Questions Asked on
December 10, 2016

PreAlgebra
The width of a picture is 20 cm. Using a color copier, you reduce the width of the picture to 5 cm. What is the scale factor of the dilation? A)5 B)1/5 C)4 D)1/4*****
asked by Chubby Gerbal 
Chemistry
For the reaction Ag2S(s) ⇌ 2 Ag+ (aq) + S2 (aq), what happens to the equilibrium position if ammonium sulfate is added? A) doubles B) shifts to the left C) does nothing D) shifts to the right E) halves
asked by Mimi 
Maths
Mona's father is thrice as Mona after 12 years his age is just twice of his daughter find their present age?
asked by Anonymous 
Check Answer!! math
A test was given to a group of students. The grades and gender are summarized below A B C Total Male 7 14 11 32 Female 15 13 16 44 Total 22 27 27 76 If one student is chosen at random from those who took the test, Find the probability that the student was
asked by Anonymous 
college statistic
A study was done on skull sizes of humans during different time periods. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the
asked by Anonymous 
Chemistry
Identify the equation for which Keq = [Cu+]2[S2]. A) CuS(s) ⇌ Cu2+(aq) + S2 (aq) B) 1/2Cu2S(s) ⇌ Cu+(aq) + 1/2 S2 (aq) C) Cu2S(s) ⇌ 2Cu+(aq) + S2 (aq) D) Cu2S(s) ⇌ Cu+(aq) + 2 S2 (aq) E) none of the answers
asked by Mimi 
Functions  math
The function f is such that f(x) = 2x + 3 for x ≥ 0. The function g is such that g(x)= ax^2 + b for x ≤ q, where a, b and q are constants. The function fg is such that fg(x)= 6x^2 − 21 for x ≤ q. i)Find the values of a and b ii) Find the
asked by Desperately seeking help 
Chemistry
Which of the following is TRUE for a system that is in dynamic equilibrium? A) The forward reaction goes to 100% completion. B) The concentration of products is equal to the concentration of the reactants. C) The reaction rate of the forward reaction
asked by Mimi 
language arts
Could you check my answer please..thank you Which of the following sentences contains a linking verb? A. Yesterday, Sarah experienced rock climbing for the first time.xxx B. Sarah seemed nervous at first. C. She climbed very well for a beginner. D. I think
asked by Justin 
Maths
a chord of radius 20cm subtends an angle of 90 degrees at centre. find the area of the corresponding major segment of the circle
asked by Harshal 
algebra
The base of a triangle is 3 inches less than twice its height If the area of the triangle is 126 square inches what equation can be used to find h the height of the triangle in inches
asked by Anonymous 
Chemistry
for any solute what important condition must be stated in order to report the solubility answer
asked by Angelina 
Algebra
A watermelon is dropped from the top of a building The height of the watermelon above the sidewalk is given by h(t)=16t^2+240 with t representing number of seconds How many seconds does it take for the watermelon to hit the sidewalk
asked by Anonymous 
chemistry
The edge of a bodycentered cubic unit cell (which contains two atoms per unit cell) of an element Y was found to be 3.16x10^8cm.The density of the metalis 19.35g*cm^3. What is the approximate molar mass of Y?
asked by John 
Geometry
1. The lengths of two sides of a triangle are 9 and 15. What's can be said about the length of the third side? A. It must be greater than or equal to 6 and less than 24. B. It must be greater than or equal to 6 and at most 24. C. It must be greater than 6
asked by GummyBears18 
geometry
A rectangular prism has a length of 4.2 cm, a width of 5.8 cm, and a height of 9.6 cm. A similar prism has a length of 14.7 cm, a width of 20.3 cm, and a height of 33.6 cm. The dimensions of the smaller prism are each multiplied by what factor to produce
asked by hcat 
mathematics
A salesperson set a goal to earn $2,500 in August. She receives a base salary of $1,000 per month as well as a 20% commission for all sales in that month. How many dollars of merchandise will she have to sell to meet her goal? answer:7500
asked by Tiara Holmes 
Science
The Northern Hemisphere recives more solar energy during one half of the year than it does during the other half of the year. Which of the following happens during the year to explain this? A  the distance of the northern hemisphere from the sun changes B
asked by Unicorn 
Government
The president is the author of the nation's public policies in his or her role of A commander in chief B chief legislator C chief of party D chief citizen
asked by Dani 
MATH
the line 'l' has gradient 3 and cuts the xaxis at 4 then its equation?
