# Posts by Marysvoice

Total # Posts: 69

Algebra
Thank you. I hope you are compensated well to put up with English majoring who don't enjoy math :)

Algebra
To simplify = (a^2)7/8?

Algebra
Multiply (a+1/2)(a+1/4) 1.25a? or 1 1/4a ?

Algebra Check
TYPO the exponent is -5/6

Algebra Check
Rewrite the following expression with positive exponents (16xy)^5/6 = 1/(16xy)^5/6?

Algebra
sqrt u - sqrt v/sqrt u + sqrt v = u-2 sqrt uv+v / sqrt u-v ?

Algebra
Thank you

Math- consecutive intigers
I am over tired. I need coffee. I was looking for the product. I must need pages 40 and 41 or 40x41=1640.

Math- consecutive intigers
I am over tired. I need coffee. I was looking for the product. I must need pages 40 and 41 or 40x41=1640.

Math- consecutive intigers
A student opens a math book to two consecutive pages with a sum of 1640. What are the two pages? I would need one odd number and one even. 819 and 820 are as close as I can come. What am I missing?

Length and width
You are right. I should sleep and try again later. I am starting to make silly mistakes.

Length and width
The width of a rectangle is 2ft less than its length. The area is 8ft^2. Find the length and width. I can't seem to come up with anything that equals 64 sq ft. Do I start with area 64sqft.=W x L-2. I feel like I should be coming up with something around 7 times 9 but I can...

Get it ?

Math- Algebra
This one showed up in the middle of my quadratic equations. There is no y or 0. What am I supposed to do with it? Give exact and approximate solutions to three decimal places. (x+5)^2=81

How do I write my x intercepts as an ordered pair when my X-Intercepts at X = { 2.64575, -2.64575 }?

Math
So I am wrong? It is 400 instead of 800 sq ft?

Math
I am working with quadratic equations this week. Honestly, I drew a picture and made a logical guess.

Math
A farmer decides to enclose a rectangular garden, using the side of a barn as one side of the rectangle. What is the maximum area that the farmer can enclose with 80ft of fence? 800 sq ft? What should the dimensions of the garden be to give this area? 40ft is given so I ...

If you are looking at a graph of a quadrtic equation, how do you determine where the solutions are?

How do you get 1.333x+17.697 and 1.333x+0.444+17.253 and (x-0.667)^2+17.53?

The question is- Aki’s Bicycle Designs has determined that when x hundred bicycles are built, the average cost per bicycle is given by C(x) = 0.6x^2-0.8x+10.618, where C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per...

I apologize for my silly question. I followed your advice, revised my question and found my answer. Thank you.

Building a rectangular room with fixed perimeter of 280ft what dimentions would yield the maximum area? What dimentions would yeild the minimum area?

Cool rule, thank you.

Thank you for the example.

Thank you.

What are the pros and cons of completing the square as a way to solve quadradic equations?

When a quadratic equation has one solution, there will be one x-intercept; when there are two solutions, there will be two x-intercepts and when the equation has no solution, the graph will have no x-intercepts",is there another way of determining this?

Got it. Thank you

OK. I think I have my head around most of this but for one question. I have plotted a graph with the quadratic equation tickets=-02x^2+12x+11. My graph opens down and shows I will sell tickets for 60 days peaking at the vertex at 30 days where I sell 191 tickets. Now I have to...

This is the first step. I will need to answer a series of questions such as a. Does the grapgh of this equation open up or down? How did you determine this? So I will need to graph it.

I need to provide a quadratic equation that models the number of expected tickets sold each day x. (x=1 is the day tickets go one sale). tickets=-0.2x^2+12x+11

Thank you, I will.

I am supposed to write a quadratic equation in the varible x having the given numbers as solutions. Type the equation in standard ax^2+bx+c=0 my solution is 1, only one solution. The equation is __________=0?

Speed and distance
I GOT IT!!!!! THANK YOU!!! THANK YOU!!! THANK YOU!!!

Speed and distance
I can't figure this one out During a trip, a canoe travles 47 miles at r speed. The second part of the trip the canoe travels 9 miles, but 5 mph slower. The total trip is 5 hrs. What is the speed of each part of the trip? I start with 47/r+9/r-5=5hrs Then I multiply both ...

Algebra distance problem

Algebra distance problem
I can't figure this one out During a trip, a canoe travles 47 miles at r speed. The second part of the trip the canoe travels 9 miles, but 5 mph slower. The total trip is 5 hrs. What is the speed of each part of the trip? I start with 47/r+9/r-5=5hrs Then I multiply both ...

I am trying to define the different appraoches to solving quadratic equations. My book says using quadratic formula, completing the sqaure and factoring. I thought completing the square would be by facotring? How are these two different?

Algebra
Which is the easiest way to figure a quadratic equation; graphing, quadratic formula, completing a square and factoring?

Algebra
Wow! I have a lot to learn. I don't mean to take up your time, but I understand there is more than one way to solve quadratic equations. Is there a way you think is easier and how?

