Questions Asked on
December 3, 2017

Chemistry
A solution contains 2.2×10−4 M Ag+ and 1.3×10−3 M If NaI is added, will AgI(Ksp=8.3×10−17) or PbI2(Ksp=7.9×10−9) precipitate first? I know the answer to this is AgI Specify the concentration of I− needed to begin precipitation.
asked by Caitlin 
algebra 1
How many solutions does this system have2x+y=3 6x=93y A. one B. none C. infinite D. two A??
asked by sydney 
Math
Compare the graphs of the logarithmic functions f(x)= log(7)x and g(x) = log(4)x. For what values of x is f=g, f>g, and fg, but what is f
asked by Max 
geometry
Given: ΔАВС, m∠ACB = 90° CD⊥AB,m∠ACD =60° BC = 6 cm. Find: АD
asked by Johnny 
Math (PROBABILITY)
Elizabeth wants to use a standard number cube to do a simulation for a scenario that involves three equal outcomes. What is one way in which she can do this?
asked by Gabby 
Math
If the probability of an event happening is p, what is an algebraic expression that represents the probability that the event does not happen?
asked by Gabby 
Economics
which of the following changes in trade would produce the greatest increase in gdp? increase exportsm& increase imports increase exports & decrease imports decrease exports & increase imports decrease exports & decrease imports my answer is the 2nd one
asked by Steve 
SCIENCE
AN AIRPLANE TRAVELS 290 KM BETWEEN AUSTIN AND DALLAS IN 1 HOURS 15 MIN.WHAT IS ITS AVERAGE SPEED?
asked by HANEEN 
math
In ΔABC,AD and BE are the angle bisectors of ∠A and ∠B and DE║ AB.If m∠ADE is with 34° smaller than m∠CAB,find the measures of the angles of ΔADE.
asked by Johnny 
Math
The soccer team is selling key chains to raise money for the team. They ordered 100 key chains that sell for .25 each. There is a flat shipping rate of $8. The team sells the key chains for $2 each. With that information, I figured they made $33.00 selling
asked by Nevaeh 
physics
A cyclist in an Olympic race is moving in a circular track of radius 80 m with speed 72 km/h. He has to lean from the vertical approximately through an angle of... ANS: tan1(1/2) How is tan1(1/2) derived in this answer?
asked by JC 
Math
The side of a square flower bed is 1 m and 80 cm long. It is enlarged by digging a strip 20 cm wide all around it. find the area of the flower bed and also the increase in area of the flower bed answer me.
asked by Amreen 
algebra
OLD MCDONALD IS GOING TO PUT A PIG PEN UP AGAINST HIS BARN. HE HAS 45 FEET OF FENCING AND WILL ONLY NEED TO MAKE 3 ADDITIONAL SIDES, AS THE BARN ACTS AS THE FOURTH SIDE.. WHAT IS THE MAXIMUM AREA THAT THE PIG PEN CAN HAVE.
asked by Megan 
Chemistry
If 0.370 g of Ca(OH)2 is added to 500 mL of water and the mixture is allowed to come to equilibrium, will the solution be saturated?
asked by Caitlin 
Math
An object is thrown upward from the top of a 160foot building with an initial velocity of 144 feet per second. The height, h, of the object after t seconds is given by the equation h=16t^2+144t+160. When will the object hit the ground? The object will
asked by Marcus 
math
Could you explain this? ("Dumb it down for me") So far I know that 2^2 x 3 x 5^4 x 8 x 11^2 is equal to 4 x 3 x 625 x 8 x 121. (I think) ========================================== A number is written with the following factorization: 2^2 × 3 × 5^4 × 8
asked by Pepsi 
Algebra I
11. The equation T = 0.63s + 78 can be used to determine T, the temperature in degrees, inside an oven s seconds after the oven is turned on. Which statement relative to this equation is true? * 1 point A) Each second the temperature increases by 78
asked by PLZ HELP CONNEXUS 
Calculus
Approximate the area under the curve of f(x)=9x^2 between x=2 and x=3 by calculating the area of 5 rectangles for both left hand endpoints and right hand endpoints. I have the left hand and right hand endpoints, what I need help in is solving for the
asked by Mike 
math
When you start your shift, the warehouse has 1,483 ceiling fans. if you pack and ship 32 fans per hour, how many fans will be left in the warehouse at the end of your 8 hour shift?
asked by student that needs help asap 
Algebra
Factoring Polynomials GCF and Quadratic Expressions: 5b^2k^2+25bk^2250k^2 The answer I figured was GCF for the polynomial is 5 and the GCF for the variable is bk^2. Is this correct.
