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March 27, 2017

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Posts by anonymous

Total # Posts: 106,825

Math
The length of a picture frame is (8u - 12) inches. Its width is 3/4 of its length. Express the width of the picture frame in terms of u.
December 14, 2016

math
determine the equation of the graph in the form y=acos(bx)
December 14, 2016

The Value of an Annuity
you would like to have $800,000 when you retire in 35 years. How much should you invest each quarter if you can earn a rate of 6.7% compounded quarterly? a) How much should you deposit each quarter? b) How much total money will you put into the account? c) How much total ...
December 14, 2016

math
How would you justify the steepness of a slope?
December 14, 2016

can you check my answers precalculus
can you check my answers? Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) 7 + 13 + 19 + …+(6k + 1) 7 + 13 + 19 + ...+[6(k - 1) + 1] + (6k7 +1) + (...
December 14, 2016

precalculus
can you check my answers? Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) 7 + 13 + 19 + …+(6k + 1) 7 + 13 + 19 + ...+[6(k - 1) + 1] + (6k7 +1) + (...
December 14, 2016

math
659
December 14, 2016

math
659
December 14, 2016

math
The number of blocks has 9 in the ones place the number in the hundred place is one more than the number in the tens place those two numbers equal 11 how many blocks are there?
December 14, 2016

Science
How much you would weigh on the moon if you are 72 pounds on Earth
December 14, 2016

math
Jenn practiced basketball for 45% of the time Kaylee practiced. Jenn practiced for 36 minutes. How long did Kaylee practice?
December 14, 2016

language arts
ur guys r weird
December 14, 2016

precalculus
can you check my answers? Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. answer: 1 Find first differences for the sequence in order from a1 to a5. Determine whether or not the series is quadratic or not. -1, -3, -1, 5, 15 answer: -2, 2, 6, 10; ...
December 14, 2016

precalculus
Can you please check my answers? 1.Find Pk + 1 if Pk=2^K-1/k! answer: 2^k+1/(k+1)! 2.Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) answer: 7+13+9...(6k-1+1)+6k+1 +(6k+2) 3.What is the first step when writing a proof using mathematical induction? answer: Find ...
December 14, 2016

Geometry
I don't know solve it yourself
December 14, 2016

Geometry
IDK
December 14, 2016

Math
How much would you need to deposit in an account each month in order to have $20,000 in the account in 7 years? Assume the account earns 2% interest.
December 14, 2016

Finite Math
You deposit $300 each month into an account earning 8% interest compounded monthly. a) How much will you have in the account in 35 years? b) How much total money will you put into the account? c) How much total interest will you earn?
December 14, 2016

chemistry
density of sand =3.00g/cm3?
December 14, 2016

math
Jon adds the expressions 5p + 2 and 2p + 1. Carlos adds the expressions 4p + 3 and 7p + 2.
December 14, 2016

precalculus
can you check my work? Solve the system of equations at the right by the method of substitution. Verify your results by using a graphing utility. x^2+y^2-4x+6y-5=0, x+y+5=0 x=-y-5 (-y-5)^2+y^2-4(-y-5)^2+6y-5=0 y=?5-5, y=-5-?5 x+?5-5+5=0 x=-?5 x-5-?5+5=0 x=?5 y=?5-5, y=-5-?5, x...
December 14, 2016

precalculus
which equation do I graph?
December 14, 2016

precalculus
Solve the system of equations at the right by the method of substitution. Verify your results by using a graphing utility. x2+y2-4x+6y-5=0, x+y+5=0 answer: x=-y-5 (-y-5)2+y2-4(-y-5)2+6y-5=0 y=?5-5, y=-5-?5 x+?5-5+5=0 x=-?5 x-5-?5+5=0 x=?5 y=?5-5, y=-5-?5, x=-?5, x=?5 how do i ...
December 14, 2016

science
I like solution of this equation
December 14, 2016

MATH
A certain disease has an incidence rate of 0.5%. If the false negative rate is 7% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the disease.
December 14, 2016

