Tuesday

May 31, 2016
**algebra**

25=(1/5)^-2
*Tuesday, May 6, 2014 by Mary *

**ALGEBRA**

Simplify. (x^2-3x-10)/(x+2) How? (I don't have any answers for this one)
*Tuesday, May 6, 2014 by Sandra*

**pre algebra**

is the following a non linear function? y = 3x squared + 1
*Tuesday, May 6, 2014 by steve*

**algebra**

Two persons are to run a race, but one can run 8 meters per second, whereas the other can run 2 meters per second. If the slower runner has a 99-meter head start, how long will it be before the faster runner catches the slower runner, if they begin at the same time?
*Tuesday, May 6, 2014 by Quencie*

**algebra **

1. Explain the concept of modeling. How does a model describe known data and predict future data? How do models break down (what can cause this)? Can you think of an example? 2. Imagine that points on a line on a Cartesian graph represent approximately the distance y in feet a...
*Tuesday, May 6, 2014 by Mayra Jacobs*

**Algebra help please!**

1. Find 5A-3B. A=[6 -5 8], B=[7 5 -6] [5 -4 3] [4 3 -4] 2. Solve the matrix equation. [3 -1] - x=[-2 3] [2 5] [1 -6] 3. Given A=[1 -1 2] and B=[-1 -3 2], [3 0 5] [2 4 5] [0 2 -2] Find AB. 4. What is the inverse of [-100 -25]? [-5 -6]
*Tuesday, May 6, 2014 by Kirston*

**Algebra 2**

4 exponent -2=1/12
*Tuesday, May 6, 2014 by kathy*

**algebra**

2b-2/2b^2-8 (find domain to rational expression)
*Tuesday, May 6, 2014 by Michele*

**Algebra **

x -1 -1 -2 -2 y 0 -1 2 3Part A: Does the table represent a relation that is a function? Justify your answer by using the values shown in the table. (4 points) Part B: The function f(h) shown below represents the number of tennis matches Diana won each month when she practiced ...
*Tuesday, May 6, 2014 by Mona*

**algebra**

Please Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c in words.
*Tuesday, May 6, 2014 by john*

**algebra**

solve the system of equation 2x+y=5 y^2-2y=-3x+5
*Tuesday, May 6, 2014 by Tom*

**algebra**

Mac's wallett is full of $5 and $10 bills. He has 25 bills totaling $230. How many of each bill does he have?
*Tuesday, May 6, 2014 by Frankie*

**algebra**

Factor the expression. x2 + 2x + 24 HintX
*Monday, May 5, 2014 by john*

**ALGEBRA**

The temperature, T, of a given mass of gas varies inversely with its volume, V. The temperature of 20 cm3 of a certain gas is 15°C. What will the temperature be when it is compressed to a volume of 5 cm3? • 10°C • 300°C • 6.67°C • 60°C How?
*Monday, May 5, 2014 by Sandra*

**algebra**

write the equation in logarithm form a) 343=7^3 b) 25-(1/5)-^2 c A=bc Thank you for your help. I have no idea how to do this problem and I am getting stress.
*Monday, May 5, 2014 by Mary *

**Algebra Question~!**

A company invests $15,000.00 in an account that compounds interest annually. After two years, the account is worth $16,099.44. Use the function in which r is the annual interest rate, P is the principle, and A is the amount of money after t years. What is the interest rate of ...
*Monday, May 5, 2014 by Gabby*

**ALGEBRA**

Solve. 1/(3x-6) – 5/(x-2) = 12 • X=34/9 • X= -29/18 • X= -34/9 • X=29/18 How?
*Monday, May 5, 2014 by Sandra*

**Algebra**

Simplify into one fraction. 3/(x-3)-5/(x-2) • (-2x + 9)/(x-3)(x-2) • (-2x)/(x-3)(x-2) • (-2x -9)/(x-3)(x-2) • (2x+9)/(x-3)(x-2) How?
*Monday, May 5, 2014 by Sandra*

**Algebra**

Divide. [(X^2 +6+9)/(X-1)]/(X^2-9)/(x^2-2x+1) • [(x+3)(x-1)]/(x-3) • [(x-3)(x+1)]/(x+3) • [(x+3)(x+1)/(x-3) • [(x-3)(x-1)]/x+3) How?
*Monday, May 5, 2014 by Anonymous*

