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July 25, 2014

July 25, 2014

**Recent Homework Questions About Algebra**

Post a New Question | Current Questions

**algebra**

If f(x)=2x+1 and g(x)=3x-5, find f(g(2)).
*Tuesday, December 10, 2013 at 8:40pm*

**algebra**

what point in the feasible region maximizes the objective function x>0 y>0 constraints -x+3+y y,1/3x+1 Object function C+5x_4y
*Tuesday, December 10, 2013 at 7:52pm*

**college algebra**

A circular vent pipe with a diameter of 5.5 inches is place on a roof tht has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.
*Tuesday, December 10, 2013 at 7:51pm*

**College Algebra**

A circular vent pipe with a diameter of 5.5 inches is place on a roof tht has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.
*Tuesday, December 10, 2013 at 6:34pm*

**Algebra **

Simplify (factor if necessary) : 5 x^2 y^2 - 25 x^3 y^3 -------------------------------- x^2 y^2 Please help! Don't understand
*Tuesday, December 10, 2013 at 6:22pm*

**college intermediate algebra**

Working together, two people can mow the lawn in 24 minutes. Working alone, one person takes 20 minutes longer than the other. How many minutes would it take each person to mow the lawn alone? Thanks!!!
*Tuesday, December 10, 2013 at 3:35pm*

**algebra**

what point in the feasible region maximizes the objective function? x>0 y>0 constraints -x+3>y y<1/3x+1
*Tuesday, December 10, 2013 at 3:30pm*

**algebra**

What point in the feasible region maximizes the objective function? Step by step please x¡Ý0 y¡Ý0 Constraints -x+3¡Ýy y¡Ü1/3x+1 objective function C=5x-4y
*Tuesday, December 10, 2013 at 2:08pm*

**algebra**

what is the solution of the following system {3x + 3y =10 {-9x-9 =-30 Can you show step by step please.
*Tuesday, December 10, 2013 at 1:49pm*

**Algebra**

Which linear system of equation does the matrix represent [2 -3=10] [5 6=-12] is it {2x + 5y =10 {5x + 6y =-12
*Tuesday, December 10, 2013 at 1:47pm*

**algebra**

What is the inverse of [-3 5] [-6 -8]
*Tuesday, December 10, 2013 at 1:42pm*

**Algebra 2**

some investments in the stock market have earned 10% annually. At this rate, earning can be found using the formula A=p(1.10)n, where A is the total value of the investment, P is the initial value of the investment, and n is the number of years the money is invested. If $1,5oo...
*Tuesday, December 10, 2013 at 12:00pm*

**Intermediate Algebra (College)**

Solve algebraically: 14/x^2 - 5/x = 1 Thank you!!! (:
*Tuesday, December 10, 2013 at 12:03am*

**Algebra 1**

The minimum recommended width of the space between 6-inch by 6-inch tiles is 2^-2 inch and the maximum recommended width is 2^-1 inch. Simplify the expressions for the minimum and maximum widths of the space between the 6-inch by 6-inch ﬂoor tiles.
*Monday, December 9, 2013 at 11:09pm*

**Algebra 1**

The minimum recommended width of the space between 6-inch by 6-inch tiles is 2^-2 inch and the maximum recommended width is 2^-1 inch. Simplify the expressions for the minimum and maximum widths of the space between the 6-inch by 6-inch ﬂoor tiles. I got 1/3 inch is is ...
*Monday, December 9, 2013 at 7:47pm*

**Algebra 1**

The sume of two numbers is 28 and their difference is 4. What are the numbers?
*Monday, December 9, 2013 at 7:22pm*

**Algebra 1b!**

1. Find the excluded value of x for the polynomomial expression 4x/6 a. 6 b. -6 c. 1/6 d. -1/6 2. Simplifly 3-2x/7 + 4x+5/7 a. 2x+8/14 b. 2x+8/7 <--- c. x+1/7 d. 2x+2/7 3. Simplify 6ab^6/4a^7b^10 * a^3b^4/2a^7b^6 a. 7x/8 - 2x/8 b. -5x/8 c. 3a^2b^3/4a^7b^8 d. a^2b^5/2a^7b^8...
*Monday, December 9, 2013 at 3:40pm*

