Calculate the equation of the tangent and normal lines for the curve f(x) = tan 2x, at the point where the xcoordinate is: x = π/8.
asked by Bonaventutre 
Math
a 55 kg skateboarder on a 3 kg board starts coasting on level ground at 8 m/sec. Let k=3.2 kg/sec. About how far will the skater coast before reaching a complete stop?
asked by Jeremy 
percent
sammy bought a pair of shoes with 30% off sale price was 58.45 what was the regular price
asked by luz 
Science ASAP please
1. Which of these sources of energy is NOT renewable? (1 point) wind solar power hydroelectric power natural gas 2. Air can be polluted by ____. (1 point) tiny particles of soot carbon monoxide sulfuric acid all of the above 3. Which of the following can
asked by Delilah 
Math
Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir
asked by Unknown 
Chemistry
What is the molecular equation for HCl(aq) + NH4OH(aq)?
asked by Virginia 
7th Grade Social Studies
1. Which statement best describes the government of Canada? (1 point) The monarch of Britain has total control over Canada. The Canadian parliament is ruled by the United States. Canada has complete power over its own government. The prime minister is the
asked by Anonymous 
Math
For questions 4–5, use the following two ways to display the test scores received on Mr. Alexander's math test. Use these displays to solve each problem. Stem  Leaf 6  8 9 7  0 3 5 8 9 8  1 2 2 5 7 8 8 9 9  0 2 3 Pie Chart: 8089= 44.4% 9099=16.6%
asked by SpiersTheAmazingHd 
Physics (Electricity & Magnetism))
Two positive point charges are placed on the xaxis. One, of magnitude 4Q, is placed at the origin. The other, of magnitude Q is placed at x=3 m. Neither charge is able to move. Where on the xaxis in meters can I place a third positive point charge such
asked by Gurudev 
Bus Math
i need to earn 61000 over 5 years. at 6% interest semiannually what is my first deposit?
asked by V 
chemistry
Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the equilibrium equation: CO2(g) CO2 (aq) K=0.032 The acid dissociation constants listed in most standard reference texts for carbonic acid
asked by jane 
Calculus
Calculate the area of the common interior of r = 2sin(theta) and r = 2cos(theta)
asked by Jess 
math
Karina drew a shape with 2 pairs of parallel sides and no right angles. Which shape could Karina have drawn? A. square B. rhombus C. rectangle D. trapeziod
asked by sarah 
ms. sue plz help
2. Read the following excerpt from “All Together Now”: What can parents do? We can put our faith in young people as a positive force. I have yet to find a racist baby. Babies come into the world as blank as slates and, with their beautiful innocence,
asked by SpiersTheAmazingHd 
math
Write an inequality that represents the statement: x is less than 4 and greater than 1
asked by mary 
analyze the graph of the function
analyze the graph of the function R(x)=x^212/x6 a) What is the domain of R(x)? b) What is the equation of the vertical asymptotes of R(x)? c) What is the equation of the horizontal or oblique asymptote of R(x)?
asked by Alley 
Chemistry
A cat is about 10.0% Carbon. My cat weighs about two kilograms. How many moles of Carbon are in my cat?
asked by Kristen 
Chemistry
If Gold sells for $1200.00 an ounce, how many atoms of gold can you buy for a penny? Please, Show work.
asked by Kristen 
Geometry
ABCD is a trapezoid with AB < CD and AB parallel to CD. \Gamma is a circle inscribed in ABCD, such that \Gamma is tangent to all four sides. If AD = BC = 25 and the area of ABCD is 600, what is the radius of \Gamma?
asked by Jason 
Geometry
The vertices of a regular 10gon are labeled V_1, V_2, \ldots V_n, which is a permutation of \{ 1, 2, \ldots, 10\}. Define a neighboring sum to be the sum of 3 consecutive vertices V_i, V_{i+1} and V_{i+2} [where V_{11}=V_1, V_{12}=V_2]. For each
asked by Jason 
Physics
Two positive point charges are placed on the xaxis. One, of magnitude 4Q, is placed at the origin. The other, of magnitude Q is placed at x=3 m. Neither charge is able to move. Where on the xaxis in meters can I place a third positive point charge such
asked by Steve 
Math
Harry drove for 6 hours on the freeway, then decreased his speed by 20 miles per hour and drove for 5 more hours on a country road. If his total trip was 648 miles, then what was his speed on the freeway?
asked by Sheree 
Pre calculus
How do I solve this exponent problem? I understand the exponent rules, but I getting 1 but 1 is not the answer! I don't want anyone to solve the problem for me, I want to learn how to solve this type of problem. Thank you! Solve the equation: 8=36
asked by anon 
Unknow
A man has a rectangular garden. One length of the garden lies along a patio wall. However the rest of the garden is enclosed by 32 feet of fencing. If the length of the garden is twice its width, what is the area of the garden.
asked by Lee 
Algebra
As x ranges over all real values, what is the minimum value of f(x)=x123+x456 + x789 ?
asked by Steven 
Chem
Calculate [H3O ], [ClO4–], and [OH–] in an aqueous solution that is 0.170 M in HClO4(aq) at 25 °C.
asked by Chris 
MATH
IF CATHY IS 24 YEARS OLD, HOW OLD WILL CATHY BE IN Y YEARS? Y  24 Y + 24 24  y 24 / Y
asked by ANDY 
PHYSICS PLEASE HELP ASAP
When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried
asked by Laila 
college algebra
Solve the equation. How do you solve a fraction? X^2/3=1/16 Thanks
asked by Anonymous 
Science
A plane is flying 500mph east.The wind is blowing 50mph west.What is the netforce.Please help i need this question awensered by March 2013,31.