**ALGEBRA**

In the meantime I got the last one but this one I can't figure... Divide. [(x^2-9)/(x-5)]/(x+3) • (x-3)/(x-5) • (x-5)/(x-3) • [(x+3)/(x-3)]/(x-5) • (x+3)/(x-5) How?
*Monday, May 5, 2014 by Sandra*

**ALGEBRA**

Lost in the shuffle; sending again... Simplify into on fraction. (-5x/x+3)-(7/x+3) • (-5x-7)/(x+3) • (-5x+7)/(x+3) • (-5x-7)/(x+3)^3 • (-5x+7)/(x+3)^2
*Monday, May 5, 2014 by Sandra*

**Algebra**

In 2005, Lee invested $2000 in a fund that pays 5% interest for the first 10 years, and 8% interest for every year thereafter. What will be the value of her investment in the year 2020?
*Monday, May 5, 2014 by Christi*

**ALGEBRA**

Multiply: (K+3)/(4K-2)*(12K^2 + 2k – 4) • 3(k+3)/(3k+2) • 3(k+3)(2k-1)/2 • (x-5)(3x+2) • (x-5)(12x+8) How? 11
*Monday, May 5, 2014 by Sandra*

**LOGS (ALGEBRA)**

FIND THE INVERSE: f(x) = 10^(5x+3) - 10 f^-1(x) =
*Monday, May 5, 2014 by Marty*

**Algebra, Logirithms**

Find the inverse of the function: f(x) = e^(4x+2) - 10
*Monday, May 5, 2014 by Lance*

**~Algebra question~**

The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 7 hours to drive the distance at 55 miles per hour, how long will it take to drive the same distance at 65 miles per hour? (1 point)
*Monday, May 5, 2014 by Gabby*

**Algebra**

Simplify into on fraction. (-5x/x+3)-(7/x+3) • (-5x-7)/(x+3) • (-5x+7)/(x+3) • (-5x-7)/(x+3)^3 • (-5x+7)/(x+3)^2 How?
*Monday, May 5, 2014 by Sandra*

**One Algebra Question~!**

The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 7 hours to drive the distance at 55 miles per hour, how long will it take to drive the same distance at 65 miles per hour? (1 point)
*Monday, May 5, 2014 by Gabby*

**algebra**

Let U=1,2,3,4,5,6,7,8,9,10 {x|x is multiply of 2} U {x is multiply of 7}
*Monday, May 5, 2014 by Mary *

**pre algebra**

find the solution y = 2x - 1 and y = x +3
*Monday, May 5, 2014 by steve*

**pre algebra**

find the solution y = 4x and y + x = 5
*Monday, May 5, 2014 by steve*

**Algebra**

Simplify. (3/5a)*(1/a^2) • 3/5a^2; where a ≠ 0 • 3/5a^2 • 3/5a^3; where a ≠0 • 4/5a^2; where a ≠0 How?
*Monday, May 5, 2014 by Sandra*

**Algebra**

Simplify. x/(7x+x^2) • 1/(7+x); where x ≠-7 • 1/(7x); where x≠0 • 1/(7+x); where x≠0,-7 • 1/7 How?
*Monday, May 5, 2014 by Sandra*

**Algebra**

Solve. (–10x3 + 30x – 20) ÷ (–5x + 5) • 2x2 – 2x + 4 • –2x2 – 2x – 4 • –2x2 + 2x + 4 • 2x2 + 2x – 4 How?
*Monday, May 5, 2014 by Sandra*

**Algebra**

An artifact was found and tested for its carbon-14 content. If 74% of the orginal carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half life of 5730 years).
*Monday, May 5, 2014 by Kim Johnson*

**algebra**

solve each system of equations 1.4x-0.5y=1.3 0.4x+1.1y=4.1
*Monday, May 5, 2014 by Tom*

**algebra**

assuming the distance between points (2,-3) and (-1,y) is 5 units, find y. how do you set this up?
*Monday, May 5, 2014 by Tom*

**algebra**

Let U= 1,2,3,4,5,6,7,8,9,10 {12345 n 34567 Thank you
*Sunday, May 4, 2014 by Mary *

**algebra**

preform the given set operation U= 1,2,3,4,5,6,7,8,9,10 {1,3,6}{2,4,9}
*Sunday, May 4, 2014 by Mary Ann*

