Sunday

August 2, 2015

August 2, 2015

**Algebra, help please!!!**

The youngest person in the company is 21. The oldest is 66. A: What is the range? B: Is the range a good measure of spread for the ages in the company? Why?
*Wednesday, November 19, 2014 by Ashley*

**Algebra, help please!!!**

Find the mean and the median in the following arithmetic sequences: A: 1, 3, 5, 7, 9 B: 1, 3, 5, 7, 9, . . . ., 199 C: 7, 10, 13, 16, . . ., 607
*Wednesday, November 19, 2014 by Ashley*

**Algebra **

I already posted this question, I just wanted to clarify my answer. Problem: When Frederick was born, his grandparents gave hime a gift of $2000, which was invested at an interest rate of 5% per year, compounded yearly. How much money will Frederick have when he collects the ...
*Wednesday, November 19, 2014 by Trish Goal*

**algebra 2**

find the domain y=-ãx-5 +3
*Wednesday, November 19, 2014 by nancy*

**Algebra**

Gerry had a total of 30 pens and pencils. He decided to trade with his friends all of his pens and pencils. If he traded every pen for 2 pencils, he would have 48 pencils in all. How many pens and how many pencils did he have before the trade?
*Wednesday, November 19, 2014 by Ana*

**Algebra**

The income from a student production was $15,000. The price of a student ticket was $3, and nonstudent tickets were sold at $5 each. Four thousand tickets were sold. How many tickets of each kind were sold?
*Wednesday, November 19, 2014 by Anonymous*

**Algebra **

Solve for x, when (2^(x+1)^3)*4^x=8192.
*Wednesday, November 19, 2014 by Trish Goal*

**algebra**

Mindy picked 4 times as many daisies as tulips for a flower bouquet. She picked a total of 20 flowers. How many more daisies than tulips did she pick?
*Wednesday, November 19, 2014 by tazmin*

**Algebra 2**

let f(x)=7x+4 and g(x)= 3x-9 g(f(x))
*Wednesday, November 19, 2014 by Anonymous*

**Algebra **

Given that 2^x+2^x+2^x+2^x=512, what is the value of x? I think it simpliflies to 2^4x=512. and 2^9=512 but to get 9 you have to mulitply something to 4, but its 2.25 is that right?
*Wednesday, November 19, 2014 by Trish Goal*

**Algebra Two**

let f(x)=7x+4 and g(x)= 3x-9 f(x)*g(x)
*Wednesday, November 19, 2014 by Anonymous*

**algebra 1**

how do i solve -4x-2y=-12 and 4x+8y=-24 using the elimination method?
*Wednesday, November 19, 2014 by lexi*

**Algebra**

If an apartment complex will need painting in 3 1/2 years and the job will cost $45,000, what amount needs to be deposited into an account now in order to have the necessary funds? The account pays 12% interest compounded semiannually.
*Wednesday, November 19, 2014 by Virginia*

**Algebra 2 **

Simplify 2x*x^7/4
*Wednesday, November 19, 2014 by Anonymous*

**Algebra**

One hour = 3,600 seconds and 1 mile= 5,280 feet. MAke a conjecture about how you could convert a speed of 15 miles per hour to feet per second. Then convert please help answer
*Wednesday, November 19, 2014 by Steph*

**Algebra**

What is the result if you multiply a number of cups by 8 fl oz/ 1 cup and then multiply the result by 1 cup/ 8 fl oz? Give an example thx
*Wednesday, November 19, 2014 by Steph*

**Algebra help**

A class 4 truck weighs between 14,000 and 16,000 pounds. What is the weight range in tons? b. If the weight of. Class 4 truck is increased by 2 tons, will it still be classified as a class 4 truck? Explain both thanks
*Wednesday, November 19, 2014 by Lana*

**Algebra please help out**

How would you convert 5 feet 6 inches to inches?
*Wednesday, November 19, 2014 by Steph *

**Algebra please help out**

In Beijing in 2008, the women's 3,000 meter steeplechase became an Olympic event. What is this distance in kilometers? Please help answer thx
*Wednesday, November 19, 2014 by Steph *

