Saturday

October 22, 2016
Number of results: 4,609

**Math **

A right triangle is formed by the origin and the x and y intercepts of the line 14x+7y=56. Find the area of the triangle. I know that Area of a triangle is 1/2bh, but how do I find the base and height? Thank you.

*November 28, 2015 by Katie *

**trigonometry**

1) show that: 1-cos2t divided by sin2t= TANt 2) show that: 1-(cos2t divided by (cos x cos)t)= (TAN x TAN)t

*January 28, 2009 by Craig*

**college algebra**

A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.) x^3 + 3x^2 − 14x − 20 = 0; {−5}

*November 18, 2013 by Dee*

**Algebra II**

The problem is 5x to the 3rd times (7x)squared. I multiplied (7x)(7x) first and got x squared + 14x + 49. Then I multiplied each of those by 5x to the 3rd and came up with an answer of: 5x to the 5th + 70x to the 4th + 245x to the 3rd. Did I get this one correct??

*February 3, 2008 by Lucy*

**math help urgent**

what di di do wrong in this??? the question is: x-8y=18 -16x+16y=-8 i did : first multiplied the first equation with 2 then 2x-16y=36 -16+16y=-8 ----------- -14x=28 x=28/-14 x=-2 now x-8y=18 (-2)-8y=18 -8y=18+2 -8y=20 y=20/-8 y= 2.5 plz help me what did i do wrong??

*January 7, 2009 by Anonymous*

**Math-6/7**

Eli purchases a container of punch that when mixed with water, makes 640 ounces of punch. Eli has 8 ounce drinking glasses. She assumes that each person will drink 2 glasses of punch. How many people can be served with one container if punch? I said 640 divided by 8 equals 80 ...

*October 10, 2015 by Versace*

**Algebra**

I'm not sure how to solve these problems. Simplify (3xsquare - 2x)divided by 15x - 10 Subtract (2y/x-y) - 5x/4y Solve (27/x) = (8 - 5/x) Simplify (7m^7n^4/8m) divided by (9m^2n^9/5n^2) 1) 3x^2 - 2x/ 15x - 10 factorize both the numerator and denominator x(3x-2)/ 5(3x-2) = x/5 (...

*November 5, 2006 by Sandra*

**5th Grade Math**

I cannot get my brain around questions like this: 1/4 divided by 2/5 = 2/4 x ? I have 4 problems like this and even the example doesn't make sense - I may have copied it wrong off of the board. Can anyone help? Thank you! You invert the second fraction and then just multiply. ...

*April 23, 2007 by Kathleen*

**Math**

1/why can 0 be divided by any number , but any number cann't be divided by 0? Answer: I don't know.. 2/ Mr. Cruz is planning to give each of his students 2 pencils for their math test . Pencils come in packs of 8 . If he has 32 students ,can he open enough packs to give all ...

*October 19, 2014 by Nnh*

**English**

Can you please check these sentences for me please? Thank you. 1 Puritans was the name given to the more (most?) extreme Protestants within the Church of England. 2)Charles I's reign was characterized by the continuous conflict with the Parliament. Puritans held a ...

*March 4, 2011 by Mike*

**calc**

Given the position function, s of t equals negative t cubed divided by 3 plus 13 times t squared divided by 2 minus 30 times t, between t = 0 and t = 9, where s is given in feet and t is measured in seconds, find the interval in seconds where the particle is moving to the ...

*January 8, 2016 by Mel*

**math**

Mrs.Chavez is on an 8-kilometer hike. She wants to reach the halfway point of the hike in 3 hours. She plans to hike 1.5 kilometers the first hour and 1.5 kilometers the second hour. What could she do to determine how far she should hike in the third hour? A.add 1.5 to 8 and ...

*February 22, 2012 by Colton*

**algebra**

Can someone correct them 9)Science:Jose rode his trail bike for 10miles. two-thirds of the distnace was over a mountain trail. How long is the mountain trail? My answer: 2/3-10=9 miles 10) perform the indicated operations 3 and 3/4 (divided by ) 1 and 3/8 My answer:2.72 9) 2/3...