**Algebra**

I have to identify the system of equations, if any for: -2x-4=1, 12=-6x-3 no solution? infinitely many solutions? (0,-1)? or (-1,0)?
*Sunday, May 4, 2014 by Sandra*

**Algebra 2**

sketch a graph for f(x)=2(1/2)^x +1
*Sunday, May 4, 2014 by kathy*

**Algebra 1b**

Determine the equation of g(x) that results from translating the function from f(x)=(x+2)^2 to the right 6 units
*Sunday, May 4, 2014 by Lisa*

**Algebra**

Solve. • x = 2 • x = –2 • x = 28 • x = –28 How?
*Sunday, May 4, 2014 by Sandra*

**Algebra I**

what does factoring the sum or difference of two cubes mean
*Sunday, May 4, 2014 by Allie*

**Algebra **

The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 7 hours to drive the distance at 55 miles per hour, how long will it take to drive the same distance at 65 miles per hour? • about 6.25 hours • about 385.00 hours •...
*Sunday, May 4, 2014 by Sandra*

**algebra**

Which of the following ordered pairs is included in the solution set of the system, y < 2 - 2x and y > 2x -3? (4, 0) (0, 0) No Solution (3, 4) 2. Choose all correct answers. Which of the following are solutions of the system? x < 3 and x + y < 5 (2, 2) (4, 2) (2, -...
*Sunday, May 4, 2014 by Andrean*

**Algebra 2**

Game Theory: Consider a game in which each of two people simultaneously chooses an integer: 1 or 2. Find the expected value for player A and the expected value for player B. Is each game fair. Question: If the numbers are the same, then player A wins 1 point from player B. If ...
*Sunday, May 4, 2014 by Jackie*

**Algebra**

Divide. (–6m^9 – 6m^8 – 16m^6) ÷ (2m^3) • –3m9 – 3m8 – 8m6 • –3m6 – 6m8 – 16m3 • –3m6 – 3m5 – 8m3 • –3m6 – 3m5 – 16m3
*Sunday, May 4, 2014 by Sandra*

**algebra**

7/ square root of p
*Sunday, May 4, 2014 by joe*

**algebra**

(7 square of p)/ (square of p)
*Sunday, May 4, 2014 by joe*

**Algebra**

Dorothy and Rosanne are baking cookies for a party. Working alone, Rosanne can finish the cookies in 6 hours. Dorothy can finish them in 8 hours if she is working alone. How long will it take them to bake the cookies if they are working together? Round your answer to the ...
*Saturday, May 3, 2014 by Sandra*

**Algebra**

A catering company charges a $300.00 set up fee and $10.00 per person for a lunch buffet. Approximately how many people must attend the lunch so that the total cost per person is $14.00? (1 point) • 75 people • 30 people • 214 people • 440 people
*Saturday, May 3, 2014 by Sandra*

**Algebra**

Bob drove 120 miles on his vacation. He drove an average of 1.2 times faster on the 2nd 60 miles of his trip than he did on the first half of the trip. Which expression represents the time he spend driving? Let x=his speed on the first half of the trip. • 110/x • 120...
*Saturday, May 3, 2014 by Sandra*

**Algebra**

A moving picture theater usually took in $220 an evening on ticket sales. The manager found out that by reducing the price of tickets by 5 cents, 200 more persons attended, and the box office receipts were $80 more an evening. How many persons attended before the reduction in ...
*Saturday, May 3, 2014 by Laura*

**algebra**

solve the equations 21E-7=0 I came up with 0.33 am I right or wrong
*Friday, May 2, 2014 by Mary *

**algebra**

let x=3 and y=4. Find the value of the given capital letter. N=x^2+2xy+y^2+1 Thank you
*Friday, May 2, 2014 by Mary Ann*

**algebra**

A fence is 140 feet long and 50 feet wide. How much fencing is needed?
*Friday, May 2, 2014 by Norris*

**algebra**

At a grocery store, the number of customers arriving per hour is shown by the function f(x) = -x^+ 2x + 2. Find the number of customers that arrived in the 6th hour.
*Friday, May 2, 2014 by samira*

**algebra**

John read 1/4 of pages of book on Saturday and another 2/3 of pages on Sunday. She read the last 5 pages on Monday . What was the total pages of book?
*Friday, May 2, 2014 by Raj*