asked by Mary 
English
List the characteristics that are unique to Arthur and to Sundiata. What qualities do the two characters have in common? I need help figuring out which qualities are unique to Arthur and which are unique to Sundiata.
asked by Anon 
Physics
An ideal string passes over a fixed pulley and carries masses M1 = 12kg and M2 = 8kg tied at its end. Calculate the acceleration of masses and tension in the string when released (g=10m/s2) I know the answers are a = 2 m/s^2 T = 96 N But I don't know how
asked by JC 
Math
A ladder is leaning against a building so that the distance from the ground to the top of the ladder is 4 feet less than the length of the ladder. Find the length of the ladder if the distance from the bottom of the ladder to the building is 8 feet.
asked by Marcus 
physics
A 200g mass is attached to a spring and allowed to execute simple harmonic motion with a period of 0.25seconds. If the total energy of the system is 2.0 joules, find the force constant of the spring and the amplitude of the motion.
asked by Tina 
Intermediate Algebra
Suppose a college bookstore buys a textbook from a publishing company and then marks up the price they paid for the book 33% and sells it to a student at the markedup price. If the student pays $75.00 for the textbook, what did the bookstore pay for it?
asked by Jon 
Math
You are driving 2760 miles across the country during the first 3 days of your trip you drive 1380 miles. If you continue to drive at the same write each day, how many days will the entire trip take?
asked by Cm 
Statistics
Consider the probability that fewer than 17 out of 145 people will get the flu this winter. Assume the probability that a given person will get he flu this winter is 11%. Approximate the probability using the normal distribution. Round the answer to four
asked by Jane 
math
How much water must be added to 60 liters of 60 percent alcohol mixture to reduce it to a mixture of 50 percent alcohol concentration? What if 30 percent alcohol mixture is added instead of water?
asked by Melvin 
public and health
Which of the following statements is true? A. Carbon monoxide is a greenhouse gas B. The United States has effectively controlled its greenhouse gas emissions C. Emission of greenhouse gases by various countries is proportional to the size of their
asked by Anonymous 
Chemistry
Why do heteroatoms help determine the physical and chemical properties of a molecule? a They forms more bonds to other atoms than carbon can. b They possess nonbonding pairs of electrons and affect the molecule’s polarity. c They possess stronger bonds
asked by Sabrina Megasion 
Physics
A harmonic wave moving in the positive x direction has an amplitude of 4.4 cm, a speed of 41.0 cm/s, and a wavelength of 45.0 cm. Assume that the displacement is zero at x = 0 and t = 0. Calculate the displacement (in cm) due to the wave at x = 0.0 cm, t =
asked by Trace 
Finance
Variable rate loans typically have a 1)________ interest rate than fixed rate loans because with variable rate loans, the borrower assumes the risk that the interest rate might 2)_________. a. Higher, Increase b. Lower, Increase c. Higher, Decrease d.
asked by Jamye 
Physics
You hear the sonic boom of a highspeed jet plane exactly 3.10 s after it passes directly overhead in level flight. At the time you hear the boom, you see the plane at an angle of 22.0 o above the horizon. Assume that the speed of sound at the altitude of
asked by Trace 
Health and communications
Data on quality is available for all of the following except: A. Feeforservice providers in Massachusetts B. Managed care plans in the U.S. C. Coronary surgeons in New York State D. Effective treatment of heart attack patients I cant seem understand this
asked by Anonymous 
Physics
A car traveling 35.0 m/s overtakes another car going only 22.0 m/s. When the faster car is still behind the slower one, it sounds a horn of frequency 1500.0Hz. What is the frequency heard by the driver of the slower car? What is the altitude of the plane?
asked by Trace 
chemstry// organic
How does a retrosynthetic analysis propose a way to synthesize an organic compound? a.The analysis begins with an easy to obtain starting material and then adding on individual atoms to make the desired product. b.The analysis begins with the product and
asked by pipper stocking 
calculus 2
how to find the integral of (3x+pi)cos3xdx from [pi over 6, pi over 3}
asked by bern 
Physics
A car traveling 35.0 m/s overtakes another car going only 22.0 m/s. When the faster car is still behind the slower one, it sounds a horn of frequency 1500.0Hz. What is the frequency heard by the driver of the slower car?