precalculus
how do you sketch the curve represented by x=2+3cos? y=2sin? ?
December 14, 2016

precalculus
how do you sketch the curve represented by x=(?t2+2) y=t/4?
December 14, 2016

socialsss
what did the qin emperor build to make china's defence stronger
December 14, 2016

precalculus
sketch the curve represented by the parametric equations. Then eliminate and write the corresponding rectangular equation whose graph represents the curve. x=(?t2+2) y=t/4
December 14, 2016

precalculus
Can you check my work? sketch the curve represented by the parametric equations. Then eliminate and write the corresponding rectangular equation whose graph represents the curve. x=2+3cos? y=2sin? answer: cos?=x/5 sin?=y/2 cos^2? + sin^2?=1 (x/5)^2+(y/2)^2=1 (x/5)^2+(y/4)^2=1
December 14, 2016

Math
It takes 5 people 3 days to put up a fence? How many days would 3 people take?
December 14, 2016

precalculus
how do you write x=2+3cos? y=2sin? in terms of pi?
December 14, 2016

precalculus
how do you write x=(?t^2+2) in terms of pi?
December 14, 2016

precalculus
can you check my work? In exercises 10-12, sketch the curve represented by the parametric equations. Then eliminate and write the corresponding rectangular equation whose graph represents the curve. 10. x=t2-6 y=1/2t-1 answer: t=2y-6= (2y+2)2-6 =4y2+8y-2
December 14, 2016

precalculus
How do you sketch the curve reprsented by the parametric equations : x=t2-6 y=1/2t-1?
December 14, 2016

Social Studies
How did the Americans disagree over the role of federal and state governments before and during the civil war?
December 14, 2016

pure math
i) Expand (1-(x/2))1/5 ii)State the range of values of x, for which the expansion is valid
December 14, 2016

One step inequalities
Unknown number decreased by 9 is at most 27
December 14, 2016

precalculus
sketch the curve represented by the parametric equations. Then eliminate and write the corresponding rectangular equation whose graph represents the curve. x=(?t^2+2) y=t/4
December 14, 2016

precalculus
Find the polar equation r=8cos3theta, find the maximum value of lrl and any zeros of r. Verify your answers numerically. |cos3?| <= 1 cos3?=0 when 3? is an odd multiple of ?/2 what is the next step to answering the question?
December 14, 2016

Math
12 dozen (PS, a dozen means 12) would be 12*12=144. so you break 15 of 144 the problem would be 144-15= ? so how much do you have left?
December 14, 2016

Calculus
The size of a parcel despatched through the post used to be limited by the fact that the sum of its length and girth (perimeter of the cross section) must not exceed 6 feet. What was the volume of the largest parcel of square cross- section which was acceptable for posting? (...
December 14, 2016

maths
36
December 14, 2016

maths
3/4 of a number exceeds it's 1/3 by 15. Find the number
December 14, 2016

physics
What is mean by 28degree east of north
December 14, 2016

algebra
why is the alphabet shorter at christmas time
December 14, 2016

Loans
If you take out an auto loan of $4,500 at 5% interest for 24 months (2 years), what will your monthly payment be? Round your answer to the nearest cent.
December 14, 2016

SHANNON
Suppose a math class contains 31 students, 14 females (four of whom speak French) and 17 males (two of whom speak French). Compute the probability that a randomly selected student is female, given that the student speaks French.
December 14, 2016

Probability of having disease when test has false
A certain disease has an incidence rate of 0.5%. If the false negative rate is 7% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the disease.
December 14, 2016

math
126cm = x + x + 1 + x + 2 126 = 3x + 3 126 – 3 = 3x 123 = 3x 123/3 = 3x/3 41 = x The 3 consecutive sides of a triangle is 41,42 and 43.
December 14, 2016

Maths
20%
December 13, 2016

math
A basket at a baby shower contains 10 bottles of pink nail polish numbered 1 through 10, and 11 bottles of red nail polish numbered 1 through 11 one is drawn from the basket at random
December 13, 2016