*November 24, 2006 by Jasmine 20*

**Longitudinal wave problem (tunning fork)**

I have this for a physics question A 320 hz tuning fork vibrates for 8s. During this time each tine of the fork travels a total distance of 10.3 cm. first I multiplied 320 by 8.( 2 560) then i divided 10.3 by 2 560. then i divided that answer by 4 since there are four ...

*May 10, 2009 by ME*

**math**

Leah has two same size rectangles divided into the same number of equal parts.One rectangle has 1/3 of the parts shaded,and the other has 2/5 of the parts shaded.What is the least number of parts into which both rectangles could be divided?

*January 5, 2015 by Samuel Reingold*

**Math-find roots**

1.One root of each equation below is the same for both equations. what is this root? a.3x^4 + 14x^3 + 8x^2=0 b.18x^4 - 50x^2=0 2. Find the other roots of each equation in question 1

*May 30, 2012 by Sasha*

**Math**

Simplify by taking roots of the numerator and the demoninator. Assume that all expressions under radicals represent positive numbers. The square root of 243x^6/y^20 to the fifth root. Here is what I have so far: the square root of 243x^6 to the fifth root divided by the square...

*May 21, 2010 by B.B.*

**math**

12 times x =144 does(12 times x)divided 4 =144 divided by 4

*October 29, 2012 by susie*

**algebra**

The Length of time (T) in seconds it takes the pendulum of a clock to swint through one complete cycle is given by the formula T=2pie square root of 7 divided by 32 where L is the length in feet, of the pendulum, and pie is approximately 22 divided by 7. How long must the ...

*April 16, 2011 by Carolyn*

**Math**

The length of time (T) in seconds it takes the pendulum of a clock to swing through one complete cycle is givenby the formula T=2pi square root of L divided by 32 where L is the length in feet, of the pendulum, and pi is approximately 22 divided by 7. How long must the ...

*April 16, 2011 by Carolyn*

**Mathematics**

what is (5 3/5 divided by 1 5/9) - (1 1/5) squared? what is (five and three over five divided by one and five over nine) minus (one and one over five) squared? the answer is suppose to be 2 4/25 (two and four over twenty-five) but I'm not sure how to work out the second part ...

*October 1, 2009 by kerry-ann*

**algebra**

a factory can produce two products, x and y with a profit approximated by P=14x+22y-900. the production of y can exceed x by no more than 100 units moreover production levels are limited by the formula x+2y,+1,400. what production levels yield maximum profit?

*January 4, 2013 by anonymous*

**Algebra **

a factory can produce two products, x and y with a profit approximated by P=14x+22y-900. the production of y can exceed x by no more than 100 units moreover production levels are limited by the formula x+2y,+1,400. what production levels yield maximum profit?

*December 27, 2015 by HELP!!!*

**Algebra**

The volume in cubic feet of a box can be expressed as (x)=x^3-6x^2=8x￼ , or as the product of three linear factors with integer coefficients. The width of the box is x-2.
Factor the polynomial to find linear expressions for the height and the length. Show ...

*March 17, 2015 by Ciaria *

**Algebra Question~!**

Suppose you divide a polynomial by a binomial. How do you know if the binomial is a factor of the polynomial? Create a sample problem that has a binomial which IS a factor of the polynomial being divided, and another problem that has a binomial which is not a factor of the ...

*April 2, 2014 by Gabby*

**math**

Adam drew two same size rectangles and divided them into the same number of equal parts.He shaded one third of one rectangle and one forth of the other rectangle.What is the least number of parts into which both rectangles could be divided?

*January 29, 2015 by Emily *

**Math**

If the larger of two numbers is divided by the smaller, the quotient and the remainder are 2 each. If 5 times the smaller number is divided by the larger, the quotient and the remainder are still 2 each. find the two numbers.