asked by Cassidy 
Physics
Two positive point charges are placed on the xaxis. One, of magnitude 4Q, is placed at the origin. The other, of magnitude Q is placed at x=3 m. Neither charge is able to move. Where on the xaxis in meters can I place a third positive point charge such
asked by Anonymous 
math
U.S. cement export date for the last 10 years in thousand tons: 746, 625, 633, 759, 803, 791, 743, 694, 738, 834 Find the mean number of tons exported for the period. I don't understand how to set this up.
asked by tmouery 
math
use the rational zero theorem to find all the real zeros of the polynomial function. use the zeros to factor f over the real numbers: f(x)=4x^4+9x^3+30x^2+63x+14 I cant even find sample problems to help me figure this out. help me please?
asked by courtney 
CHEMistry
A 2.50g sample of powdered zinc is added to 100.0 mL of a 2.00M aqueous solution of hydrobromic acid in a calorimeter. The total heat capacity of the calorimeter and solution is 448 J/K. The observed increase in temperature is 21.1 K at a constant
asked by HELP 
Algebra
You put $1700 into an account at 8% per year compounded continuously. a) How long will it be until you have $2000? b) What is the doubling time for this money?
asked by Meg 
Chemistry
When a 5.00g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 3.978 kJ·K–1, the temperature decreases by 0.290 K. Calculate the molar heat of solution of KCl.
asked by Lyndz 
English
From reading "Birches," we can conclude that the speaker is a(n): A: Boy B: Birch tree C: old man D: girl on her hands and knees Answer : A ? "Song" makes extensive use of : A: assonance B: personification C: rhyme D: onomatopoeia Answer: C "The creation"
asked by Ciara 
Chemistry
If the heat of combustion for a specific compound is 1010.0 kJ/mol and its molar mass is 46.03 g/mol, how many grams of this compound must you burn to release 388.00 kJ of heat?
asked by Anonymous 
Chemistry
a chemist carries out the reaction of 0.250 mol of f2 with excess of cl2. At 250 degress C and 1.00 atm, what is the maximum volume of CLF3 in liters that the reaction can produce?
asked by Emilee 
English
In "Creation," the poet says that god is like: A: a living man B: the darkness and the light C: a mother bending over her child D: some creature made of clay Answer : A In the Odyssey, the cyclops is compared to a shaggy mountain to emphasize his: A:
asked by Ciara 
math
use the given zero to find the remaining zeros of the function: F9x)=x^35x^2+4x20; zero:2i I don't get it. Can someone please show me what to do with this?
asked by aria 
Math
Algae is 5 yrs younger than berenice. Tomas is 7 yrs older than berenice. The sum of ages of the three togather is 83' , how old is each? So i did berenice : x Algae: x5 Tomas: x+7 x+(x5) + x+7 = 83 buthow old is each??
asked by Jim 
college algebra
P=t^235t+300 the profit made when t units are sold t>0, is given by P=t^235t+300. Determine the number units to be sold in order for P
asked by Anonymous 
Grammar (Ms. Sue)
The following sentences are written in the present tense. Rewrite each sentence in each of the other five tenses. 1). I collect. 2). You split. 3). They teach. 4). We give. 5). It remains. My answers: 1). Past: I collected Vanessa from her Seminary class.
asked by Anonymous 
maths
Find the sum of all positive integers b such that b^2 =a^3 +1 , where a is a prime number
asked by John 
math
solve the following exponential equation:show your work. e^xe^x/2=7 1. write exact answer. 2.write answer approximated to 3 decimal places. whaaaat? smh I don't get it at all.
asked by ayonna 
math
factor completely. if the polynomial is prime, state this? 5b66 + b^2
asked by luz 
math
determine whether the following is a difference of squares? 4x^2 + 4y^2
asked by luz 
ellipses
Given an ellipse; 3x^2+5y^212x50y+62=0, find the Center, Major Axis, Minor Axis, & the distance from C to Foci?
asked by Amber 
MATH HELP!!!!!
TOMMY WANTS TO HELP KATHY BRING APPLES TO HER GRANDMOTHER'S HOUSE. TOMMY HAS A BUCKET OF 5 APPLES. HE GAVE KATHY 2 APPLES TO PUT IN HER BUCKET. CALCULATE THE SUN'S MASS.
asked by SANDRA GOMEZ 
sociology
In what way were Karl Marx and Charles Wright Mills alike in their thinking and understanding of society?
asked by christian 
Genetics
βthalassemia is a human genetic disease that is inherited in an autosomal recessive manner. Individuals with βthalassemia produce abnormal hemoglobin which results in a reduced ability to carry oxygen in their blood. The severity of symptoms depends on
asked by qwerty 
English :)
Odysseus alone will listen o the Serens song because he : A: wants to tell his men what they sing. B: is following Cicle's advice. C: wishes to be the only one to enjoy the Sirens' song. D: doesn't want to offend the Sirens. Answer is C ?
asked by Ciara 
ellipses
Given an ellipse; 3x^2+5y^212x50y+62=0, find the Center, the Major Axis, the Minor Axis, & the distance from C to Foci?
asked by Amber 
college algebra
√3x+7=3x+5 How do I solve when the answer is 1?
asked by Anonymous 
Chemistry
A student was synthesizing aspirin in the lab. Using the amount of limiting reactant, she calculated the mass of aspirin that should form as 5.24g. When she weighed her aspirin product on the balance, it mass was 2.23g. What is the percent yield of the
asked by Dion 
Ellipses
Given an ellipse; 8x^2+y^2+80x6y+193=0, find center, major axis, minor axis, & distance from c to foci?