**Algebra **

When Frederick was born, his grandparents gave hime a gift of $2000, which was invested at an interest rate of 5% per year, compounded yearly. How much money will Frederick have when he collects the money at the age of 18? gGive your answer to the nearest hundreth of a dollar.
*Wednesday, November 19, 2014 by Trish Goal*

**Algebra **

Solve for x: (1/25)^x+2=125^-x
*Wednesday, November 19, 2014 by Trish Goal*

**Algebra**

Solve the inequality 1. m - 7 < 6 2. x + 4.5 more than or equal to 5.5 3.p + 12 > 9 4. Translate the following statement into an inequality: Five less than a number is at least nine. x - 5 more than or equal to 9 Show me how you did the work please?
*Wednesday, November 19, 2014 by Annie*

**Algebra Help! Please**

Ok so I did what you told me reiny but I cant figure out number three which is here 10x - 2 - 6x = 3x - 2 + x Please show how You did it please?
*Wednesday, November 19, 2014 by Jeff*

**ALGEBRA Help Please**

Decide whether each equation has one solution, no solution or infinitely many solutions 2(x - 3) = 2x 3(y - 3) = 2y - 9 + y 10x - 2 - 6x = 3x - 2 + x 4(x + 3) + 2x = x - 8 Please Show how you did it if possible please thanks! :)
*Wednesday, November 19, 2014 by Jeff*

**Algebra**

A kite is tied to the ground. The rays from the sun hit the kite perpendicular to the kite string, casting a shadow of the kite on the ground. The coordinates in the diagram are given in feet. What is the distance from where the kite is tied to the shadow? Coordinates are (3,...
*Wednesday, November 19, 2014 by Rachel*

**algebra**

Monigue and Tasha are traveling on the same highway to family reunion at a park. Monique starts out 225 miles from the park and drives 70 miles per hour. Tasha starts out 200 miles from the park and drives 65 per hour. Write an equation for Monique`s where y is the total ...
*Tuesday, November 18, 2014 by Imaya*

**Algebra please help out **

If the number in the numerator of a unit rate is 1, what does this indicate about the equivalent unit rates? Please help answer and give an example. Thanks
*Tuesday, November 18, 2014 by Steph *

**Algebra please help out **

Jason watched a caterpillar move 10 feet in 2 minutes. Jason says that the caterpillars unite rate is 0.2 feet per minute. Is jason correct. Please explain. Thanks
*Tuesday, November 18, 2014 by Iana*

**Algebra 2**

More About Complex Numbers Multiply (4+3i)(1-i) Please show work i need help
*Tuesday, November 18, 2014 by Alicia*

**Algebra**

A machine can produce 27 inches every 3 minutes. How many feet of ribbon can the machine make in one hour? Explain
*Tuesday, November 18, 2014 by Iana*

**Algebra 2**

More About Complex Numbers Find the reciprocal. -1-i 2i
*Tuesday, November 18, 2014 by Alicia*

**Algebra 2**

More About Complex Numbers Find the conjugate of each number. 1.)squ root of 3-7/8i 2.) 2-mi 3.) 6 Please show work I need help
*Tuesday, November 18, 2014 by Alicia*

**Algebra 2**

More About Complex Numbers Multiply (4+3i)(1-i) Please show work i need help
*Tuesday, November 18, 2014 by Alicia*

**Algebra**

Rachel sent or received 10,290 text messages in the month of September. If each text message over the first 150 messages cost 8 cents, what was her texting bill? $126,750 Explain how you got your answer. I subtracted 10,290 by 150 then I divided 10,140 by 0.08 and I got 126,...
*Tuesday, November 18, 2014 by Help!!!*

**Algebra 2**

More About Complex Numbers: Solve x and y 4x+5y+13i=7+(6x+5y)i Please show work because I had a hard time finding the answer
*Tuesday, November 18, 2014 by Alicia*

