# 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**

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**

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*

**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*