asked by Amber 
Math
Order fractions 3/6 5/6 4/10 from greatest to least
asked by Anonymous 
maths
What is the sum of all integer values of n satisfying 1≤n≤100, such that n2−1 is a product of exactly two distinct prime numbers?
asked by number theory 
ellipses
given an ellipse; 2x^2+6y^2+32x48y+212=0, find center, major axis, minor axis & distance from c to foci?
asked by Amber 
Math
Hi i'm having trouble with a question. it states During the Summer you take 2 part time jobs. The first job pays $5 per hour. The 2nd Job pays $8 per hour. You want to earn at least $150 a week and work 25 hours or less a week. Write a system of
asked by Alex 
math
The function f(x)=2x+8/3x7 is one to one. Find its inverse, and check your answer. f^1(x)= I haven't one clue how to do this...help me pleaaaase someone!
asked by lilly 
social studies
Identify two problems resulting from urban sprawl in the western region of the United States. If these problems are not solved, what will the outcome likely be?
asked by Camryn 
maths
When buying Brilliant Tshirts, Bradan determines that the total cost of buying N shirts is given by the function C(N)=0.04N2−36N+9000 If he wants to minimize the total cost of buying shirts, how many shirts should he buy?
asked by number theory 
statistics
Do these sample FICO scores appear to be consistent with the reported mean? 714 751 664 789 818 779 698 836 753 834 693 802
asked by Anonymous 
calculus
The volume of the 3dimensional structure formed by rotating the circle x^2 +(y−5)^2 =1 around the xaxis can be expressed as V=að^2 . What is the value of a
asked by John 
calculus
The volume of the 3dimensional structure formed by rotating the circle x^2 +(y−5)^2 =1 around the xaxis can be expressed as V=a*pi^2 . What is the value of a
asked by John 
Math
If f(x)lnx,g(x)=e^8x, and h(x)=x^7, find the following: a. (f.g)(x). what is the domain of f.g? b.(g.f)(x). what is the domain of g.f? c. (f.h)(x). what is the domain of f.h? I have no clue how to do this. Somebody please help me?? please???
asked by Trina 
Physics
An 80 kg man is riding in an elevator from the first floor to the 34th floor. The elevator and man are moving at a constant speed. What is the net force on the man in Newtons (g=9.8)
asked by John 
English!
While a heroic epic focuses on the expolits of a single hero, an epic is a long poem that : A: focuses on the exploits of a heroine B: tells tales only about gods and goddesses C: explains how certain events and objects in nature came to be D: describe the
asked by Ciara 
Social Studies
PLEASE ANSWER! PLEASE ANSWER! PLEASE ANSWER! Identify two problems resulting from urban sprawl in the western region of the United States. If these problems are not solved, what will the outcome likely be?
asked by Jessica 
Alg I
12r^2 + ____ + 6 How do I solve this ax^2 + bx + c problem. Please explain in detail. I simply do not get it. Thanks.
asked by Jane 
physics
The curved artery can be approximated as a semicircular arch whose diameter is 4.9 cm. If blood flows through the aortic arch at a speed of 0.35 m/s, what is the magnitude (in m/s2) of the blood's centripetal acceleration?
asked by Billy 
pre calculus
for the given function f and g, find the specified value of the function. State the domain: f(x)=2x5; g(x)=7x9 a. (fg)(x)= b.(f/g)(x)= I need help!
asked by laila 
math
for the given functions f and g, find the specified value of the following functions and state their domains: f(x)=x5; g(x)=2x^2 a.(f+g)(3)= b.(f/g)(3)= Can someone help me figure this out? pleeeease????
asked by asia 
pre calculus
consider the functions f(x)=x^33 and g(x)=3 sqrt x+3: a. find f(g(x)) b. find g(f(x)) c. determine whether the functions f and g are inverses of each other. I really need help with these, I don't get it at all.
asked by Staci 
precalculus
partial fraction; use the rational roots theorem to factor denominator. x^3 + 2  x^4 +8x^2 +16 i got to that and im stuck Ax+B + Cx+D   x^2 +4 x^2 + 4
asked by jinie 
pre calculus
find the average rate of change of f(x)=x^35x+3: a. from 6 to 3 b. from 1 to 2 c. from 2 to 8 I am so lost, can someone please show me how to do this?
asked by courtney 
statistics
Based on these reults, is a FICO score of 500 unusual? Why or why not?
asked by Anonymous 
math
A parallelogram has an area of 8x^2  2x 45. The height of the parallelogram is 4x + 9. I know the formula for a parallelogram is A=bh. Please work and explain how I get the length of the base of the parallelogram. Thanks
asked by Jane 
physics
A 0.405 soccer ball is initially moving at 2.05. A soccer player kicks the ball, exerting a constant 40.5 force in the same direction as the ball's motion.
asked by Anonymous 
Social Studies
PLEASE ANSWER! PLEASE ANSWER! PLEASE ANSWER! 1) Identify two problems resulting from urban sprawl in the western region of the United States. If these problems are not solved, what will the outcome likely be? 2) Why do you think the Canadian government is
asked by Jessica 
math
A Triangle has sides 4,8,and 11. In a similar triangle the shortest side is 8 and the longest side is x. a) Write a proportion that models the situation. b) Solve the proportion for x.
asked by Felicia 
HELP WITH MATH PLEASE!!!!!!!!!!