asked by Trace 
Math
How can you check the answer to a decimal multiplication problem
asked by Caroline 
Thermo
Argon in a rigid tank is heated from an initial state of 50 °C, 2 bar and 2m ³ to a final pressure of 8 bar. Determine the final temperature in °C to 2 decimal places. Argon cp=0.5203 kJ/kgK cv=0.3122 kJ/kgK
asked by Zz 
algebra
How much water must be added to 60 liters of 60 percent alcohol mixture to reduce it to a mixture of 50 percent alcohol concentration? What if 30 percent alcohol mixture is added instead of water?
asked by Melvin 
algebra 1
Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. y=4x+3 and 2x+8y=5 A. parallel B. perpendicular C. neither I think parallel?
asked by sydney 
math
The cylindrical tank has a radius of 5 feet and is 2/3 full of water. To the nearest cubic foot, how many cubic feet of water are in the tank?
asked by Kulee 
Chemistry
Glucose( C6H12O6) is produced by photosynthese. For every kilo of water the plant takes in ,how much glucose can it make ? I done the balanced equation wich is (I think) 6H2O+6CO2 = C6 H12 3O6 After that I get a ratio of 108/372 wich give me a tota of 3444
asked by Karen 
algebra
A perfume maker wishes to blend perfume valued at $ 410 an ounce with perfume worth $ 250 an ounce to obtain a mixture of 40 ounce worth $ 300 an ounce. How much of the $ 410 perfume should he use?
asked by Melvin 
algebra 1
Are y=4x+3 and 2x+8y=5 parallel, perpendicular, or neither? I think neither?
asked by sydney 
Chemistry
29.25g of sodium chloride is added to water and undergoes electrolysis according to this equation 2Cl=Cl2 Calculate the mass of chlorine produced. I am lost with this one !
asked by Karen 
math
hello I am new here my friend recommended me this website. here is my question: if a clock chimes the number of the hour every hour, how many times will it chime in a day?
asked by ivan 
Chemistry
Which of the labeled sections in the below molecule would be considered an unsaturated portion of the molecule? A) \ B) C)  \\\ /\ /\ \ a. A and B b. B only c. C only d. B and C
asked by Sabrina Megasion 
chemistry// organic
This is a pushing question. We discussed how phenols are typically more acidic than alcohols, even though they both contain the same hydroxyl functional group, because phenols possess an aromatic ring that delocalizes the negative charge after a proton is
asked by pipper stocking 
math
The capacity of a rectangular tank is 5.2cubic metre and area of its base is 2.6Ã—1000 square centimetres.find its height
asked by Neha 
Math
The sum of the digits of a three digit number is 20.The middle digit is equal to one fourth the sum of the other two. If the order of the digits is reversed the number increases by 198. Find original number
asked by Rohan 
physics
What is the maximum speed a car can travel over the top of a hill of radius 22 m before flying off the hill?
asked by Brenna 
Algebra 1
Write an equation that relates the number of parallelograms in the figure (n) to the perimeter of the figure (P) number 1. square has a 4 at each end and a 5 on the top of the square and one 5 on the bottom of the square number 2. 2 squares attached side
asked by Deuce 
math
limit x tends to infinity ( 1+root n)/(1rootn)
asked by Binoy kumar mahato 
Math
How do you check the answer to a decimal multiplication problem plz explain your reasoning
asked by Caroline 
math
a van travelled 45km on 30 litres of diesel. How far could it travel on 45 litres?
asked by logan 
Business law
A contract cannot involve both and implied warranty of merchant ability and an implied warranty of
asked by Kathy 
Chemistry (organic)
What is the molecular formula for the below lineangle structure? The structure is a pentagon with one line connected to a corner. I'm sorry if that doesn't make any sense but the picture will not paste here. a C6H11 b C5H11 c C7H12 d C5H13 e C6H12 Thank
asked by Sabrina Megasion 
chemistry// organic
What type of reaction forms an alkaloid salt? a. The reaction between an amine and an alcohol. b. The reaction between an amine and an acid. c. The reaction between an alcohol and a base. d. The reaction between an amine and a base. e. The reaction between
asked by pipper stocking 
algebra 1
f(x) = 10(2)^x Is this function's rate of change over the interval 1 ≤ x ≤ 2 greater or less than that of the linear function g(x)=10x + 7?  What is this problem asking me to do and how do I do it?
asked by name 
Math
The transformation T:R^2》R^2 is defined by T(1,0)=(2,5) and T(3,2)=(1,4). Find the natural matrix of the linear transformation T and find T(x,y).