asked by Ana 
ENGLISH
Mark the stressed syllables in the following sentences 1. can i see you today? 2. it's impoossible to please everybody. 3. The light's wrong for photography. 4. My mind went blank and everything blacked out. 5. Please bring me a chair
asked by SARITHA 
maths probability
a spinner is marked green yellow red and blue. neel conducted an experiment spinning the spinner several times
asked by a 
Math
My sister is 8 years older than I am. The sum of our ages is 26. Find our ages
asked by Maria 
Math
If the demand function of the monopolist is {p=2000.5x} and its cost function is {C=100+5x+7x^2}. Value of 'x' , price and the amount of profit for which profit maximizes are:
asked by Ana 
physics
The coefficient of kinetic friction for wood on wood is o.55. The coefficient of kinetic friction for wood on wood is 0.68. For a 3.5kg wood block being pulled horizontally: a. what is the pull force needed to start the wood block moving on a wood floor?
asked by maddie 
Science
Which statement best describes a spring tide? A  The periodic rise and fall of the water level in the oceans B  the tide if maximum range that takes place two times a month C  the difference in levels of ocean water at high tide and at low tide D  a
asked by Unicorn 
Algebra2
Name the property of real numbers for 2(x+4)=2x8 associative property of multiplication communitive property of addition distributive property associate property of addition my answer is distributive property
asked by Steve 
Anatomy and Physiology
1. Simple sugars are (1 point) lipids. monosaccharides. polysaccharides. minerals. 2. Which of the following statements is not true about the immune system? (1 point) In children, lymphatic tissues such as adenoids, tonsils, and lymph nodes enlarge as
asked by unknown 
Science
Cassie is writing an equation to show the effect of gravitational pull of the sun and moon on tidal range which equation would Cassie use to show the effect of the sun and the moon on Spring tides? A  sun + moon = spring tides B  sun + Earth = spring
asked by Unicorn 
Calculus
A trough is 15 ft long and 4 ft across the top. Its ends are isosceles triangles with height 3 ft. Water runs into the trough at the rate of 2.5 ft3/min. How fast is the water level rising when it is 0.89 ft deep? Give your answer correct to 3 decimal
asked by KT 
Algebra
The sum of 3 integers is 194. the sum of the first and second integers exceeds the third by 80. The third integer is 45 less than the first. Find the three integers
asked by Teena 
Science
Luis created a clay model of earth and the sun to show how earth rotates, Luis wants to use a toothpick to represent earths axis of rotation Where should he put the toothpick A  horizontally through earth in the direction earth is traveling B  vertically
asked by Unicorn 
Probability
How many combinations are there of six distinct objects taken three at a time?
asked by Bobbie 
Algebra
In the mall you receive a coupon for 5 dollars off a pair of jeans. When you arrive at the store you find that all jeans are 25 percent off Let x represent the original cost of the jeans 18a.Write a function F(x) that represents the effect of your original
asked by Anonymous 
Algebra
Can you please help on this Algebra problem? Keana's piggy bank contains $4.30 in nickels and dimes only. If she has 59 coins in her ban, then what is the sum of the digits in the number of nickels in Keana's bank? Write a system of equations for this
asked by Leroy 
optional maths
The vertices of triangle PQR are P(2,5),Q(6,1)and R(2,1).Find the length of the longest median.
asked by Abhi 
language arts
Could you check my answer please..thank you Which of the following sentences contain a linking verb? A. Teresa wore her favorite shoes today. B. Her shoes look really comfortable.xxx C. She put them on with striped socks. Teresa walked for hours without a
asked by Justin 
chemistry
Industrial waste contains Zn(II) and cyanide. The waste is toxic to aquatic species like fish. 1 If the waste consists of water, Zn(II) and cyanide, what ligands might complex with Zn(II)? 2 Write chemical equilibria reactions the must be considered to
asked by Alex 
CHEMISTRY
what volume of hydrogen is produced with excess HCL according to the equation Zn+2HCLZnCL2+H2
asked by FEMI 
Chemistry
Consider two equally sized balloons at room temperature, one filled with oxygen gas and one filled with an unknown gas. If the balloon filled with oxygen gas deflates in 37 hours and the other balloon deflates in 26 hours, which of the following is the
asked by bill 
Algebra
x^212x=36 I got x=6
asked by Anonymous 
Math (Polynomials)
What are the coefficients in the polynomial 4x^2+3x3? A. 4,3, 3 B. 4, 3 C. 4, 3, 3 D. 4, 3 I'm not sure how to do this can someone explain?
asked by Embershy 
h.p.
if a,b,c, are in h.p. prove that a^2+c^2> 2b^2 ? answer= 1/a,1/b, and 1/c are in h.p. =1/b1/a=1/c1/b =1/b+1/b=1/c+1/a =b+b/b^2=a+c/ac =2/b^2=a+c/ac =b^2(a+c)=2ac =(a+c)ac=2b^2 =a^2+b^2 >2b^2
asked by please see my answer 
Algebra
The ratio of girls to boys in the robotics class is 3 to 4. If there are 27 girls in the club, how many members does the club have in total?