**algebra**

The monthly income I, in dollars, from a new product is given by I(t) = 81000 − 45000e^-0.005t where t is the time, in months, since the product was first put on the market. (Round your answers to the nearest dollar amount.) (a) What was the monthly income after the 30th...
*Tuesday, November 18, 2014 by Barb*

**algebra**

Lead shielding is used to contain radiation. The percentage of a certain radiation that can penetrate x millimeters of lead shielding is given by I(x) = 100e^−1.5x. What percentage of radiation, to the nearest tenth of a percent, will penetrate a lead shield that is 1 ...
*Tuesday, November 18, 2014 by Barb*

**algebra**

Solve for x and x+2y=10 3x-y=9
*Tuesday, November 18, 2014 by olive*

**algebra**

what is one fourth of thirteen?
*Tuesday, November 18, 2014 by Algebra*

**Algebra**

The heat generated by a stove element varies directly as the square of the voltage and inversely as the resistance. If the voltage remains constant, what needs to be done to triple the amount of heat generated? I need to know why this makes sense or not.
*Tuesday, November 18, 2014 by Candy*

**Algebra**

The Hubble Space Telescope can see stars and galaxies where brightness is 1/50 of the faintest objects now observable using ground-based telescopes. Use the fact that the brightness of a point source, such as a star, varies inversely as the square of its distance from an ...
*Tuesday, November 18, 2014 by Mickey*

**Algebra**

In a hurricane, the wind pressure varies directly as the square of the wind velocity. If wind pressure is a measure of a hurricane’s destructive capacity, what happens to this destructive power when the wind speed doubles? Do you have an equation to prove if this makes ...
*Tuesday, November 18, 2014 by SMS*

**algebra 1**

cube root of (-64x^8y^5) Is it -8x^2y times the cube of y^2?
*Tuesday, November 18, 2014 by matt*

**algebra 1**

cube root of (-64x^8y^5)
*Tuesday, November 18, 2014 by matt*

**Algebra Help**

Last one 3(x - 4) = 5(x + 2) Please show how you did it
*Tuesday, November 18, 2014 by Jeff*

**Algebra Help **

8x – 3 = 15x + 18 x = –3 x = 3 x = 2.1 x = .9 Can you show how you did it please?
*Tuesday, November 18, 2014 by Jeff*

**algebra**

Jena and Cindy, Working together can clean the house in 10 hours. Working alone, cindy takes twice as long as jena. How longs does it take jena to clean the house.
*Tuesday, November 18, 2014 by Anonymous*

**algebra**

A car rents for 30.00 per day plus 19 cent per mile. You are on a daily budget of 87.00. What mileage will allow you to stay within your budget
*Tuesday, November 18, 2014 by kimmie*

**algebra worksheet help please **

Fiber-optic cables are used widely for Internet wiring, data transmission, and surgeries. When light passes through a fiber-optic cable, its intensity decreases with the increase in the length of the cable. If 1,500 lumens of light enter the cable, the intensity of light ...
*Monday, November 17, 2014 by Destiny*

**algebra**

If a car traveling at 50 mph requires 170 ft to stop, find the stopping distance for a car traveling at v2 = 60 mph.
*Monday, November 17, 2014 by Irma*

**Algebra - rate of change help**

The price of products may increase due to inflation and decrease due to depreciation. David is studying the change in the price of two products, A and B, over time. The price f(x) in dollars, of product A after x years is represented by the function below. f(x)=0.69(1.03)^x 1....
*Monday, November 17, 2014 by Destiny*

**Algebra - quick question**

What is the average rate of change formula for exponential growth functions?
*Monday, November 17, 2014 by Destiny*

**Algebra - Can you PLEASE check - I"m stuck!**

Bob is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: F(N)=10(1.02)^n 1. Starting from 0 days, plug x-values into our function to find out how many days it takes for the plant to...
*Monday, November 17, 2014 by Jake*

**Algebra - can you PLEASE double check my work?**

Part A: Use the properties of exponents to explain why is called the fifth root of 18. 1. What property refers to roots and fractional powers? My Answer: Rule of exponents 2. How does it apply to 18^1/5? If you multiply 18^1/5 by itself 5 times, you get 18. Part B: The length ...
*Monday, November 17, 2014 by Jake*