*May 12, 2012 by Arshia*

**math**

parallel and perpendicular lines Determine an equation of each of the following lines . *the line perpendicular to y-4=0 and passing through the point (-1,6) ** the line perpendicular to 3x-12y+16=0 and having the same y-intercept as the line 14x-13y-52=0 and explain ....

*January 8, 2008 by mota*

**precalculus**

hi! The question is: a.)identify any horizontal and vertical asymptote and (b) identidify any holes in the graph. Verify your answers numerically by creating a table of values. 14.) f(x)= 3/(x-2)^3 16.) f(x)= x^2+2x+1)/2x^2-x-3 18.) 3-14x-5x^2)/3+7x+2x^2 I'm not looking for ...

*December 13, 2014 by Kelsi*

**MATH**

3 divided by 7 turned into a fraction and 4 divided by 9 turned into a fraction and 1 divided by 5 turned into a fraction

*March 5, 2012 by consquela*

**high school (math)**

Match the mathematical expression with its translation. 1. the product of two numbers 2. y divided by x 3. six less than a number is y 4. x subtracted from y 5. the sum of two numbers is six 6. x minus y 7. the sum of x and y 8. x divided by y 9. six times a number equals y 10...

*December 21, 2010 by hope*

**Maths**

I'm really struggling with word problems right now. Got through 20 just three left. Can someone please give me some pointers or the first few steps? 1. A sum of money is divided between A, B and C in the ratio 1 : 2 : 3. However, before the money is divided C dies and it is ...

*April 19, 2010 by Sindy*

**math**

x^3 + 4x^2 + 14x + 20 use the root or zero feature of a graphing utility to approximate the zeros of the function accurate to three decimal places. I do not know how to use the root or zero feature on my calculator. If someone could just explain how to do it that would be great.

*August 20, 2009 by Hannah*

**Algebra**

Which method(s) can you use to solve -2/3c = 16 multiply each side by -2/3 multiply each side by -3/2 divided each side by -2/3 multiply each side by 3, then divided each side by -2

*November 29, 2015 by anwar*

**math**

Let the equation of a circle be x^2+y^2-14x+8y+56 a. Find the standard form of the circle b. Find the center of the circle c. Find the radius of the circle

*June 4, 2015 by Anonymous*

**Math Check**

Can someone check my answers? Thanks! Tell whether the system is inconsistent OR dependent. 1.) -7x+6y=-4 14x-12y=8 2.) 3x-y=7 -6x+2y=8 My answers: 1.) inconsistent 2.) Dependent

*March 3, 2015 by Fee*

**Geometry**

Alonso can't decide which size pizza to order. The 10-inch cheese and sausage pizza is $7.99, while the 12-inch deluxe is $8.99. The dimensions given are the diameters of the pizzas. If he gets the 10-inch pizza, the total price will be divided among 3 people. If he chooses ...

*November 22, 2009 by aleah*

**math**

Alonso can't decide which size pizza to order. The 10-inch cheese and sausage pizza is $7.99, while the 12-inch deluxe is $8.99. The dimensions given are the diameters of the pizzas. If he gets the 10-inch pizza, the total price will be divided among 3 people. If he chooses ...

*December 20, 2009 by kate*

**Math**

I am having probl w/word problems. A kitchen floor is covered w/altern black and white tiles. Ech tile is a 12 inch square. If the kitchen meas 10'x10' how many black tiles are on the floor? Is this right 10 x 10= 100' 100' x12= 1200" 1200 divided by 12= 100 100 divided by 2= ...

*September 17, 2008 by Hope*

**Math**

Part 1: Suppose you divide a polynomial by a binomial. How do you know if the binomial is a factor of the polynomial? Create a sample problem that has a binomial which IS a factor of the polynomial being divided, and another problem that has a binomial which is NOT a factor of...