asked by Anonymous 
triangles
In triangle ABC, AB = 12, AC= 9, D is a point on AC, AD = 3. E is a point on AB, so that triangle ADE is similar to ABC, what is the length of AE? (two different answers)
asked by jose 
Algebra
Can you please help me with this problem: The xintercept of a line has a value of 7/6 and a yintercept of 7. Another line has a slope that is twice the slope of the first line an a yintercept that is 15 more than the first lines' yintercept. What is
asked by Chris 
statistics
Janet has a jar with 8 gold marbles 12 silver marbles and 4 bronze marbles is she chooses two marbles without replacement, what is the probability that she chooses two silver marbles. I think the answer is 11/46 but not sure how to work the prboem
asked by tammy 
tribal government
if the tribal government don't recognize judicial board does separation of powers still work
asked by Lori 
Math.
two concentric circle with the ratio of radii as 2:3, what is the ratio of the circumferences
asked by jose 
math
The perimeter of two square are 428cm 396cm. Find the area of a square.
asked by mathematics 
Math
1. For a particular year, a company has gross annual income of $780,000, annual expenses of $270,000, and allowed depreciation of $60,000. The company is located in a state where the first $200,000 corporate income is taxfree, and any income above that is
asked by Anonymous 
Algebra
a ball is dropped from a 50 meter cliff and its height h above the ground at any time ti is given by thte equation h(t)=504.9t^2
asked by Anonymous 
Probability
What is the probability of an event E in a uniform sample space S?
asked by Bobbie 
calculus
The marginal cost is given by C'(x)=x^(1/3)+9. If the fixed costs are $175, find the cost of producing 8 units. thank you!!
asked by huy 
math
The following data give the 2010 gross domestic product (in billions of dollars) for all 50 states. (Source: Bureau of Economic Analysis). 173 49 254 103 1901 258 237 62 748 403 67 55 625 276 143 127 163 219 52 295 379 384 270 97 244 36 90 126 60 487 80
asked by emam 
math
equation of a straight line perpendicular to xaxis passing through the point (3,1)
asked by anon 
Algebra
14k ≥ 11 Solve
asked by Anonymous 
Algebra
A projectile is launchedf rom ground level and its height can be modeled as functions of time by the equation h=40t5t^2 What are the reasonable domain and range of this problem situation
asked by Anonymous 
Algebra
A ball is dropped from a 50 meter cliff and its height, h is above the ground at any time, t is given the equation h(t)=504.9t^2 How long is the ball in the air before it hits the ground
asked by Anonymous 
science
How many grams of sodium hydroxide is required to neutralize 73 grams of hydrochloric acid and to from sodium chloride and water
asked by bala 
Chemistry
Hi , I have this question and I do not know what steps to follow. Please help guide me. It will be really appreciated. Calculate the extent of oxidation in a stream where water it's in equilibrium with atmospheric oxygen and had a pH pic 6.5 (a(H3O+)
asked by Sarah 
Algebra
Please help me with this Algebra problem: The length of a rectangle is 91 less than six times the width of the rectangle. If the perimeter of the rectangle is 84 centimeters, what is the length of the rectangle? Write a system of equations for this
asked by Leroy 
Calculus III
Hi, this question is about Langrange multipliers. Given f(x,y) = y^2  x^2, subject to the constraint g(x,y) = 0.25x^2 + y^2 = 1, find the max and mins. So I found the partial derivatives for both f(x,y) and g(x,y): fx = 2x fy = 2y gx = 0.5x gy = 2y And
asked by Justin 
math
F(x,y) represents a velocity field of a fluid over a surface z=63x2y.If the magnitude of the velocity in the direction of the unit normal vector,n on S is 3z/(surds14), compute the flux of F(x,y) over the surface S in the first octant oriented upward
asked by Adam 
Math (calculus) (mean values)
A company introduces a new product for which the number of units sold Ss given by the equation below, where t is the time in months. s(t) = 155(7(9/(2+t))) a) Find he average rate of change of s(t) during the first year. I got the answer to be 1395/28 b)
asked by Ray 
Kumar
What is number?
asked by Raj 
Algebra
Can you PLEASE help me with this Algebra problem: In a hotel conference room, the number of chairs is 47 more than the number of people currently in the room. The total number of legs currently in this room is 938. What is the sum of the digits in the
asked by Anonymous 
Chemistry
Calculate partial pressure given ka1, pH and KH The equation given in the question was: HCO3(aq)+H3O+(aq)= CO2(aq)+H2O Calculate the partial pressure of CO2. I think you use : [H3O+] = ka1x(antilog pH)/(antilog pH) Then Henrys law: Equilibrium
asked by Seth 
Chemistry
a+bc (fast) c+d>e (slow) e>f+b (fast) How do you determine the overall equation for these reaction mechanisms?
