# Posts by Anonymous

Total # Posts: 106,675

**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*

**Calculus**

(a) Compute the area of the bounded region enclosed by the curve y = e^x, the line y = 12, and the y-axis. (b) How does this area compare with the value of the integral ? from 1 to 12 of (ln x dx)? Explain your answer. (A picture may be helpful.)

*December 12, 2016*

**precalculus**

Can you check my work? find two sets of parametric equations for the given rectangular equation x+y^2=4 answer: x=-y^2+4 x=-t y=-t^2+4 x=-t^3 y=-t^3+4

*December 12, 2016*

**Business**

Calculation of yield to maturity: Yield to maturity = (C + ((F-P)/n))*2 / ((F+P)/2) F = Face value = $ 1000 C = Semiannual Coupon Payment = Face value * Coupon rate = $1000*3% = $30 P = Price = $875 n = number of semiannual = 10 years *2 = 20 Semiannual Yield to maturity = (...

*December 12, 2016*

**Physics**

A book with a mass of 1350 g is sitting on a desk. The ukf between the book and the desk is .45 and the ukf between the book and the desk is .30. a. how much horizontal force is required to start the book moving across the desk? b. Once it starts moving, what is the ...

*December 12, 2016*

**precalculus**

find two sets of parametric equations for the given rectangular equation x+y^2=4

*December 12, 2016*

**English**

Compare the attitudes of warfare in 'Charge Of The Light Brigade' and 'Bayonet Charge.'

*December 12, 2016*

**precalculus**

.Find the standard form of the equation of the parabola with focus(8,-2) and directrix x=4

*December 12, 2016*

**precalculus**

can you check my work I really do not understand. Find the standard form of the equation of the parabola with focus(8,-2) and directrix x=4. answer= (y+2)^2=-16(x-12/8)

*December 12, 2016*

**precalculus**

Is this right? Convert the polar coordinate (-14, 5pi/3) to rectangular form. Does it mean rectangular coordinates and if so can you check my work? answer: r=-14 theta=5pi/3 x=-14 cos 5pi/3 x=-14(0.5) x=-7 y=rsintheta y=-14 sin 5pi/3 y=-14(-0.866) y=12.124 (-7,12.124)

*December 12, 2016*

**pre calculus**

can you check my work Find two different sets of parametric equations for the given rectangular equation: y=x^2+10 answer: x=t y=t^2+10 x=t^3 y=t^6+10

*December 12, 2016*

**Calculus**

(a) Compute the area of the bounded region enclosed by the curve y = e^x, the line y = 12, and the y-axis. (b) How does this area compare with the value of the integral ?1-12(ln x dx)? Explain your answer. (A picture may be helpful.)

*December 12, 2016*

**precalculus**

graph r = cos 5? + n cos ?, 0 ? ? ? ? For the integers n = -5 to n = 5. I do not understand this question at all. Can you use a similiar example to explain how I would solve this question?

*December 12, 2016*

**precalculus**

for the question graph r = cos 5? + n cos ?, 0 ? ? ? ? For the integers n = -5 to n = 5. Does this mean that -5,-4,-3,-2,-1,0,1,2,3,4, and 5 are all on the same graph? I really do not understand polar graphs any help would be much appreciated.

*December 12, 2016*

**pre calculus**

How would I graph r = cos 5? + n cos ?, 0 ? ? ? ? For the integers n = -5 to n = 5. ?

*December 12, 2016*

**Science**

A 1750 kg van is travelling down a 10 degrees inclined road at a speed of 6 m/s. If the driver brakes suddenly causing the wheels to lock, determine the distance L his tyres will skid on the road. The coefficient of kinetic friction between the wheels and the road is ?k=0.5. (...

*December 12, 2016*

**Physics**

58.28%

*December 12, 2016*

**science**

teri aesi ki tesi

*December 11, 2016*

**science**

A 12m tall tree to be photographs with pin hole camera it is situated 15 m away from camera how far should screen place from pin hole camera to obtain 15m tall image of tree

*December 11, 2016*

**math**

if Mindy has a 20 minute walk to school and she stops for a hotdog that takes 5 minutes to cook how long will it take for her to get to school?

*December 11, 2016*

**physics**

a force of 400 N at an angle of 15 degrees above horizontal is needed to pull a 180 kg trunk across the floor at constant speed. what is the coefficient of kinetic friction between the trunk and the floor

*December 11, 2016*

**Physics**

A force of 400 N at an angle of 15 degrees above the horizontal is needed to pull a 180 kg trunk across the floor at constant speed. What is the coefficient of kinetic friction between the trunk and the floor?

*December 11, 2016*

**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 A. 2h^2-3h+63=0 B.2h^2-3h-63=0 C.2h^2-3h+252=0 D.2h^2-3h-252=0 I think it's D?