*April 27, 2015 by Help?*

**math 117/algebra**

simplify comples fractions. w+3/4w-----w-3/2w it is w-3 over 4w over w-3 over 2w q/f divided by t/u is the same as q/f multiplied by u/t, or qu/ft Division is the reciprocal of multiplication. q/f divided by t/u is the same as q/f multiplied by u/t, or qu/ft Division is the ...

*July 11, 2007 by Diana*

**Math**

The table shows the number of classrooms needed for different numbers of students. Total Students Classrooms 66 3 110 5 154 7 220 10 What is the relationship between Total Students and Classrooms? A.Classrooms=Total Students divided 33 B.Classrooms=Toal Students subtract 63 C....

*February 21, 2012 by Colton*

**Grade 12 Calculus **

Evaluate each of the following. Show all your calculations. a) f'(3) if f(x) = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (1) if f(X) = −3x^2 − 5x + 7 d)f" (−3) if f(x) = 4x^3 &#...

*April 15, 2013 by mandy*

**Math word problem**

Alonso can't decide which size pizza to order. The 10-inch cheese and sausage pizza is $7.99, while the 12-inch deluxe is $8.99. The dimensions given are the diameters of the pizzas. If he gets the 10-inch pizza, the total price will be divided among 3 people. If he chooses ...

*December 4, 2009 by Lyndse*

**calculus**

Difference Quotient of 2x/x-1 2(x+h)/(x+h)-1 - 2x/x-1 all divided by h 2x+2h/x+h-1 - 2x/x-1 all divided by h 2x cancels out x cancels out 1 cancels out (2h/h)/h 2h cancels with h result: 2/h

*August 22, 2008 by ANswer Check*

**Physics**

please check these: which of the following is an example of a vector quantity? a. velocity b. temperature c. volume d. mass i picked A identify as vecor or scalar 1. speed of a snail---vector 2. the time it takes to run a mile-scal 3. the free-fall accleration---vector 3. ...

*January 31, 2009 by y912f*

**Math**

Part 1: Suppose you divide a polynomial by a binomial. How do you know if the binomial is a factor of the polynomial? Create a sample problem that has a binomial which IS a factor of the polynomial being divided, and another problem that has a binomial which is NOT a factor of...

*April 27, 2015 by Tiana*

**math**

If x unit of a product cost C dollars to manufacture and earn revenue of R dollars, the value of X where the expression for C and R are equal is called break-even quantity, the number of units that produce zero profit. Find the break-even quantity when c=14X+48000 and R=18X

*March 25, 2015 by Mary*

**geometry again again again again**

If angle AFB= 8x-6 and angle BFC= 14x +8, find the value of x so that angle AFC is a right angle.

*September 27, 2009 by Monique N.*

**Zero and Negative Exponents- Algebra**

I need help with the following: What is the simplified form of 3a^4b^-2c^3? (1 point) What is –a^-2 if a=-5? (1 point) What is the simplified form of –(14x)^0y^-7z? (1 point) What is (-m)^-3n if m=2 and n=-24? (1 point)

*February 3, 2014 by Gabby*

**Math**

(2x-1)(3x-7)(4x+3) =6x^2-14x-33x+7 =(6x^2-19x+7)(4x+3) =24x^3+18x^2-126x+28x+21 =24x^3+18x^2-88x+21 <-- my answer but the correct answer is 24x^3-50x^2-23x+21 please correct me? thank you!

*December 13, 2014 by Anonymous*

**algebra--1 question**

Suppose you divide a polynomial by a binomial. How do you know if the binomial is a factor of the polynomial? Create a sample problem that has a binomial which IS a factor of the polynomial being divided, and another problem that has a binomial which is NOT a factor of the ...

*May 6, 2015 by SkatingDJ*

**math**

ok i have another question.. in the square qrst and line qt is congruent to line ts and line rs is congruent to line ts, what is x? line qt=1/2(14x+8) and line rs= 6x+8 what is x?