What does 1/2 x 2 x 6 = ?
asked by Bella 
economics
Keogh and Ira plans allow people to do sll the following except
asked by Anonymous 
Physics
The pressure increases by 1.0 x 104 N/m2 for every meter of depth beneath the surface of the ocean. At what depth does the volume of a Pyrex (bulk modulus 2.6 x 1010 N/m2) glass cube, 2.9 x 102 m on an edge at the ocean's surface, decrease by 9.5 x 1010
asked by Anonymous 
Math
Convert 2xy>2 to slope intercept form.
asked by manny 
PHYSICS PLEASE SOMEONE HELP ME OUT
When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried
asked by Laila 
Algebra
A rectangle is 5 times longer then it is wide. If perimeter of the rectangle is 222m. What are its dimensions
asked by Phil 
HELP!!!!
Is there any good colleges in NEW YORK for COUNSELING PSYCHOLOGY????
asked by Rose 
Math
6a(3a2) + 12b(3a2) Is it correct if i multiplied 6a by 3a then 6a by 2 and so on?
asked by Ariel 
healthcare management
How to develop a strategic plan for a skilled nursing facility
asked by katnttown 
reading
Has anyone ever read the book tiger rising?
asked by leslie 
Math
Factorize the following expressions: 1) 6a(3a2)+12b(3a2) I got : (3a2)(6a+12b) But its not simplified, how do i simplify it
asked by Ariel 
ap chemistry
WHERE CAN I TAKE AP CHEMISTRY ONLINE DIAGNOSTIC TEST?
asked by maria 
Chemistry
balance Single replacement reactions and name of the products. 1. Zn+Cu3(PO4)2= 2. Na+F2O3= 3. Li+HNO3=
asked by Jane 
Algebra
Please solve as polynomial to third degree: the product of three consecutive odd numbers is 6,783. What are the numbers? The solution being 17, 19, and 21, what are those numbers when considering: x*(x+2)*(x+4)=6,783? Multiplied out: x^3+6*x^2+8*x6,783=0
asked by Wayne 
Algebra help
I need to solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give the soloution in terms of a parameter. 3x+yz=4 6x2y+2z=8 12x+4y4z=16
asked by Kristen 
Math
(a+4)(2x3)+(a+4)(3x+1)
asked by Ariel 
math
What percentage of the total students chose skateboarding? (1 point) 10% 20% 30% none of these if 2 bys and 1 girl chose skateboarding? What percentage of the boys chose walking? (1 point) 30% 45% 25% none of these
asked by Terry 
french
I need to complete activity 11 noms et prenoms with the verb appeler, it's French 3 in the la routine quotidienne packet?
asked by Ashley 
GEOMETRY
The squares of a 3×3 grid of unit squares are coloured randomly and independently so that each square gets one of 5 colours. Three points are then chosen uniformly at random from inside the grid. The probability that these points all have the same colours
asked by Anonymous 
Math
(2x+1)(x5)(4x+2)(3x+7)+(1+2x)
asked by Ariel 
ALGEBRA 2...
*Please explain on how to do each of these! 1. Let (x) be defined for all positive integer values of x as the product of all even factors of 4x. For example, (3)=12x6x4x2=576. What is the value of (5)? Someone says that it is f(5)= 20x10x2x4=1600 I DO NOT
asked by Anonymous 
Math
(x5)^2  3(4x)(5x)
asked by Jim 
History
In what three ways does the Constitution divide power?
asked by Thomas 
Calculus
Find constants a and b in the function f(x)=axe^(bx)such that f(1/7)=1 and the function has a local maximum at x=1/7. a = b =
asked by Angelica 
math
the sum of five consecutive numbers is 28 more than the sum of the third and the fifth numbers.find the consecutive numbers
asked by Anonymous 
Physics
Attempting to stop on a slippery road, a car moving at 90 km/h skids across the road at a 30 angle to its initial motion, coming to a stop in 3.8s. Determine the average acceleration in m/s^2, using a coordinate system with the xaxis in the direction of
asked by James Baker 
Agebra
(square root of x10)  3x = 1
asked by Cedric 
Chemistry
A horizontal piston contains 34kg of water that is saturated at 36ºC. Heat is transferred to the water until 80% of the water vaporizes If the piston moves very slowly, calculate the work done by surroundings on the system during this process.
asked by Anonymous 
Physics
Airplanes are noisy things. For example, if you stand really close to a runway, a military jet can produce a sound intensity of about 100 W/m^2 at a distance of 30 m from the plane (this is beyond painful noise). You live near a military airport and want
asked by Gurudev 
Chemistry titrations
25.00mL of an unknown sulfuric acid solution is titrated to the second equivalence point with 21.02mL of 0.420M potassium hydroxide solution. What is the concentration of the sulfuric acid solution?
asked by Jaden 
Physics
A 85kg snow skier is being pulled up a 17 ° slope by a steel (Young's modulus 2.0 x 1011 N/m2) cable. The cable has a crosssection area of 7.4 x 105 m2. The cable applies a force to the skier, and, in doing so, the cable stretches by 2.6 x 104 m. A
asked by Anon 
Physics
Two parallel wires carry 1A currents in unknown directions. The distance between the wires is 10cm. What is the magnitude of the magnetic field B in Teslas at a point P located 6cm away from the axis of one of the wires and 8cm away from the axis of
asked by Gurudev 
Chemistry eq
How many milliliters of 0.430M hydrochloric acid (HCl(aq)) must be added to 15.00mL of 0.682M sodium hydroxide (NaOH(aq)) to reach the equivalence point?