**Algebra**

There is 1/3 of a cake shared equally among 4 friends . What fraction of a pound of cake will each friend get?
*Friday, May 2, 2014 by Jenny 2*

**algebra**

X+3÷9-X^2
*Friday, May 2, 2014 by hannah*

**College Algebra & Trigonometry**

A weight is attached to an elastic spring that is suspended from a ceiling. If the weight is pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=2cos(5ðt+ð/3). Find the first two times for which the ...
*Friday, May 2, 2014 by Lira*

**Physics/Algebra**

Physics: For a 225-watt bulb, the intensity I of light in lumens at a distance of x feet is I=225/x^2. a. What is the intensity of light 5 ft from the bulb? b. Suppose your distance from the bulb doubles. How does the intensity of the light change? Explain.
*Thursday, May 1, 2014 by Sandra*

**Algebra**

Word problem: A new photocopier can make 72 copies in 2 min. When the older photocopier is operational, the two photocopiers together can make 72 copies in 1.5 min. How long would it take the older photocopier to make 72 copies working alone? Show work.
*Thursday, May 1, 2014 by Sandra*

**Algebra**

Divide this rational expression and polynomial (12x^2 + 9x-7)/(3x)
*Thursday, May 1, 2014 by Sandra*

**algebra**

(y^2 - y + 2)/(y + 2) I put this in calc101 . com and I got an answer with y - 3 in the quotient and got 8 in thr remainder area. My answer key says the answer is y - 3 + 8/y + 2. Can someone explain how the answer key has this answer?
*Thursday, May 1, 2014 by Anonymous*

**College Algebra and Trigonometry **

A weight is attached to an elastic spring that is suspended from a ceiling. If the weight s pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=(5pt+p/3. Find the first two times for which the displacement s 1.5 inches...
*Wednesday, April 30, 2014 by Madlyn Roberts*

**Algebra**

F = Av^2/400, for v (Force of wind on a sail)
*Wednesday, April 30, 2014 by Boo*

**Algebra**

A scientist wants to research the potential spread of germs by contact. She knows that the number of possible handshakes within a group of n people is given by the equation N=1/2(n^2-n). Everyone at a party shook hands. There were 253 handshakes in all. How many people ...
*Wednesday, April 30, 2014 by Pam*

**Algebra**

$5400 is invested, part of it at 10%, and part of it at6%. For a certain year, the total yield is $444.00. How much was invested at each rate?
*Wednesday, April 30, 2014 by Pam*

**Algebra 2**

Can someone please explain how to do this problem? A 450 foot tall building is near a shorter building. A person on top of the shorter building finds the angle of elevation of the roof of the taller building to be 25 degrees and the angle of depression of its base to be 35 ...
*Wednesday, April 30, 2014 by Jane*

**Algebra**

Using the ac method factor the trimonials. 15x^2 + 31x+2=
*Wednesday, April 30, 2014 by Michele*

**algebra**

A rectangular garden is fenced on thee sides with a wall forming the fourth side. The total length of the fence is 70m. The area of the garden is 600m^2. Find the dimensions of the garden.
*Wednesday, April 30, 2014 by Tony *

**Pre algebra**

A bag of balloons contain 2 red balloons, 1 green balloon, 17 yellow balloons, and 8 orange balloons. What is the probability that a randomly selected balloon would be green or orange? I got 9/28, but I think that's wrong
*Wednesday, April 30, 2014 by Allie*

**Algebra**

Factoring 9w-w^3
*Wednesday, April 30, 2014 by Tracy*

**algebra**

Statistical information for a data set is given. • The mean is 18.1 • The z-score for 13.0 is -1.7 What is the standard deviation for this data set? f 3.4 g 1.7 h 5.1 j 3.0
*Wednesday, April 30, 2014 by LALALA*

**Algebra**

Using the ac method factor the trimonials. 15x^2 + 31x+2=
*Wednesday, April 30, 2014 by Michele*

**algebra 1**

a glider flies 8 miles south then 15 miles east then flies in a straight line back to the airport. what was the distance of the gliders last leg back to the air port
*Wednesday, April 30, 2014 by lal*

**algebra 1**

jan goes 6 kilometers east from home. mell goes 8kilometers north. how many kilometers are there schools apart. use Pythagorean theorem
*Wednesday, April 30, 2014 by lal*