*September 23, 2007 by jordan*

**calculus (gr 12)**

Evaluate each of the following. Show all your calculations. a) f'(3) if f(x) = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (1) if f(X) = −3x^2 − 5x + 7 d)f" (−3) if f(x) = 4x^3 &#...

*April 16, 2013 by Alexandra*

**calculus (gr 12)**

Evaluate each of the following. Show all your calculations. a) f'(3) if f(x) = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (1) if f(X) = −3x^2 − 5x + 7 d)f" (−3) if f(x) = 4x^3 &#...

*April 16, 2013 by Alexandra*

**division of fractions**

Division of fractions is sometimes said to be multiplication of inverses. Elaborate with an explanation and example. If you have a/b divided by c/d this is the same as a/b * d/c If e.g., we have 2/3 divided by 7/9 then we have 2/3 * 9/7 = 6/7 When dividing fractions the rule ...

*October 7, 2006 by Brenda*

**Math help please**

I'm so lost on this math Hw it's over factoring variables and I don't get it. Like my teach said that we are supposed to have the number and letter in front of everything. For example: -14x^2-7x+21 For factoring I got 7x(-2x-1+3) Because my teacher told me to to combine both 7...

*February 24, 2014 by Anonymous*

**physics**

I was wondering if this formula is dimensionally correct: v = Square root FX/m divided by mass v= m/s F= kgm/s^2 X = meters divided by mass (kg) v = root kgm * m s^2 ------ kg My half solution: m/s = root kgm^2 s^2 ------ root kg m/s = m/s root kg --- the kg cancels root kg ...

*January 13, 2007 by EinstNewtLieb*

**Math**

1 2/5 divided by 21 Which is correct? A. 21/1 x 5/7 = 105/7 =15 or B. 1/21 x 7/5 = 7/105 / 7/7 = 1/15 Neither is correct. The answer is (2/5)/21 = 2/(5*21) = 2/105. Are you sure you copied the problem correctly? 1 2/5 divided by 21 sorry. I missed the "1" out front. The answer...

*February 22, 2007 by Alisha*

**math**

1.0 Four square root of seven open bracket two square root of three plus three square root of six minus square root of seven close bracket. 2.0 open bracket three square root of seven minus square root of two close bracket squared. 3.0 Seven divided by square root of twenty ...

*November 8, 2011 by lupupa*

**math**

what is (x to the 3rd power + x to the 2nd power) divided by ((x+4)(X-4)) multiplied by (x+4) divided by (3x to the 4th power + x to the 3rd power + 2x to the 2nd power)

*August 3, 2011 by kellie*

**alegebra**

1. What is the factored form of 4x 2 + 12x + 5? (1 point) (2x + 4)(2x + 3) (4x + 5)(x + 1) (2x + 1)(2x + 5) (4x + 1)(x + 5) 2. What is the factored form of 2x 2 + x – 3? (1 point) (2x + 3)(x – 1) (2x + 1)(x – 3) (2x – 3)(x + 1) (2x – 1)(x + 3) 3. The area of a rectangular ...

*February 4, 2014 by fluffy*

**Maths**

Simplify: 3-10+9.7 Simplify: 2+3.10 divided by 5.3-9 Simplify: 16-10 divided by 5+13

*November 8, 2012 by monica*

**Math**

A family is building a circular fountain in the backyard. The yard is rectangle and measures 14x by 19x and the fountain is going to be circular with a radius of 6x. Once the fountain is built, what will be the area of the remaining yard? Please do help I already took the test...

*April 12, 2016 by Neko*

**Sandra**

2/7 divided by 6 I know to invert the fraction, then what? Please help! 2/7 divided by 6/1 = 2/7 multiplied by 1/6 Multiply and then reduce. http://mathforum.org/library/drmath/sets/select/dm_divide_fract.html =)

*February 19, 2007 by Math*

**math**

x^3 + 4x^2 + 14x + 20 use the root or zero feature of a graphing utility to approximate the zeros of the function accurate to three decimal places. I do not know how to use the root or zero feature on my calculator. If someone could just explain how to do it that would be ...