asked by Jaden 
Chemistry eq
How many milliliters of 0.430M hydrochloric acid (HCl(aq)) must be added to 15.00mL of 0.682M sodium hydroxide (NaOH(aq)) to reach the equivalence point?
asked by Jaden 
math
a cleaner charges $0.50 per square foot to polish wood floors. a school hall has a floor area of 30 feet by 50 feet. what would be the total cost to polish the floor of the school hall? A. $80 B. $375 C $750 D $1,500 I think it is C.
asked by jenny 
Biology (dilutions)
This is the homework exercise: You want to add 0.13 ul of DNA to 4.87 ul of extraction mix to have a final total of 5.0 ul of sample. But you don't want to make 0.13 aliquots because it is too small. Make a dilution to accomodate for the small aliquot. Any
asked by Remy 
Physics
The caber toss is a traditional Scottish sport that involves hurling a caber, which is essentially a large piece of a tree: a caber is a 6 m long, 80 kg tree trunk. Large strong people hurl these and the goal is to get the caber to land as far away as
asked by Gurudev 
Algebra help!
Please help and I would appreciate an explanation as to how you got to the answer. 1.) Solve the system by triangularizing the augmented matrix and using back substitution. 0.09x0.15y+0.39 0.18x+0.35y=0.88 2.) Solve the system by triangularizing the
asked by Kristen 
Algebra
(square root of x)+(square root of x5) = 1
asked by Cedric 
chem
consider the system I2(g)+262 KJ ¡ê 2 I (g) at 1000¡ÆC. In which direction, if any, will the reaction proceed if gaseous iodine atoms are added, the system is compressed, the temperature is decreased, a catalyst is introduced, and gaseous idodine atoms
asked by lisa 
chemistry
If material is lost from the crucible by spattering, what effect would this have on the mass of Sodium Chloride?decrease or increase
asked by gersham 
Algebra
I have a few questions I need help with! 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give the solution in terms of a parameter. 3x+yz=4 6x2y+2z=8 12x+4y4z=16 2. Solve
asked by Kristen 
algebra
Find the sum of all positive integers c such that for some prime a and a positive integer b, a^b+b^a=c^a.
asked by Anonymous 
cjustice 200
Should judicial review be eliminated? Provide a detailed explanation for your answer. b) If judicial review were eliminated, what alternative means could be used to interpret the meaning of the Constitution?
asked by heather 
College Algebra
Use the rational zeros theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers. f(x)=2x^3x^2+2x1
asked by Chama 
Science
How is playing on a seasaw an example of the scientific definition of work
asked by Sam 
Physics Oasis!! Help!!
A fully loaded Cessna182 airplane of mass 1250 kg has an engine failure when flying with an airspeed of 129 km/h at an altitude of 2670 m on a calm day. It then glides at a constant glide angle (which is the direction of flight below the horizontal)
asked by boom 
History
What the positive and negative results of Spanish Exploration in California.
asked by Isabella 
statistics
suppose we went to test the claim that the average GPA of all students in this university is at least 2.8. however , from out class with 25 students, we find the average GPA is only 2.7 with standard deviation 0.35. can we reject the claim with
asked by Anonymous 
accounting
how to The beginning inventory of merchandise at Francesca Co. and data on purchases and sales for a threemonth period are as follows:
asked by martha 
geometry
The scale factor is 5/4. Find the area of the preimage if the area of the image is 150 in2.Show your work.
asked by bre 
math
The point (5, 7) is dilated by a scale factor of 4 about the origin. Find the location of the new point. Show your work.
asked by bre 
math
Students are baking muffins to sell to raise money. They bake muffins in trays of 24 muffins each. They want to divide the muffins on each tray into equal packets. Which packet size would result in muffins from each tray being left over? A.3 muffins per
asked by sally 
algebra
Two points are chosen uniformly at random on the unit circle and joined to make a chord C1. This process is repeated 3 more times to get chords C2,C3,C4. The probability that no pair of chords intersect can be expressed as a/b where a and b are coprime
asked by Anonymous 
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.
asked by Suzy 
English
Q: What is the restroom at school called? Is it the boys' room or the girls' room? Is it the staff's room for teachers?
asked by rfvv 
chemistry
H2 + CO2 H2O + CO if there were something that were added to this system to absorb the CO2, where would the equilibrium shift? Please don't just give the answer, explain as well, thanks :)
asked by K 
PHYSICS PLEASE HELP ASAP
When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried
asked by Laila 
Socials, one definition
a place in which liquid collects is called what? its 4 letters so my answer is site. is is correct?
asked by Bruno 
college algebra
Rational equation 5/x3  3/x+3=2/x^29 how do I solve?
asked by Anonymous 
Chemistry
If you dilute 12.5 mL of a 3.5 M solution to make 213.8 mL of solution, what is the molarity of the dilute solution?
asked by Dylan 
Alg I
Find a pair of factors for each number by using the difference of two squares. 84 55 80 Please explain. Thanks
asked by Jane 
statistics
The scatter diagram of midterm scores and final scores in a large class is football shaped. For about 80% of the students, the regression estimate of final score based on midterm score is correct to within 15 points. For about 95% of the students, the
asked by Anonymous 
Science due tmrw
Which simple machine does not change the direction of a force?
asked by Dani 
Chemistry
A swimming pool, 20.0 m 12.5 m, is filled with water to a depth of 3.73 m. If the initial temperature of the water is 18.5°C, how much heat must be added to the water to raise its temperature to 28.5°C? Assume that the density of water is 1.000 g/mL.