Algebra
Is it possible to have diferent quadratic equations with the same solution? My instinct says yes, my fear of math says no.

Algebra
How do you find quadratic equations if you are only gven the solution?

Algebra
Multiplying sq rts sqrt18a^7b times sqrt27a^8b^6 Jake 1214- 18 = 9 * 2 then sqrt 18 = 3sqrt2 sqrt a^7 = a^3 * sqrt a 27 = 9 * 3 then sqrt 27 = 3 sqrt3 sqrt a^8 = a^4 sqrt b^6 = b^3 Now just multiply the like-terms together. 3sqrt6 and sqrt2a^4?

Algebra
3sqrt6 and sqrt2a^4

Algebra
multiplying sq rts sqrt18a^7b times sqrt27a^8b^6 I think I need to collect like terms such as the a's and b's. My big problem is order of operations. Every problem I do looks so different.

Algebra
That makes sense. So not so much the wieghtof the object but how high above or below sea level the object was. A mile is still 5280 I am guessing so if I have an object in Death Valley is my given example, (its not a even numbered question so I don't have to do it but I ...

Algebra
Thank you drwls. I was not reading my own question clearly. I am trying to make the equation true for an object that is 100 pounds at sea level. Find the vlaue of C that makes the equation true. wouldn't C, being the contant, be where I put my 100 pounds?

Algebra
Thank you bobpursley. In question 2, if sea level is 3963 miles from the center of the earth can I change the equation to figure out the weight of a 100 pound weight at lea level by doing something like this? 100=sqrt C/3963^2 ?

Algebra
I was given an answer to a question but what I really need are the steps to get there as I have other questions I need to answer the same way. Solve the equation w=Cr^-2 for r I was given r=C/w This equation is meant to figure out the weight of an object where C is a constant ...

Response to DWRLS
I am still on this weight and elevation question. w=Cr^2 for r= r= quare root c/w Suppose that an object is 100 pounds at sea level. find the vlaue of C tat makes sense. Sea level is 3963 miles from the center of the earth. Wouldn't this be 100=C/(3963)^2 C=(3963)^2x100?

Algebra
I am still on this weight and elevation question. w=Cr^2 for r= r= quare root c/w Suppose that an object is 100 pounds at sea level. find the vlaue of C tat makes sense. Sea level is 3963 miles from the center of the earth. Wouldn't this be 100=C/(3963)^2 C=(3963)^2x100?

Algebra
If 100=square root C/3963^2 Then C=1.352 * 10^9lb * mile^2= 1.352^9 X 2,787,840=3,769,159.6?

Algebra Word problem
so- D/1.2=the square root h Long's Peak in the rocky mountains is 14,255 feet I need to get the number of miles 5280 or 2.7 miles? then divide that by 1.2 or 2.25 miles?

Algebra Word problem
I don't know how to put in a square root symbol here so know that it is over h. The equation D=1.2 square root h gives the distance D in miles that a person can see to the horizon from a height h in feet. Solve for h. Do I find the square root of 1.2?

Algebra
w=Cr^-2 Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the earth.)

Algebra
Solve the equation w=Cr^-2 The weight of an object follows this equation. Where C is a constant, and r is the distance that the object is from the center of the earth. There are too many variables for me to know where to begin. Can someone get me started?

Algebra
12z+3z=15z?

Algebra
I am supposed to subtract and simplify if possible. This is backward to what we had in our homework so I am confused. two fractions 4-z/z-3 minus 7z-6/3-z I need to determine what z is?

Algebra
Yes of course. Math is not my strongest subject.

Algebra
My guess was adding -7 to 1 to get -8

Algebra
Solve s+ 7/s =-8 the solutions are_,_ Could it be -1 and 7?

Algebra
1280v^9y^5/ 100v^4y3 Simplify by removing the factor of 1. 128v^5y^2/10vy ?

Algebra
Divide and simplify The problem looks too easy to be simple 6/s divided by 24/s Is it just 4s? or Do I invert and get 6/24 or 1/4? Do I leave the s in there?

Algebra
-9+3w/11 divided by 25w-75/121 Do I need a Common denominator? Would it be 121 as 11x11 is 121? Do I then multiply the numeratos- -9+3w by 11 or do I do the addition of -9+3w for-12w?

Algebra
128v^54y-1/10v^4y^3???

Algebra
1280v^9y^5/ 100v^4y3 Simplify by removing the factor of 1. Do I look forthe commom multiple or no? Do I factor out again and then cancel off?

Algebra
Simplify by removing the factor of 1 y^2-7y+6/ y^2+8y-9 I need to LCD? y^2 Then I divide the denominator into the numerator? Then I simplify?

Algebra II
I think I need to go backward for my answers. starting with c. As I am no good at math I have to guess I am wrong. Can I get some guidence on how to set up the problem? To estimate animal populations, biologists count the total number of animals in a small section of a habitat...

1. Pages:
2. 1

Post a New Question