*December 11, 2016*

**precalculus**

can you check my work Given: r = 4/-2-6sintheta What is the eccentricity of the function? r = 4/-2-6sintheta r=4/8sin theta r=2sintheta the eccentricity is 2

*December 11, 2016*

**Algebra**

I got 4i square root of 8 over 4 So is the answer c

*December 11, 2016*

**Algebra**

HOw do i apply quadratic if there isnt a b

*December 11, 2016*

**Algebra**

After it says choose the correct solution(s) x=-8 x= plus or minus square root of 8 x= plus or minus2isquareroot of 2 x= plus or minus8i

*December 11, 2016*

**Algebra**

Name two ways to solve for y=2x^2+16

*December 11, 2016*

**precalculus**

what is the formula for finding the distance between the pole and the directrix?

*December 11, 2016*

**precalculus**

what is the formula for finding the eccentricity of r=4/-2-costheta and can you explain how to use it?

*December 11, 2016*

**precalculus**

can you please explain how you determine the type of directrix a conic has?

*December 11, 2016*

**precalculus**

can you please explain how to find the distance between the pole and directrix?

*December 11, 2016*

**precalculus**

can you explain how you find the eccentricity of r=4/-2-costheta?

*December 11, 2016*

**Geoemtry**

The two x's inside the center frame

*December 11, 2016*

**Geoemtry**

A picture frame has a square picture in the center of the frame, the top and bottom borders are each 2 inches wide and the left and right borders are each 4 inches wide. What is the value of x if the total area of the picture frame is 65.25 inches

*December 11, 2016*

**interior decoration**

Which one of the following fabrics is most suited to a formal setting? A. Silk C. Cotton B. Wool D. Linen

*December 11, 2016*

**Algebra**

How do you get that

*December 11, 2016*

**Algebra**

-12greater than or equal to x^(2)+8x

*December 11, 2016*

**algebra**

Write the equation of a line that is perpendicular to the line x = -5 and passes through the point (-3,-7)

*December 11, 2016*

**algebra**

Ms. Easty picked up 3 doughnuts and 4 coffees and paid $4.91. Mrs. martin picked up 5 doughnuts and 6 coffees at the same shop and paid $7.59. How much did 1 doughnut cost? How much did 1 coffee cost?

*December 11, 2016*

**algebra 1**

(-5,-7)????

*December 11, 2016*

**algebra 1**

Write the equation of a line that is perpendicular to the line x = -5 and passes through the point (-3,-7)

*December 11, 2016*

**Chemistry**

Why do carbonated beverages go "flat" when opened and left and room temperature and pressure?

*December 11, 2016*

**Chemistry (PLZ HELP)**

State why you think clothes might be important to clean in hot water. Is it because it has to do with solubility or something?

*December 11, 2016*

**math**

Write the formula for the volume of a rectangular prism, and the formula of a pyramid. And then add both of them together, first by figuring out how many sides the milk carton has and all that

*December 11, 2016*

**algebra 1**

A rectangular piece of cardboard has a perimeter of 88 cm. The length of the rectangle is 8 cm longer than three times the width. Find the length and width of the rectangle.

*December 11, 2016*

**algebra 1**

Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

*December 11, 2016*

**algebra**

Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

*December 11, 2016*

**algerbra**

What value of X makes 11 the square root of 37x equal to 44 the square root of 37 ?

*December 11, 2016*

**math**

Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?

*December 11, 2016*

**algerbra**

For what value of X can the expression Square root of 55X be further simplified?

*December 11, 2016*

**math**

8 feet

*December 11, 2016*

**Math equation**

I've won 556 games and tied 4 games and lost 228 games what is my percentage of wins

*December 11, 2016*

**math**

3/5 are girls,200 is no.of boys what is total no. of students

*December 11, 2016*

**Math**

Express in meters and centimeters 2.52cm

*December 11, 2016*

**Java programming**

Can you please post the full question

*December 11, 2016*

**Physics**

Is screw a modified inclined plane?

*December 10, 2016*

**Geoemtry**

I know I use proportions but Im stuck

*December 10, 2016*

**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

*December 10, 2016*

**Algebra**

I dont understand it bc I dont get the question Is it ax+by=x

*December 10, 2016*

**Algebra**

Find the multiplied standard form of the quadratic ax+2+bx+c=0

*December 10, 2016*

**Algebra**

Solve algebraically x^2-6x+9>0

*December 10, 2016*

**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?

*December 10, 2016*

**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

*December 10, 2016*

**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)=50-4.9t^2 How long is the ball in the air before it hits the ground

*December 10, 2016*

**algebra**

127.5?

*December 10, 2016*

**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

*December 10, 2016*

**Algebra**

When I type it into a calculator online it says it is no solution but I am confused on why that is First thing I did was add 10 to the other side so I got -63 Then I did 9|r-2|<-63 or 9|r-2|<63 Next I divide 9 and got -7 on one and 7 on the other and then added 2 so I ...

*December 10, 2016*

**Algebra**

9|r-2|-10<-73 r<-5 r<9

*December 10, 2016*