**Algebra 1 (Reiny or Kuai)**

1. The school band sells carnations on Valentine's Day for $2 each. They buy the carnations from a florist for $0.50 each, plus a $16 delivery charge. a. Write a system of equations to describe the situation. A: y = 2x; y = 0.50x + 16. b. Graph the system. What does the ...
*Monday, December 9, 2013 at 2:57pm*

**Algebra 1 (Reiny or Kuai)**

1. Which x-values should I choose to graph these equations (y = x; y = -x + 6) so that they intersect? 2. The school band sells carnations on Valentine's Day for $2 each. They buy the carnations from a florist for $0.50 each, plus a $16 delivery charge. a. Write a system ...
*Monday, December 9, 2013 at 1:24pm*

**College Algebra 105**

use the rational zero's theorem to list the potential zero's of the polynomial function. Do not attempt to find the zero's f(x)=-169x^7-x^6+x+13 and then the second part is find the potential rational zero's.
*Monday, December 9, 2013 at 11:45am*

**algebra**

all
*Monday, December 9, 2013 at 7:11am*

**Algebra 2**

What is a polynomial function in standard form with zeros 1, 2, 3, and –3?
*Sunday, December 8, 2013 at 10:27pm*

**Algebra**

Please help me find the value of the annuity for the following: a1= $8000, I=0.06, n=10 $8,000 invested for 10 years at 8% compounded annually$8,000 invested for 10 years at 0.06% n = 10 Thank you.
*Sunday, December 8, 2013 at 9:25pm*

** Math - Linear Algebra **

Let S be the plane defined by x−4y−3z = −18, and let T be the plane defined by −2x+8y+7z = 41. Find the vector equation for the line where S and T intersect. x 0 0 y = 0 + t0 z 0 0
*Sunday, December 8, 2013 at 7:01pm*

**algebra **

write the equation in standard form: 2x^2-12x+5
*Sunday, December 8, 2013 at 4:43pm*

**algebra**

if a chef can bake 15 pies in an hour what is the rate in pies per minute
*Sunday, December 8, 2013 at 3:04pm*

**Algebra 2**

Use the Binomial Theorem to expand the binomial: (d – 4b)^3
*Sunday, December 8, 2013 at 2:47pm*

**Algebra 2**

Use the Binomial Theorem to expand the binomial: (d – 4b)^3
*Saturday, December 7, 2013 at 9:54pm*

**college algebra**

solve the system 2x+y=-4 -x+y= 2
*Saturday, December 7, 2013 at 8:23pm*

**algebra**

For a motor vehicle travelling at r miles per hour, the distance d in feet required to stop at approximately d=0.05r^2+r. If a school bus is traveling at 45mph how many feet to, the nearest foot,would it travel before coming to a halt.
*Saturday, December 7, 2013 at 8:02pm*

**algebra**

How would you solve this one 40x^5-56x^4+24x^3 divided by -8x^2
*Saturday, December 7, 2013 at 3:35am*

**algebra**

Determine X and Y
*Friday, December 6, 2013 at 8:22pm*

**algebra**

CLEAN CARPET COMPANYS CLEAN 3 ROOMS OF CARPETING FOR 144 DOLLARS. WHICH OF THE FOLLOWING IS AN EQUIVALENT RATE ? A.288 DOLLARS FOR 6.5 ROOMS B. 240 DOLLARS FOR 5.5 ROOMS C. 360 DOLLARS FOR 7.5 ROOMS D. 192 DOLLARS FOR 4.5 ROOMS
*Friday, December 6, 2013 at 6:26pm*

**Algebra 2**

What are the solutions? 1/2x^2+2x+3=0
*Friday, December 6, 2013 at 3:47pm*

**algebra 1**

please help I have no clue how to do this b-9+6b =30
*Friday, December 6, 2013 at 12:59pm*