asked by Neil 
chemistry
how many grams of sodium hydroxide is required to neutralize 73grams of hydrochloric acid and to form sodium chloride and water
asked by bala 
Business Math ( Future ordinary Annuities)
Howard has deposited RM1000 at the end of each month into a retirement savings plan for the last 10 years in his working life. His deposits earned an interest rate of 2.5% per month for the first 4 years and 3% per month for the rest of the years. What is
asked by Tracy 
Physics
A nonhomogeneous trunk, 5 meters long and 100 kilograms mass is in equilibrium and is hung at the ends by two strings; One form an angle of 37 degrees and the other an angle of 53 degrees, both with the horizontal. Determine the location of the center of
asked by Caroline 
Chemistry
Write a chemical equation for 48g of gasoeous hydrogen and 320g of gaseous oxygen yield
asked by Help 
Math Help
Explain what is meant by an experiment. Give an example. For the example you have chosen, describe (a) a sample point, (b) the sample space, and (c) an event of the experiment.
asked by Bobbie 
Office Administration
What is the abbreviation for disks that can be erased and reused
asked by Atiyya 
Math
Hot air balloons If the hot air balloon shown is in the shape of a spehere, what is it's radius? Hint: v=15,000 cubic feet.
asked by Milana 
Algebra
Can you please help with this problem: At Super Saver Mart (SSM), you can buy three packs of toilet paper and seven boxes of cereal for $46.00. You can also purchase 8 packs of toilet paper and 4 boxes of cereal for $75.00 at SSM. What is $14 more than the
asked by Leroy 
Algebra
a projectile is laucnhed from the ground level and its height can be modeled as a function of time by the equation h=4t50t^2 What are the reasonable domain and range of this problem
asked by Anonymous 
Chemistry
I just need someone to check my answers please :) On the pH scale are the following items base, neutral, or acid? 1. Hand Soap 2. Blood 3. Milk 4. Coffee 5. Orange Juice 6. Soda Pop 7. Vomit 8. Battery Acid My answers: 1. Base 2. Neutral 3. Neutral 4.
asked by Zoella 
chemistry
The edge of a bodycenteredcubic unit cell ( which contains two atoms per unit cell) of an element Y was found to be 2.16x10^8cm. The density of the metal is 19.35g*cm^3. What is the approximate molar mass of Y?
asked by John 
Geoemtry
I am given two triangles One triangle has side length of 4 and 2x+7 The other one has side length of x and 1. How do I find the lengths of the sides of these two similiar triangles
asked by Anonymous 
Math
Find the compound interest on rs 64,000 for 1 year at the rate of 10% per anum compounded quarterly. Could you please do it fast I need to give it tomorrow.
asked by Sana 
Kumar
What is the life of earth ? explain and why?
asked by Raj 
Physics
Is screw a modified inclined plane?
asked by Anonymous 
science
Na2Co3 has a mass of 2.25 grams determine the Na ions present
asked by kristoffer 
Algebra
2+5s4
asked by Rose 
Math
Let A and B be sets. Below are listed several statements involving set notation. For each case, write a statement in words that says what is written in symbols. a. A U B b. A ∩ B c. A ⊆ B d. a ∈ A e. A ∩ B = Ø
asked by Melissa 
math
F(x,y) represents a velocity field of a fluid over a surface z=63x2y.If the magnitude of the velocity in the direction of the unit normal vector,n on S is 3z/(surds14), compute the flux of F(x,y) over the surface S in the first octant oriented upward
asked by Adam 
math
two concentric circle with the ratio of radii as 2:3, what is the ratio of the area? thanks
asked by jose 
Geography
How was the earth formed?
asked by Brajesh 
algebra word problem
One year, Shannon made $288 from two investments. $1100 was invested at one yearly rate and 1800 at a rate that was higher. Find the two rates of interest.
asked by marco 
Math
A taxi charges $6+$0.20 every 1/8 of a mile.How many miles can you go on $14.00.
asked by Rhaiyne 
Algebra
Solve algebraically x^26x+9>0
asked by Anonymous 
Algebra
Find the multiplied standard form of the quadratic ax+2+bx+c=0
asked by Anonymous 
General
What can you say about the situation of science?
asked by Brajesh 
Ratan
What means society?
asked by Raj kumar 
Business
list of companies that uses decision making process?
asked by Andy 
V.i.p. Maths
Why the value of 'pi' is taken as 22/7
asked by Brajesh 
Commerce
What is accountancy?
asked by Brajesh 
Algebra
9r210
asked by Anonymous 
Math
Does there exist a fraction(s) m/n for which it is true that m/n= (m+b)/(n+b) ? If so, for which fraction(s). If not, explain why. Remember, if you say that such a fraction does exist, simply offering one example will not suffice as a full justification.
asked by Melissa Bell 
political
when there is no judicial board is there seperation of powers for political
asked by Lori 
math
What is the area of an equilateral triangle having height of 12 decimeter
asked by Rabi