asked by Chuck 
Biology
This is the homework exercise: You want to add 0.13 ul of DNA to 4.87 ul of extraction mix to have a final total of 5.0 ul of sample. But you don't want to make 0.13 aliquots because it is too small. Make a dilution to accomodate for the small aliquot. Any
asked by RM 
science
how do ear defneders work
asked by lol 
Physics Please COULD SOMEONE HELP ME ASAP PLZ
When an object is placed 55.0cm from a certain converging lens, it forms a real image. When the object is moved to 45.0cm from the lens, the image moves 6.00 cm farther from the lens. Find the focal length of this lens? Please someone help me out I tried
asked by Laila 
Socials, 3 definitions
land being covered with thick moving ice is called what? northern or of the arctic/6 letters? a level bog or swamp found in canada/6 letters?
asked by Bruno 
social studies
Can't unscramble 3 middle eastern names...ihaaBm, Bpsouors, hrpuitReE esavr
asked by jen 
Maths
The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as a/b where a and b are coprime positive integers. Find a + b.
asked by John 
Math
Fence needs to be built for 6 children with 75 sq feet for each child. What would length and width be for fence in feet?
asked by Penny 
Life orientation
What is basic conditions of employment act
asked by Anonymous 
Algebra 2.....
*Please explain on how to do each of these! 1. Let (x) be defined for all positive integer values of x as the product of all even factors of 4x. For example, (3)=12x6x4x2=576. What is the value of (5)? Someone says that it is f(5)= 20x10x2x4=1600 I DO NOT
asked by Anonymous 
physics
A certain LCD projector contains a single thin lens. An object 23.5 mm high is to be projected so that its image fills a screen 1.87 m high. The objecttoscreen distance is 3.05 m. (a) Determine the focal length of the projection lens. mm (b) How far from
asked by Zachary 
math
You are at the music store to buy some CDs. You have $45 to spend and the store sells CDs for 12.99 each. Write an inequality that represents the number, n, of CDs that you can buy without spending more money than you have. help greatly appreciated thk
asked by emily 
math
The temperature in degrees Fahrenheit is equal to 32 more than 9/5 times the temperature in degrees Celsius. One day the high temp. was 95 degrees Fahrenheit. What was the high temp. in degrees celsius? I did 32+(9/5*35) 32+63=95 so my answer is 35 degrees
asked by B6 
math
solve: 6 < x + 4 less than or equal to 11
asked by raven 
Physics
Two astronauts, each having a mass of 61.9 kg, are connected by a 14.7 m rope of negligible mass. They are isolated in space, orbiting their center of mass at speeds of 5.57 m/s. Calculate the magnitude of the initial angular momentum of the system by
asked by Celeste 
Form a polynomial
Form a polynomial f(x) with real coefficients having the given degree and zeros Degree 5; zeros: 8; i; 8+i
asked by Alley 
chemistry
Calculate the solubility of Mn(OH)2 in grams per liter when buffered at each of the following. (a) pH 7.7 (b) pH 9.6 (c) pH 11.3
asked by hannah 
5th grade math (word problems)
I'm not sure how to solve this problem. I know that i need to divide 36 cookies. But not sure how to figure out the number of groups. Am i using multiples of 4? Marie made 3 dozen cookies. She needs to dived them evenly into groups greater than 4. What are
asked by Alex 
Chemistry
How many mL of .715 M HCI is required to neutralize 1.25grams of sodium carbonate? (Producing carbonic acid)
asked by Celina 
cheeeeemmmiiisstttrrryyyy
i am going crazy trying to figure this out. i just completed an experiment with heats of fusion and vaporization but for some reason i cant answer and explain this question would 20.0g of steam at 100 degree celsius be enough to melt 20.0g of ice at 0
asked by stazi 
Chemistry
Determine the percent Composition of each element in phenyl sulfide: (C6H5)2S. Please show work in order to walk me through this.
asked by Kristen 
Algebra
Five times the reciprocal of a number equals the sum of 3/2 the reciprocal of the number and 7/6. What is the number
asked by Nicole 
algebra attn wayne
5/x3  3/x+3 = 2/x^29 You said to divide by 9 on both sides 9(x+3)3(x+3)=2 9x+273+9=2 6x=36 6x=48 x=8 Is this correct? Thanks for your help.
asked by Anonymous 
Algebra
As x ranges over all real values, what is the minimum value of f(x)=x123+x456 + x789 ?
asked by John 
physics
A child’s toy consists of plastic attached to a spring. The spring is compressed against the ﬂoor a distance of 2.55 cm, and the toy is released. The acceleration of gravity is 9.8 m/s 2 . If the toy has a mass of 116 g and rises to a maximum height of
asked by Anonymous 
science
32g of KCI OR KCIO3 IN 100ML OF WATER, AT WHAT TEMP WOULD IT BECOME SATURATED.. WHAT IF IT IS 37g? Thank you
asked by mae 
university
prove 2  n^2 + n + 1
asked by math 
Algebra
\begin{align} & (x1)(x2)(x3) + (x2)(x3)(x4) \\ + & (x3)(x4)(x5) + (x4)(x5)(x6) \\ + & (x5)(x6)(x7) + (x6)(x7)(x8) =0 ? \end{align}
asked by John 
Chemistry
How many milliliters of 0.291 M HCl would be required to titrate 6.83 g KOH?