**Algebra**

I have an assignment to write an equation to point-slope form, then to standard form, and then to slope-intercept form. I have used the points (-2,-1) or (1,2), but I used (-2,-1). Now, I have the point-slope form of y + 1= 1(x + 2) and the standard form of y – 1x = -1. ...
*Friday, December 6, 2013 at 10:56am*

**Algebra**

Can anyone help me with this problem? I need to show all steps and explain what is happening. A graph would be great for a visual too if possible. Thank you for any help. We define the following functions: f(x) = 2x + 5, g(x) = x^2 – 3, h(x) = 7 – x / 3 (that is 7-x ...
*Friday, December 6, 2013 at 3:38am*

**Algebra**

Choose 1 set of points from the choices below. Then, solve the problem and post your solution, showing your steps. Write an equation in point-slope form for the line that passes through one of the following pairs of points (you may choose the pair you want to work with). Then...
*Friday, December 6, 2013 at 2:00am*

**Algebra 1**

I not sure how to do these problems can someone help. a^-1b-2 2x^-3y^1
*Friday, December 6, 2013 at 12:50am*

**Algebra**

How do I solve this algebra questions, 2n+4n+4=-8, 9=5+4t, at+2=12, 2x+3=7, 3b+6=12, m/6+5=7????
*Thursday, December 5, 2013 at 9:59pm*

**Algebra 2**

A grocer mixes x kg of Grade A and Y kg of Grade B nuts to get 60 kg of mixed nuts. Write and equation involving x and y to represent this information. The grocer sells all the mixed nuts at 9.00 per kg. He receives the same amount of money as when he sells the Grade A nuts ...
*Thursday, December 5, 2013 at 8:45pm*

**ALGEBRA 1 HELP**

Your hole punch makes holes in your that have diameter of 4^-1 inch. a.Write an expression for the area of one punched hole. Use the formula for the area of a circle A=:r^2. (: is pi sign) b.Your hole punch makes three holes in a page . Write an expression for the total area ...
*Thursday, December 5, 2013 at 8:28pm*

**Algebra 1**

6y^-3 Can you show steps on how to do this
*Thursday, December 5, 2013 at 8:03pm*

**Algebra NEED HELP PLEASE**

If x is the midpoint of line vy and wz And the prove is triangle vwx is congruent triangle yzx can you help me solve this using two column prove
*Thursday, December 5, 2013 at 7:45pm*

**Algebra **

Can anyone help me with the following, by providing the steps to get there and what it is that you are doing? any help would be greatly appreciated... We define the following functions: f(x)=2x+5 g(x)=x^2-3 h(x)=7-x/3 ◦Compute (f – h)(4). ◦Evaluate the ...
*Thursday, December 5, 2013 at 7:43pm*

**Algebra 2**

I am trying to find the inverse of these functions. Can someone please check my answers and tell me how to do number 2? 1. y=7^x y=log base 7 x 2. y=log base 1/2 x 3. y=2^(x)-3 y=2^(x+3) 4.y=6+log x
*Thursday, December 5, 2013 at 7:36pm*

**Algebra**

During a softball game, a batter hits a ball upward from an initial height of 3 feet. The height, in feet, of the softball is given by s(t)=−16t^2+70t+3 , where t is time in seconds and . Which is closest to the time when the softball will be 50 feet above the ground?
*Thursday, December 5, 2013 at 7:31pm*

**Algebra 1**

Two bullet trains leave the station at the same time traveling in opposite direction. The northbound train goes 125 mph and the southbound train goes 120 mph. After how long will they be 735 miles apart?
*Thursday, December 5, 2013 at 7:25pm*

**Algebra **

If x is the midpoint of line vy and wz And the prove is triangle vwx is congruent triangle yzx can you help me solve this using two column prove
*Thursday, December 5, 2013 at 7:21pm*

**Algebra**

What are the zeroes of y = x2 – 2x – 15? –3, –5 3, 5 –3, 5 3, –5
*Thursday, December 5, 2013 at 7:11pm*

**Algebra 1 HELP**

I am not sure how to do these 2 problems can someone show me. Simplify the expression Write answers using exponents. 8^6/8^4*8^2 4^5*1/4^2 <---is by the 4 only
*Thursday, December 5, 2013 at 6:55pm*