**Pre-Algebra**

Write an expression for the model. Find the sum. A. 2 + 3; 5 B. 2 + (–3); 1 C. 2 + (–3); –1 D. –3 + 2; 5
*Wednesday, April 30, 2014 by Storm*

**Algebra 1/2**

The spinner is spun twice. What is the probability it will stop on either 3 or 5 the first time and will stop on 2 the second time?
*Wednesday, April 30, 2014 by Maria*

**algebra**

if 11% of the 210 million adult Americans live in poverty, how many adult American live in poverty? Thank you for your help
*Wednesday, April 30, 2014 by Mary Ann*

**Algebra 2**

5TO THE 4XPOWER=90
*Wednesday, April 30, 2014 by denise*

**algebra**

If a 204-mile trip took 8 1/2 gallons of gas, how many miles can be driven with a full tank of 20 gallons Thank you for your help and it is appreciated,
*Wednesday, April 30, 2014 by Mary Ann*

**Algebra 2**

4x=log base 5 of 90
*Wednesday, April 30, 2014 by denise*

**Algebra 2**

log base 3of 6 + log base3 (3x + 1) = 2
*Wednesday, April 30, 2014 by denise*

**Algebra 2**

five to the 4xpower = 90
*Wednesday, April 30, 2014 by denise*

**algebra**

an apple pie is cut into 6 slices each slice is solid for 2$ the radius of the pie is 3.5 inches the central angle of the of the remaining pie is 120
*Wednesday, April 30, 2014 by Trashelle*

**Algebra 2**

log©ý 6 + log©ý (3x + 1) = 2
*Wednesday, April 30, 2014 by denise*

**Algebra 2**

Solve the equation. Round your answers to four decimal places. Show all of your work! a. 54x = 90
*Wednesday, April 30, 2014 by denise*

**College Algebra and Trigonometry**

A weight is attached to an elastic spring that is suspended from a ceiling. If the weight s pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=(5pt+p/3. Find the first two times for which the displacement s 1.5 inches.
*Wednesday, April 30, 2014 by Madlyn Roberts*

**algebra**

a certain test us worth 125 points (rounded to the nearest point are need to obtain a score of 75%
*Tuesday, April 29, 2014 by Mary*

**algebra**

if you multiply a number by 4 and than subtract negative 10, the difference is a negative 26. what is the number
*Tuesday, April 29, 2014 by Mary*

**algebra**

the pitch of a roof is the ratio of the rise to half span. If a roof has a rise of 6 feet and a span of 20 feet what is the pitch. Thank you
*Tuesday, April 29, 2014 by Mary *

**Algebra 1 math**

Deborah rolls two fair dice. What is the probability that the sum of the numbers rolled is 7?
*Tuesday, April 29, 2014 by HELP PLEASE*

**algebra**

Write a ratio in simplified form of the area of the shaded figure to the area of the figure which encloses it. I have a square with height 5w and width 5w. Enclosing it are a right triangle on each side, which have a width of 6 and have the square's height (5w) also ...
*Tuesday, April 29, 2014 by Anonymous*

**Algebra**

Simplifing rational expressions Simplify the expression & state any excluded values: (2s^2 - 5s - 12) / (2s^2 - 9s + 4)
*Tuesday, April 29, 2014 by Sandra*

**Algebra**

89, 88, 78, 95, 92 Sadye has the Algebra test scores shown. If her goal is to have a test average of 90 or higher what is the lowest score she can make on her next test and still achieve her goal? Note: scores are not rounded.
*Tuesday, April 29, 2014 by Daizha*

**algebra 1**

The Ricco family filled the gasoline tank of their car at the beginning of a long trip. Their car used gasoline at the rate of 1 gallon every 21 miles. When they stopped for lunch, they had driven 315 miles, and there were 9 gallons of gasoline left in the tank. How many ...
*Tuesday, April 29, 2014 by Anonymous*

**algebra 1**

Mrs. Hernandez owns a computer training business. She charges a lab fee plus an hourly fee to train office workers on various software programs. It costs $265.00 to attend a 6-hour course and $345.00 for an 8-hour course. Which equation relates x, the number of hours in the ...
*Tuesday, April 29, 2014 by Anonymous*