*August 20, 2009 by Hannah*

**Parabolas in standard form!**

Hello, I am having the worst time trying to solve these parabolas and putting them into x-h = a(y-k)^2 form. :( There are two problems that i keep doing something wrong. could someone solve them so I can have a set up for the rest of my problems? :) 3y^2+6y+108x-969=0 and x^2+...

*May 24, 2012 by Kate*

**math **

a baseball played 120 games during a season. The ratio of the number of games won to the total number of games played is 2/3. how many games did the team lose during the season? 120/1=2/3 360 divided by 2=180 or 120/x =2/3, 120 divided by 2 = 60

*December 11, 2014 by alec*

**algbra help**

(2u^3-13u^2-8u+7) divided by (u-7) 2u^2 u-7 !2u^3-13u^2-8u+7 2u^3-7u^2 then -6u u-7 -6u^2 -8u +7 -6u^2 +42u then -50 u-7 -50u +7 -50u + 350 then a remainder of -343 rfevgftvgtg i don't get algebra The sum of m and n, divided by the difference of m and n a party mix is made by ...

*August 20, 2005 by doc.mims*

**Physics**

What quantitative information do you need to calculate each of the measurements of an object's motion Displacement: Average velocity: Average acceleration: Displacement: Final position minus initial position Average velocity: Displacement divided by time interval Average ...

*December 20, 2006 by Tpark*

**Quick math help**

Can someone please check my math Hw? Thank you!! Solve each system by elimination. 1. 8x+7y=-1 -9x-7y=2 I got (-1,1) 2. 4x+3y=1 -4x-7y=-13 I got (2,-2) 3. -7x-6y=-21 -x-6y=-3 I got (3,0) 4. -2x+3y=-16 -2x-5y=-16 I got (8,0) 5. -7x+2y=13 -14x+4=26 I got (0,0) 6. 15x-8y=14 -5x+...

*January 27, 2014 by Anonymous*

**Maths**

17 the larger of two number is divided by the smaller,the quotient and the reminder are 2 each. 17 5times the smaller number is divided by the larger,the quotient and the reminder are still 2 each. Find the two number.

*January 28, 2016 by Uzair *

**Math**

A store has apples on sale for three dollars for 2 pounds. How many pounds of apples can you buy for nine dollars. If an apple is approximately 5 ounces how many apples can you buy for nine dollars? Explain your reasoning So for the first question I got 6 apples because I ...

*October 15, 2015 by Anonymous*

**English singulars and plurals**

Question 1 A count noun describes something that what? cannot be divided into distinct units can be divided into distinct units has no plural has no singular Question 2 A noncount noun describes something that what? can be divided into distinct units has no plural uses a ...

*April 25, 2010 by christopher*

**math**

Two rulers are the same length. Ruler A is divided into 357 units while ruler B is divided into 255 units The rulers are placed side by side with the 0 marks lined up and the 375th mark of ruler A aligned with the 255th mark of ruler B. How many total places will the marks on ...

*April 30, 2013 by Marshall*

**Please help me solve this - PreCalc**

Use identities to find the exact value of the trigonometric expression below. 1/cos2 * π/16 - 1/cot2 * π/16 PS: in words, the problem is, one divided by cosine-squared, then beside the cosine-square (still in the denominator) is pi/16. Minus one divided by cotangent-...

*July 25, 2016 by chizoba*

**math**

refer to a seven piece tangram: a. if the original square made by the seven tangram pieces has an edge length of 2, what are the edge lengths of the small square piece? b.the parallelogram is what percent of the original square made by the seven tangram peieces? c. if the ...

*November 16, 2012 by dell*

**New Age Math**

Suppose that y≤5x,3x≤y and 14x+15y≤1 together with 0≤x, 0≤y. The maximum value of the function y+x on the resulting region occurs at x=? and y=? The maximum value of the function is ?