Chemistry
What group of elements were not on the original periodic table
December 13, 2016

social studies
oppsss, yeah its A. Sorry for the inconvenience.
December 13, 2016

social studies
I think John Locke but I'm not sure
December 13, 2016

social studies
which Enlightenment thinker taught that life is "brutish" and societies need strong rulers? a) Thomas Hobbes. b) John Locke c) Jean-Jacques Rousseau d) Voltaire
December 13, 2016

Chemistry (PLZ HELP)
Aluminium can be produced by the thermal decomposition of aluminium oxide. What mass of aluminium would be produced from 3.5kg of aluminium oxide?
December 13, 2016

Math
Orin has driven 150 miles in the past 8 hours write an algebraic expression to show how many miles are in drove each hour
December 13, 2016

Physics
A force of 1500 N (pull) is applied to a 200-kg crate at an angle of 20 degrees above horizontal. The coefficient of static friction is .65 and the coefficient of kinetic friction is .43. Does the crate move? If so, what is its acceleration?
December 13, 2016

precalculus
Find the polar equation r=8cos3theta, find the maximum value of lrl and any zeros of r
December 13, 2016

maths
how do i make w the subject?!? 11-w/4=1-w
December 13, 2016

American Government
Consider the expressed non-legislative powers related to patents and copyrights. Why did the founding fathers include these ideas in the expressed powers of Congress? How have patents and copyrights contributed to U.S. History an identity?
December 13, 2016

American Government
How have the war powers evolved since World War II?
December 13, 2016

American Government
PLEASE HELP URGENT How has the power of congress evolved through the Necessary and Proper Clause? What role did McCulloch v. Maryland play in this evolution?
December 13, 2016

precalculus
(a)Determine the number of degrees the axis must be rotated to eliminate the xy term of the conic x2+6xy+y2-6=0. tan2? = B/(A-C) how do I answer the question?
December 13, 2016

precalculus
how many degrees does the axis need to be rotated to eliminate the xy term of the conic x2+6xy+y2-6=0.
December 13, 2016

precalculus
sketch the curve represented by the parametric equations. Then eliminate and write the corresponding rectangular equation whose graph represents the curve. 10. x=t2-6 y=1/2t-1 how do I use t = 2y+2?
December 13, 2016

precalculus
sketch the curve represented by the parametric equations. Then eliminate and write the corresponding rectangular equation whose graph represents the curve. 10. x=t2-6 y=1/2t-1
December 13, 2016

precalculus
Find the polar equation r=8cos3theta, find the maximum value of lrl and any zeros of r. Verify your answers numerically.
December 13, 2016

precalculus
Can you check my answers? find two sets of parametric equations for the given rectangular equation x+y^2=4 x=-y^2+4 y=-t^2 x=-t^2+4 x=-t^3 y=-t^3+4 Find a polar equation of an ellipse with its focus at the pole an eccentricity of e=1/4 and directrix at y=4. answer: ?(x^2 + y^2...
December 13, 2016

Random question
Thanks!
December 13, 2016

Random question
Mrs Sue please?
December 13, 2016

Random question
So im doing an experiment, putting tums in vinegar, and when i did, the tum fizzed up and bubbled and disentegrated. Would this be endothermic or exothermic. Endothermic right?
December 13, 2016

Science
A forrestry crane is lifting vertically a 2 tons log with a force F = ( 9 + 2 h) where h is the height. Draw the free body diagram with the forces and use work and energy conservation to determine the speed of the log when it has risen h=6m. Apply kinematics to give the ...
December 13, 2016

precalculus
How would you describe the graph of the conic x^2-y^2/4=1?
December 13, 2016

math
elizabeth buys a glass vase during the sale. if the original price was 12 how much does elizabeth pay .
December 13, 2016

pre calculus
can you check my work? find two sets of parametric equations for the given rectangular equation x+y^2=4 x=-y^2+4 y=-t^2 x=-t^2+4 x=-t^3 y=-t^3+4 Find a polar equation of an ellipse with its focus at the pole an eccentricity of e=1/4 and directrix at y=4. answer: ?(x^2 + y^2...
December 13, 2016