**algebra 2**

There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that it will rain on both Saturday and Sunday?
*Thursday, December 5, 2013 at 3:18pm*

**algebra**

A ball is thrown upward from a height of 240 feet. the height h of the object(in feet) t seconds after the ball is released is given by h=-16t^2+32t+240 a. how long does it take the ball to reach its maximum height? b. what is the maximum height attained by the ball? c. how ...
*Thursday, December 5, 2013 at 1:25pm*

**Algebra 2**

An archer releases an arrow from a shoulder height of 1.39 m. When the arrow hits the target 18 m away, it hits point A. When the target is removed, the arrow lands 45 m away. Find the maximum height of the arrow along its parabolic path. My points are (0,1.39) (18,1.5) (45,0...
*Thursday, December 5, 2013 at 11:02am*

**algebra 1**

you are preheating an oven to 350 degrees Fahrenheit before you bake muffins. several minutes later, the oven thermometer reads 346 degrees Fahrenheit. the measured temperature has an absolute deviation of at most 2 degrees Fahrenheit. write and solve an inequality to find the...
*Wednesday, December 4, 2013 at 11:03pm*

**algebra 1**

an essay contest requires that essay entries consist of 500 words with an absolute deviation of at most 30 words. what are the possible numbers of words that the essay can have?
*Wednesday, December 4, 2013 at 10:51pm*

**Algebra 1 **

Check answer Glass Vase You are taking a glass-blowing class and have created a vase in the shape of a sphere. The vase will have a hole in the top so you can put ﬂowers in it and it will sit on a stand. The radius of your vase is 21/2 inches. Use the formula V=4/3:r^3 ...
*Wednesday, December 4, 2013 at 10:01pm*

**Algebra 1**

You are designing a wall mural that will be composed of squares of different sizes. One of the requirements of your design is that the side length of each square is itself a perfect square. 1. If you represent the side length of a square as x^2, write an expression for the ...
*Wednesday, December 4, 2013 at 9:39pm*

**Algebra**

If f(x)=2x+1 and g(x)=3x-5, find f(g(2)).
*Wednesday, December 4, 2013 at 7:41pm*

**Algebra**

Hello, Thank you for all of your help. Can you help me to figure out what the relation is for x=1-y^2? If I will be picking y values for a graph to get my x values then shouldn't it be 1-y^2? Thank you.
*Wednesday, December 4, 2013 at 7:30pm*

**algebra 1**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
*Wednesday, December 4, 2013 at 6:56pm*

**Algebra**

1. a) write y=4x+8 in factored form 2. a) write y=-2x-6 in factored form 3. a) write y=1/3x+3 in factored form These are the answers I got: 1. y=4(x+2) 2. y= -2(x+3) 3. y=1/3(x+9) If I got any of these wrong, tell me what I'd did wrong.
*Wednesday, December 4, 2013 at 6:44pm*

**College Algebra**

1. 2log8^x=log8(4x+12) both log bases are 8. I have no clue what to do. 2. 1/2ln (x) -3 ln y - ln (z-2) so far for this second one i have ln sqrt(x)-ln y^3 - ln (z-2) dont know what to do next
*Wednesday, December 4, 2013 at 1:17pm*

**Algebra**

Hello again, I am now working on trying to find the relation of x = 1 - y^2, along with the domain and range. Then written in interval notation. I think I am ok with figuring out the domain and range on a graph but my problem is how to solve to get these x and y coordinates. ...
*Wednesday, December 4, 2013 at 1:10am*

**Algebra**

I think I am a little bit confused with this absolute value thing. When do I change the sign inside? Example f(-2)= |-2-2|. Is this equal to -4 or do I need to change a sign inside the absolute value when adding. I am trying to get some x and y values to graph. Thanks for any ...
*Tuesday, December 3, 2013 at 10:47pm*

**Algebra 8th**

Can anyone explain to me how to simplify an expression with negative exponents using the rules for multiplying monomials? Have to know it and im not sure!!
*Tuesday, December 3, 2013 at 10:42pm*