*February 28, 2011 by Meghan*

**Math (Very Easy Math)**

I'm kind of confused as to what simplified mean? Can you please provide me with a definiton... Like I'm kind of stumped as to what one is more simplified -7(2x + 3) or -14x -21 Please explain what it mean for an expression to be "simplified"

*July 24, 2010 by Kate*

**algbrea**

3x-5(3x-7)= 2(x+9) + 45 3x-15x+35= 2x+18 +45 -12x + 35 = 2x+63 -12x -28 = 2x -12 -28 =x -40 =x 3x-5(3x-7)= 2(x+9) + 45 3x-15x+35= 2x+18 +45 -12x + 35 = 2x+63 -10x+35=63 -10x=28 x=-2.8 you are both wrong! 3x - 15x + 35 = 2x + 18 + 45 -12x - 2x = 63 - 35 -14x = 28 x = -2 test my...

*April 25, 2007 by stumped*

**Chemistry**

For the compound C13H18O2 (ibuprofen) determine the molecules of ibuprofen that contains 15 mol of hydrogen? I am missing a step and I am trying to figure it out. I tried 15 mol of H x 1 mol C13 H18 O2 divided by 1 mol of H and got 15 MOL C13 H18 O2 then did 15 mol of C13 H18 ...

*November 29, 2010 by TMV*

**algebra**

i cannot figure any of this stuff out. please help. if you can there are 15 more of these... 1. Simplify 5 + (7-1)2/6 A11 B41/6 C51/6 D7 E17/6 F23 2. Simplify (26/2 + 33)/(23) A11/3 B5 C20/3 D8 E6 F131/8 3. Simplify [7+2(5 - 9)2]/[(4+1)2 - 3(22)] A-23/2 B18/7 C-13 D9/4 E8/41 ...

*September 7, 2010 by whitney*

**chemistry**

a compound with the molecular weight of 276 grams was determined to be 39.10% carbon, 8.77% hydrogen, and 52.13% oxygen. what is the empiricial formula and the molecular formula for the compound? i do not know where to start! i worked it out and i got 276/100=2.76 do i round ...

*November 28, 2009 by shelly*

**Series (Pre-Cal)**

a yellow sqaure of 1 is divided into 9 smaller sqaures, and the middle square i colored blue. Each of the smaller yellow sqaures, is in turn divided into 9 sqaures, and each middle sqaure is colored blue. If this process continues indefinitely, what is the total area colored ...

*March 21, 2009 by Janet*

**5th grade math**

sue and dave shared 1/3 pound of cherries equally. What fractional part of a pound did each get? Molly wrote the following equation to solve the problem: (2 divided by 1/3) 2/1/3=n. Do you agree with Molly's equation? support your answer with information from the problem. I ...

*February 25, 2014 by sara*

**college algebra math help**

Laura owns and operates Aunt Linda's Pecan Pies. She has learned that her profits, P(x), from the sale of x cases of pies, are given by P(x) = -x^2 + 14x + 51. a. The company will "break-even" when the profit is zero. How many cases of pies should Laura sell in order to break-...

*October 3, 2015 by Anonymous*

**math**

what is the least common denominator? It is the smallest number into which all of the denominators in a series of fractions can be evenly divided. For instance, is you have fractions 1/2, 2/3 and 5/6, the denominators are 2, 3 and 6, and the least common denominator is 6. The ...

*August 1, 2006 by megan*

**MATHS**

i need a lil help with this If x=2 is a root of the equation 6x^3 - px^2 - 14x + 24=0, find p,hence, solve the equation 6*(2)3-p*(2)2-14*2+24=0 6*8-p*4-14*2+24=0 48-4p-28+24=0 Can take it from here? yes..i got p to be 11. I do not know what else to do from here to solve the ...