asked by David 
Algebra
What is the product of all roots to the equation \begin{align} & (x1)(x2)(x3) + (x2)(x3)(x4) \\ + & (x3)(x4)(x5) + (x4)(x5)(x6) \\ + & (x5)(x6)(x7) + (x6)(x7)(x8) =0 ? \end{align}
asked by John 
science
On a clear night, Ram correctly identified some clouds among the stars as the Milky Way. What part of the Milky Way was MOST visible to Ram? a]asteroids b]dust c]planets d]stars I think it is ethier b or d. Please help. Appreciative. ;]
asked by Izzy 
physics
A singly charged positive ion has a mass of 3.35 × 10−26 kg. After being accelerated through a potential diﬀerence of 128 V, the ion enters a magnetic ﬁeld of 0.784 T, in a direction perpendicular to the ﬁeld. Calculate the radius of the path of
asked by Anonymous 
Math
Mr. Brown bought 4 boxes of stickers to school. Each student that came to his class received 1/5 of the box. How may students will get a sticker before they run out?
asked by Kim 
Algebra
If a, b and c are nonzero reals such that a + b + c = 11 and \frac {1}{a} + \frac {1}{b} +\frac {1}{c} = 0, what is the value of a^2 + b^2 + c^2?
asked by Anonymous 
Math
The popcorn booth serves tubs that weigh 3/74 of a pound. Mrs. Taylor has a box that weights 6 ponds. How many tubs can she make from the box?
asked by Kim 
Trigonometry
If cos(a)=1/2 and sin(b)=2/3, find sin(a+b), if 1) Both angles are acute; Answer: (sqrt(15)+2)/6 ii) a is an acute angle and pi/2 < b < pi; Answer: (2sqrt(15))/6 2. Find the exact value of the six trigonometric functions of 13pi/12. Partial answer:
asked by Brandi 
Math
The face painting booth has 1/4 pint of paint. There are five students who want their faces painted. How much paint should we use for each child?
asked by Kim 
German
Decide if the following sentence is grammatically CORRECT or INCORRECT. Der Mann kann nicht ausgehen. a. correct b. incorrect
asked by bubbie 
chemistry
write and balance Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon dioxide and carbon dioxide gas
asked by tamara 
Trigonometry
Given \tan \theta = \frac{4}{3}, where \frac{\pi}{2} < \theta < \pi, what is the value of \frac{1}{\sin \theta + \cos \theta}?
asked by Jason 
Math
What is the scale and interval on a bar graph and line graph
asked by Jerald 
Trigonometry
Every point (x,y) on the curve y = \log_{2}{3x} is transferred to a new point by the following translation (x',y') =(x+m,y+n), where m and n are integers. The set of (x',y') form the curve y = \log_{2}{(12x96)} . What is the value of m + n ?
asked by Jason 
english
"The song of Wandering Aengus" is a (n) ________poem. A: epic B: allegorical C: dramatic D: prose Answer : C ?
asked by Ciara 
Trigonometry
ABC is a right triangle with AB = 2, BC = 3\sqrt{5}, AC = 7 and \angle ABC = 90^\circ. If \cos \angle BAC = \frac{a}{b}, where a and b are coprime positive integers, what is the value of a + b?
asked by Dan 
english
For the speaker in "Local Sensibilities,"pineapples represent: A: His favorite food. B: A Thanksgiveing ham. C: tourists D: work. Answer: B ?
asked by Ciara 
Physics
Every once in a while a bird will get hit by a baseball during a baseball game. The longest home runs in baseball land about 500 feet (which is 152.4 meters) from home plate. If these balls leave the bat at a 45 degree angle to maximize their distance,
asked by Dan 
English!
The tone of "A smile" is ? A: Hopeful B: Cheerful. C: tense D: light Answer : D In "Boast Not , Proud English," the writer is protesting against: A: Prejudice B: Blasphemy C: Religion D: tolerance Answer: C ? In "Birches," Frost compares the broken ice
asked by Ciara 
Calculus
The volume of the 3dimensional structure formed by rotating the circle x^2 + (y5)^2 = 1 around the xaxis can be expressed as V = a\pi^2. What is the value of a?
asked by Dan 
math
find the rule: X=8,9, 10,11,12 y=8,10,12,14,16
asked by chris 
Calculus
Let N = \int \int \int_B xyz^2\ dV , where B is the cuboid bounded by the regions 0 \leq x \leq 1, 1 \leq y \leq 2 and 0 \leq z \leq 3. If N = \frac{a}{b}, where a and b are coprime positive integers. What is the value of a+b?
asked by Jacob 
Physics
Airplanes are noisy things. For example, if you stand really close to a runway, a military jet can produce a sound intensity of about 100~W/m^2 at a distance of 30 m from the plane (this is beyond painful noise). You live near a military airport and want
asked by Steve 
Physics
Two parallel wires carry 1A currents in unknown directions. The distance between the wires is 10cm. What is the magnitude of the magnetic field B in Teslas at a point P located 6cm away from the axis of one of the wires and 8cm away from the axis of
asked by Steve 
Math
Not sure how far to take this problem down. The directions say to simplify using the distributive property. 4(x + 1) 2 divided by 2. Would it be 4x +4 2 divided by 2 or 4x + 2 divided by 2 or 2x +1? Thanks..
asked by Brandi 
math
When lashone won a contest she got a silver medal with a diameter of 6 centimeters. What is the medals area?
asked by tajia 
Math
Hiro went to the store after school to pick up groceries. His list said he needed to pick up one jug of milk, one loaf of bread, one dozen eggs and one package of cookies. Milk comes in 1%, 2% and 3.25% varieties. Bread comes in white and 100% whole wheat.