**Algebra**

Is the relation of f(x) = |x - 2| the -2 that is inside the absolute value or is it the x-2?
*Tuesday, December 3, 2013 at 10:42pm*

**Algebra 1**

How do you do this one Have a exponent with answer 8^6/8^4*8^2
*Tuesday, December 3, 2013 at 10:08pm*

**algebra**

One cellular phone carrier charges $26.50 a month and $0.15 a minute for local calls. Another carrier charges $14.50 a month and $0.25 per minute for local calls. For how many minutes is the cost of the plans the same?
*Tuesday, December 3, 2013 at 10:02pm*

**ALGEBRA 1**

Simplify the expression. (1/z)^9 I got 1/z^9 <--(The exponent is by the z only)
*Tuesday, December 3, 2013 at 9:37pm*

**algebra**

You and your friend are in a canoe race. Your friend is half a mile in front of you and paddling 3 miles per hour. You are paddling 3.4 miles per hour. You both maintain your paddling rates for the remainder of the race. How far ahead of your friend will you be when you cross ...
*Tuesday, December 3, 2013 at 7:45pm*

**Algebra 8th**

Find the greatest possible error for each measurement. 953 mi 0.5 mi Find the greatest possible error for each measurement. 1 3/4 c not-- 1/4 c Find the greatest possible error for each measurement. 12.3 L 0.05L Find the greatest possible error for each measurement. 4 1/2 oz 1...
*Tuesday, December 3, 2013 at 5:22pm*

**AP Algebra**

Write the expression as a single logarithm: 2lnx+3lny-ln2-4lnz
*Tuesday, December 3, 2013 at 3:31pm*

**College algebra**

Solve the system Y=3x-2 6x-2y=30
*Tuesday, December 3, 2013 at 3:29pm*

**College algebra**

Solve the system X=2y+3 3x+4y=59
*Tuesday, December 3, 2013 at 3:28pm*

**algebra**

A die is rolled 6 times. Find the probability P(of exactly 4 occurrences of 2).
*Tuesday, December 3, 2013 at 2:10pm*

**College Algebra**

A= [2 3 0] [4 1 6] 1. what is the additive inverse of A? 2. find 3A.
*Tuesday, December 3, 2013 at 12:46pm*

**College Algebra**

Line m passes through (2,5) and (-3,-2) Find the slope of a line that is perpendicular to line m.
*Tuesday, December 3, 2013 at 12:44pm*

**Algebra**

Solve fro y, if -3y=24+4x
*Tuesday, December 3, 2013 at 12:43pm*

**College Algebra**

Find the probability of drawing two i's in a row without replacement.
*Tuesday, December 3, 2013 at 12:42pm*

**Algebra 1 ( bobpursley)**

1. Write an equation in slope-intercept form for the line that passes through (5,0) and is perpendicular to the line given by y = -5/2x + 6. A: m = 2/5 y = mx + b 0 = (2/5)(5) + b 0 = 2 + b b = -2 y = 2x/5 -2? 2. Write an equation in slope-intercept form for the line that ...
*Tuesday, December 3, 2013 at 11:24am*

**Algebra 1 (Reiny or Kuai)**

1. At a chili cook-off, people pay a $3.00 entrance fee and $0.50 for each bowl of chili they taste. The graph shows the total cost per person as a function of the number of bowls of chili tasted. a. Write a rule that gives the total cost per person as a function of the number...
*Tuesday, December 3, 2013 at 10:21am*

**Algebra!**

(1) A business shipped 108 packages one day. Customers are charged $3.50 for each standard-delivery package and $7.50 for each express-delivery package. Total shipping charges for the day were $506.00. How many of each kind of package were shipped? Standard: Express: (2) A ...
*Monday, December 2, 2013 at 8:23pm*

**Algebra 1 (Reiny or Kuai)**

Show that PQRS is a rectangle. (P: (1,4); Q: (2,6); R: (8,3); S: (7,1)
*Monday, December 2, 2013 at 8:11pm*

**Algebra!**

(1) A business shipped 108 packages one day. Customers are charged $3.50 for each standard-delivery package and $7.50 for each express-delivery package. Total shipping charges for the day were $506.00. How many of each kind of package were shipped? Standard: Express: (2) A ...
*Monday, December 2, 2013 at 7:58pm*