asked by Phil 
Calculus
Find dy/dx and express the final answer with a common denominator y=ln x^(2(4x12))
asked by Mike 
Science
A runner compels one lap around a 300m oval track, returning to her staring position. What distance does she cover, and what was her displacement? Explain.
asked by Gianna 
calculus 2
How to solve the definite integral of(3x+pi)cos3xdx from [pi over6,pi over 3]
asked by bern 
Calculus
Find dy/dx and express the final answer with a common denominator y=lnx^2(4x12)
asked by Mike 
Math
The sum of the digits of a three digit number is 20. The middle digit is equal to one fourth the sum of the other two. If the order of degree is reversed the number increases by 198. Find the original number
asked by Rohan 
Calculus
Calculate the Riemann sum of the area under the curve of f(x)=9x^2 between x=2 and x=3 The answer I come up with is 10/3, but when I solve using integrals, the answer I get is 100/3. Am I doing something wrong?
asked by Mike 
Math
after a cyclist has gone 2/3 of her route, she gets a puncture in a tire. Finishing on foot, she spends twice as long walking as she did riding. How many times as fast does she ride as walk? I know that the answer is 4 but do not know how to get to this
asked by Kelley 
math
I have an equation of P=(1703x)(x25) How do I determine the yintercept I know I can determine the x intercepts by setting x = to zero, so those are easy to find, but I'm not sure how to find the yintercept. Thank you.
asked by carly 
Math
Suppose C and D are 2 × 2 matrices with det(C) = −3 and det(D) = 2. Find the determinant of the matrices 8C^3D2 and 5 C^1
asked by Amelia 
Math
my family has a $6000/ month budget. we spend 1/3 of our budget on food, 1/4 on our mortgage, 1/5 for clothing, and 1/10 for childcare. How much money is left for other expenses
asked by Kora 
9th grade algebra
what is the explicit formula of NOW . 3 = Next answer: y=______blank____________ thanks!
asked by ania 
physics
A certain sample of a pure quartz crystal has a mass of 276 grams and a volume 95.8cm^3. what is the mass density of the sample? what would be the volume of a larger quartz crystal of the same density if its mass is 1.138 kg? Help please!! Have been
asked by Anonymous 
algrebra 2
f(x)=2x2 g(x)=4x+2 find (f0g)(x)
asked by ethan 
Geometry
M angle pqr =80 m arc pyr=80 find m arc pxr and m angle pqr
asked by Roshni 
poetry and creative writing
this needs a friend or sibling to do with but I don't have a sibling or a friend who is not busy. My parents have gone too work too. Can u help me instead? write a colourful description, using as many senses as possible. Describe a market or shop know to
asked by matthio 
Chemistry
What is the name of the below organic compound?  \ \   \/\/\/ This is kind of what it looks like sorry this looks so horrible the image would not copy over. a 1,1,3triethylhexane b 3ethyl5propylheptane c 3propyl5ethylheptane d 3,5diethyloctane
asked by Sabrina Megasion 
Math  Steve
I posted this question yesterday that you answered, so thank you, but how do I put this in my calculator to get this answer? If the exponential equation of best fit is y= 2.9046(1.9798)^x, when will the population be more than 13 million? How would I
asked by Carly 
Geometry: Right Triangles
In my math homework, it is asking me to find the height of a triangle. Does anyone know how to find the height of a triangle? If you could, could someone give me an example problem? Thanks a lot!
asked by Anonymous 
Maths
Only using 2357,what number is a three digit number that add by a four digit number and equals to a five digit number? You can only use zero on the last digit of the four digit number.
asked by Eva 
Science
Why does 1 hour and 15 minute is 1.25
asked by Ssssssssssss 
algebra 1
I need to find the slope of a line that is parallel to the xaxis, completely perpendicular. The answer choices are A. 0 B. 1 C. undefined D. infinity I'm thinking undefined?
asked by sydney 
algrebra 2
g(n)=4n+2 h(n)=3n+3 Find (g0h)(n)
asked by ethan 
math
The tank has a radius of 5 feet and is 2/3 full of water. To the nearest cubic foot, how many cubic feet of water are in the tank?
asked by Kulee 
pre calc
why does x^4+7 and x^4 have the same derivative, meaning can someone explain to me why they are both equal to the derivative 4x^3?
asked by homework 
calculus 2
find the definite integral for 3x+pi for the fraction interval pi over 3 and pi over 6
asked by bern 
Business [ Human Resource]
What positions are under the Evalutaion manger?
asked by Krystel 
Algebra I
3x =y and 4x + y =70
asked by Anonymous