asked by Lucy 
Math
need help on this review question. Determine each sum by writing an equivalent numberical expression using Commutative and Associate properties. 3 + 9 + 7 + 6 For commutative could you just put 3 + 7+ 9 + 6? I'm confused on what do do for associative since
asked by Brandi 
English/writing
what is a catchy topic for my essay based on this thesis statement? In Nathaniel Hawthorne's, The Scarlet Letter, it suggests that one must find their own internal strength and strive for individual redemption by applying the beliefs of transcendentalism
asked by Sally 
Life orientation
Name two institutions/community organisatins that are involved in supporting or redress to the disaster air pollution and explain how these organisations are involved in providing a safe and healthy environment
asked by Dikeledi 
German
Where is the nonmodal second verb placed in a sentence? a. in the beginning b. second position c. at the end d. wherever you want to put it i feel like this is b but i'm not sure. :~(
asked by bubbie 
Grammar (Ms. Sue)
Indentify the tense of the underlined verb in each sentence below. 1). Statistics IS a branch of mathematics. 2). It DEALS with the study of numerical data. 3). Many people HAVE STUDIED statistics for work or fun. 4). Batting averages and scoring averages
asked by Anonymous 
Algebra
The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as \frac{a}{b} where a and b are coprime positive integers. Find a + b
asked by Anonymous 
Geometry
The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as \frac{a}{b} where a and b are coprime positive integers. Find a + b
asked by Anonymous 
college algebra
Solve the equation. How do you solve a fraction? X^2/3=1/16 Thanks
asked by Anonymous 
math
On Friday, Lewis saw a certain number of hummingbirds, h. On Saturday, He saw 3 more than twice the number of hummingbirds he saw on Friday. Write an expression for the number of hummingbirds Lewis saw on Saturday.
asked by peter 
Meaning
What does Diem Ex Dei mean
asked by Anonymous 
math
How do you do the math for the problem 14  7 × 2
asked by Anonymous 
Chemistry
Why can't NH_3_ donate a proton and act as a BronstedLowry acid?
asked by Anonymous 
Math
AlgebrAic factorization 1)6(2a3)(a+7)+18(2a3)(3a+2) 2) (3x4)(5x+1)(5x+3)(43x) I know number 1 and 2 but just wanted to make sure if my answers I need help in this only: 3) (3x1)^2 + 5(13x)+3x(13x)^2
asked by Jim 
Physics
a trunk is dragged across a level floor using a massless rope that makes an angle of 30 degrees with the horizontal. when the tension in the rope is 200 N and the kinetic friction coefficient = 0.5, the trunk moves at a constant speed. what is the mass of
asked by Kerwyn 
math
whats 4x+28=4(x+3)+16
asked by jizzmin 
College algebra
Use the rationals theorem to find all the zeros of the polynomial function. Use the zeros to factor f over the real numbers, F(x)=7x^3x^2+7x1
asked by Alley 
math
A FARMER BUILT A PEN FOR HIS FAVORITE PIG. THE PEN SHOWN BELOW HAS AN AREA OF 50 SQUARE FEET.THE PEN IS TWICE AS WIDE AS IT IS LONG AND HAS A PERIMETER OF 30 FEET. WHAT IS THE LENGTH, IN FEET OF THE PEN.
asked by george 
algebra
The number of red beads sheila has is four times as many as the number of green beads she has .There are 75 red and green beads.How many red beads does sheila have?
asked by jessica 
math
5^0/5^6 * 1/5^11 / (5^2)^4/(5^10)^2
asked by Rose 
chemistry
When 1219 J of heat energy is added to 40.4 g of ethanol, C2H6O, the temperature increases by 12.3 °C. Calculate the molar heat capacity of C2H6O. (In J)
asked by Anonymous 
10 grade algebra
please help with this problem Your dad is taking Biology as part of the veterinarian program at the local community college. This semester he will spend a total of 40 hours in the biology lab, and he will take notes in class 6 hours per week. Define a
asked by mary 
Algebra
If a, b and c are nonzero reals such that a + b + c = 11 and \frac {1}{a} + \frac {1}{b} +\frac {1}{c} = 0, what is the value of a^2 + b^2 + c^2?
asked by Steven 
algebra
Find the sum of all positive integers b such that b^2=a^3+1, where a is a prime number.
asked by Steven 
Math
Algebraic factorization (2x5)(3x+2)(4x10)(5x+4)
asked by Jim 
Physics
A spring is compressed 12 cm. A 100g block is placed against the spring. When the block is released, the block rises 2.0 m up the slop. Neglect friction. What is the spring constant of the spring?
asked by Kerwyn 
algebra
6(15) + 40 = ?
asked by mary 
Physics
Satellites A and B are in circular orbits, with A two and a half times as far from earth's center as B. How do their orbital periods compare?
asked by Kerwyn 
math
Suppose z is a complex number such that z^5 = \sqrt{3} + i and z = \sqrt[5]{2} ( \cos n^{\circ} + i \sin n^{\circ}) , where 270 < n < 360 . Find the exact value of n .
asked by John 
Health Ethics
I need help with the following scenario to get started on a project. I am totally lost. Please HELP! Scenario: One of the patient care aides has complained to her manager that the Chief Medical Officer of the hospital has been following her around, making
asked by Linda 
Geometry
The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as \frac{a}{b} where a and b are coprime positive integers. Find a + b.
asked by John 
PHYSICS
The rate at which an object's velocity changes with time
asked by Anonymous 
Chemistry
How do I quickly identify whether or not a salt is soluble?
asked by Anonymous 
chem 105
How many liters of , measured at 20 , must be burned to provide enough heat to warm 28.3 of water from 15.5 to 31.3 , assuming that all the heat of combustion is transferred to the water, which has a specific heat of 4.18 ? Recall that .
asked by Anonymous 
science
What is the formula for friction force
asked by Connor