**algebra 1**

5) x-y=1 3x=3y=3 6) 2x-y=6 3y=-6x=18
*Monday, December 2, 2013 at 7:46pm*

**Algebra 1 (Reiny or Kuai)**

1. Show that ABCD is a trapezoid. (A: (-2, 5); B: (4, 5); C: (6,2); D: (2, -1)). 2. Write an equation in slope-intercept form for the line that passes through (5,0) and is perpendicular to the line given by y = -5/2x + 6.
*Monday, December 2, 2013 at 7:04pm*

**Algebra 1 Answer Check (Reiny or Kuai)**

Are my answers correct? Identify which lines are parallel. 1. y = 6; y = 6x + 5; y = 6x - 7; y = -8 A: y = 6; y = -8; y = 6x +5; y = 6x - 7 (all) 2. y = 3/4x - 1; y = -2x; y - 3 = 3/4(x - 5); y - 4 = -2(x + 2) A: y = 3/4x - 1; y- 3 = 3/4(x -5) Identify which lines are ...
*Monday, December 2, 2013 at 7:03pm*

**algebra 1**

2x+3y=4 4x+6y=9
*Monday, December 2, 2013 at 6:47pm*

**algebra 1**

3x+y=6 4x+2y=8 how do you solve this?
*Monday, December 2, 2013 at 6:35pm*

**Algebra 1 **

Name the property that is demonstrated by the example. 1. (2x)^3=2^3*x^3=8x^3 I am not sure what to put
*Monday, December 2, 2013 at 6:22pm*

**PRE-ALGEBRA**

A 55-minute long distance phone costs 2.75.What is the cost per minute
*Monday, December 2, 2013 at 4:46pm*

**Algebra 1 (Reiny or Kuai)**

1. Show that ABCD is a trapezoid. (A: (-2, 5); B: (4, 5); C: (6,2); D: (2, -1)). 2. Write an equation in slope-intercept form for the line that passes through (5,0) and is perpendicular to the line given by y = -5/2x + 6.
*Monday, December 2, 2013 at 3:09pm*

**Algebra 1 Answer Check (Reiny)**

Identify which lines are parallel. 1. y = 6; y = 6x + 5; y = 6x - 7; y = -8 A: y = 6; y = -8; y = 6x +5; y = 6x - 7 (all) 2. y = 3/4x - 1; y = -2x; y - 3 = 3/4(x - 5); y - 4 = -2(x + 2) A: y = 3/4x - 1; y- 3 = 3/4(x -5) Identify which lines are perpendicular. 3. y = 2/3x - 4; ...
*Monday, December 2, 2013 at 3:04pm*

**Algebra**

2. Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x2+y2+8x+2y+8=0
*Monday, December 2, 2013 at 9:08am*

**algebra 2**

3x+3y
*Sunday, December 1, 2013 at 10:51pm*

**Algebra **

The length of a rectangle is more than double the width, and the area of the rectangle is . Find the dimensions of the rectangle.
*Sunday, December 1, 2013 at 10:42pm*

**algebra**

If shorter boards are cut from one long board, how many cuts will it take to have 12 shorter boards if there is no waste left?
*Sunday, December 1, 2013 at 10:26pm*

**Physics (algebra-based)**

A child holds a candy bar 13.4 cm in front of the convex side-view mirror of an automobile. The image height is reduced by one fifth. What is the radius of curvature of the mirror? Answer in units of cm. I did 1/5=-image distance (i)/13.4-->i=-2.68 1/f=1/-2.68+1/13.4---->...
*Sunday, December 1, 2013 at 8:15pm*

**Math - Algebra 2**

I have tried several times to solve this. I have 3 points (0,-5), (3, -6), (-3,-7). I'm trying to get the quadratic equation. I keep getting y=(-1/6)x^2+ (1/6)x +0. When i plug in other numbers to check it's not the parabola facing down like my image. Please help!
*Sunday, December 1, 2013 at 4:54pm*

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