precalculus
can you check my work? Find a polar equation of a hyperbola with its focus at the pole, an eccentricity of e=5/4 and directrix at y=2. answer: r=ek/1+esintheta r=(5/4*2)/1+5/4sin theta r=5/2(1+(5sintheta)/4)
December 13, 2016

precalculus
.(a)Determine the number of degrees the axis must be rotated to eliminate the xy term of the conic x2+6xy+y2-6=0. (b)Graph the conic in part a and use a graphing utility to confirm your result.
December 13, 2016

precalculus
will someone please check my work? find two sets of parametric equations for the given rectangular equation x+y^2=4 x=-y^2+4 y=-t^2 x=-t^2+4 x=-t^3 y=-t^3+4 Find a polar equation of an ellipse with its focus at the pole an eccentricity of e=1/4 and directrix at y=4. answer: ?(...
December 13, 2016

precalculus
find two sets of parametric equations for the given rectangular equation x+y^2=4 can you check my work? x=-y^2+4 y=-t^2 x=-t^2+4 x=-t^3 y=-t^3+4
December 13, 2016

precalculus
can you check my work? Find a polar equation of an ellipse with its focus at the pole an eccentricity of e=1/4 and directrix at y=4. answer: ?(x^2 + y^2) / (y - 4) = 1/4 4?(x^2 + y^2) = y - 4 4r = r sin ? - 4 (sin ? - 4) r = 4 r = 4/(sin ? - 4)
December 13, 2016

precalculus
Find the polar equation r=8cos3theta, find the maximum value of lrl and any zeros of r. Verify your answers numerically.
December 13, 2016

precalculus
Find a polar equation of a hyperbola with its focus at the pole, an eccentricity of e=5/4 and directrix at y=2.
December 13, 2016

precalculus
6.Find the standard form of the equation of the hyperbola with vertices (0±3) and asymptotes (y=±3/2x)
December 13, 2016

Math
1. A box of crackers has a mass of p kilograms. When empty, the box has a mass of 200 grams. What is the total mass of the crackers in 5 such boxes? Express your answer in kilograms. (seems to me like the empty box part of this is there just to throw you off. Isn't the ...
December 13, 2016

Statitu
Assuming that boys and girls are equally probable find the number of families out of 1600 families each having 5 children, with 3 boys
December 13, 2016

Math
Susan picked a squash that weighed 8/15 lb. Larry picked a squash that weighed 1/4 as much as susan's squash. How much did larry'squash weigh?
December 12, 2016

precalculus
Find the standard form of the equation of the hyperbola with vertices (0±3) and asymptotes (y=±3/2x)
December 12, 2016

physics
bgvfy
December 12, 2016

science
Calculate the molarity of 500 ml of a solution containing 100 grams of glucose (C6H12O6).
December 12, 2016

math
is it possible for system of two linear equations to have no solution.
December 12, 2016

precalculus
Find the standard form of the equation of the hyperbola with vertices (0±3) and asymptotes (y=±3/2x)
December 12, 2016

Algebra
My teacher told me the answer was no solution but I dont know how she got it
December 12, 2016

Algebra
I thought you dont distribute with absolute value
December 12, 2016

Algebra
How is 9|r-2| < -73 no solutions
December 12, 2016

precalculus
find two sets of parametric equations for the given rectangular equation x+y^2=4
December 12, 2016

precaculus
Convert the rectangular coordinate (2,-2) to polar form and find two additional representations of this point. Can you check my work and explain how to finish the question? r=?(2)2+(-2)2 r=2?2 tan theta = (-2)/2 theta = -1 polar coordinate= (2?2, -1)
December 12, 2016

Algebra
|1-4k| is greater than or equal to -11 How is the answer ALl real numbers
December 12, 2016

precalculus
find two sets of parametric equations for the given rectangular equation. x^2+4y^2-16=0
December 12, 2016

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