*December 9, 2006 by Kim*

**8th Grade Algebra: Answer Check**

Find the length of the 3rd side of each right triangle. 1. 8^2+15^2=c^2 Answer: c=17 2. 5^2+b^2=13^2 Answer: b=12 3. 9^2+13^2=c^2 Answer: c~15.81 Simplify. Assume that all variables are nonnegative. { this means square root 4. {12 Answer: 2{3 5. 2{75 Answer: 10{3 6. -3{72 ...

*January 20, 2009 by Joy*

**algebra**

the line y=0.16x +0.84 represents an estimate of the average cost of gasoline for each year. the line 0.14x-y=0.95 estimates the price of gasoline in january of each year. a) do you expect the lines to be intersecting, parallel, or perpendicular? explain your reasoning. b) use...

*August 29, 2010 by susan*

**maths**

Show that the equation (1) divided by (x+1) - (x)divided by (x-2)=0 has no real roots Well, to begin, start with 1/(x+1-x). The x's cancel out because they are opposite signs, so now you have 1/1, or just 1. Then, you are dividing 1 by (x-2). In order for an expression to have...

*January 28, 2007 by rochelle*

**Calculus! Please Help!!**

The dollar value of a stock x weeks after a change in management is give by the function: f(x) = x²-14x+30ln(x+1)+32, 0≤x≤7. Find the intervals when the value of the sock was increasing and also determine the maximum value of the stock during this time. PLEEASEE ...

*March 17, 2011 by Sam*

**Algebra II**

I have some questions on my assignment, if you don't mind could you look over my answers. thanxs! Find all the numbers that must be excluded from the domain of the rational expression. x+8/x^2-16, my answer: x cant be -4 or 4 x-3/x^2+11x+24, my answer: x cant be -3 or -8 ...

*August 13, 2007 by Jesse*

**help!!!! i forgot how to do this!!!**

A veterans group gave out 1000 small american flags at the 4th of july parade.They paid $355 for the flags.What was the cost of each flag? You need to divide $355 by 1000. Notice that the price for each flag is less than $1.00. If you'd like to post your answer here, we'll be ...

*July 22, 2006 by yasmin*

**HELP!!**

1.) 15 * 4 2/3 2.) 10 2/3 divided by 4

*September 20, 2011 by Kimberly*

**PreCalc**

A square has side lengths of 24 cm. It is divided into four equal sections (as shown in the first picture) and then two of those sections are shaded. One of the unshaded sections is then divided into four equal sections and two of those are shaded (as shown in the second picture)

*July 16, 2012 by Anonymous*

**math**

Alexandra has 18 yo-yos.She spent $9.00 to buy them all.She wrote the equation 18 divided by 9 = y to find how many yo-yos she got for each dollar she spent.Sven has 9 yo-yos.He spent $18.00 to buy them all.He wrote the equation 18 divided by 9 = y.What does Sven's equation ...

*February 16, 2012 by bebe*

**Math**

Alexandra has 18 yo-yos. She spent $9.00 to buy them all. She wrote the equation 18 divided 9 = y to find how many yo-yos she got for each dollar she spent. Sven has 9 yo-yos. He spent $18.00 to buy them all. He wrote the equation 18 divided 9 = y . What does Sven's equation ...

*October 17, 2012 by Ryan*

**Calculus**

Given that C(x)=2x^3-21x^2+36x+1000 is a cost function, determine the intervals for which the cost is increasing. Determine any intervals for which the marginal cost is increasing. Marginal cost is when you derive the cost function, correct? So do you do the second derivative ...

*December 7, 2013 by Lindsay*

**algebra... help soon please**

i cannot figure any of this stuff out. please help. if you can there are 15 more of these... 1. Simplify 5 + (7-1)2/6 A11 B41/6 C51/6 D7 E17/6 F23 2. Simplify (26/2 + 33)/(23) A11/3 B5 C20/3 D8 E6 F131/8 3. Simplify [7+2(5 - 9)2]/[(4+1)2 - 3(22)] A-23/2 B18/7 C-13 D9/4 E8/41 ...

*September 8, 2010 by whitney*