**Algebra**

The number of bass in a lake is given by P(t) = 2800/1 + 6e^−0.05t where t is the number of months that have passed since the lake was stocked with bass. (a) How many bass were in the lake immediately after it was stocked? 400 bass (b) How many bass were in the lake 1 ...
*Monday, November 17, 2014 by Kimberly*

**algebra**

When Charlotte planted her tomato plant, it grew 3 inches in one week. After 5 weeks, the tomato plant was 23 inches tall. Assume the relationship is linear. Find and interpret the rate of change and the initial value.
*Monday, November 17, 2014 by natalie*

**algebra**

The number of bass in a lake is given by P(t) = 2800/1+6e^-0.05t where t is the number of months that have passed since the lake was stocked with bass. (a) How many bass were in the lake immediately after it was stocked? ? bass (b) How many bass were in the lake 1 year after ...
*Monday, November 17, 2014 by Barb*

**algebra**

A cup of coffee is heated to 180°F and placed in a room that maintains a temperature of 65°F. The temperature of the coffee after t minutes is given by T(t) = 65 + 115e^−0.042t.(a) Find the temperature, to the nearest degree, of the coffee 10 minutes after it is ...
*Monday, November 17, 2014 by Barb*

**algebra**

Lead shielding is used to contain radiation. The percentage of a certain radiation that can penetrate x millimeters of lead shielding is given by I(x) = 100e^−1.5x. What percentage of radiation, to the nearest tenth of a percent, will penetrate a lead shield that is 1 ...
*Monday, November 17, 2014 by Barb*

**algebra**

The monthly income I, in dollars, from a new product is given by I(t) = 81000 − 45000e^-0.005t where t is the time, in months, since the product was first put on the market. (Round your answers to the nearest dollar amount.) (a) What was the monthly income after the 30th...
*Monday, November 17, 2014 by Barb*

**algebra**

The function A(t) = 200e^-0.014t gives the amount of medication, in milligrams, in a patient's bloodstream t minutes after the medication has been injected into the patient's bloodstream. (a) Find the amount of medication, to the nearest milligram, in the patient's...
*Monday, November 17, 2014 by Barb*

**english**

Elnora unlocked the case, took out the pail, put the napkin in it, pulled the ribbon from her hair, binding it down tightly again and followed to the road. From afar she could see her mother in the doorway. She blinked her eyes, and tried to smile as she answered Wesley ...
*Monday, November 17, 2014 by 2phoneeeeee *

**algebra**

The expression 3x² represents
*Monday, November 17, 2014 by kelcie*

**Algebra**

Write the simplest polynomial function with zeros five and -4. K(x) = x^2 - x - 20?
*Monday, November 17, 2014 by Anonymous*

**Algebra Work Check**

Find the roots of x^4 - 16 = 0. √ x^4 = √ 16 x^2 = 4 √ x^2 = ± √ 4 2,-2
*Monday, November 17, 2014 by Anonymous*

**algebra**

A boat can travel 29 mph. If it travels 217 miles with the current in the same lenght of the time it travels 189 against the current? What is the current
*Monday, November 17, 2014 by Brit*

**algebra**

student takes out two loans 1 at 10% and the other at 12 percent interest the 10 percent loan is $2000 more then the 12% loan and the total interest for one year is $430 how much is each loan?
*Monday, November 17, 2014 by Chris*

**algebra**

Given: Perimeter= 20 in Area= 15 sq. in Find hypotenuse= ?
*Monday, November 17, 2014 by ferdinand*

**math (algebra)**

explain how to evaluate an expression with a variable when you are given a value for the variable
*Monday, November 17, 2014 by ary *

**college algebra**

Suppose that the Russian population is declining by 0.48% each year, and continues to decline at this rate every year. a.) what is the overall 'growth' factor (really a decline factor) for 40 years of population decline? As a percentage of the current population, what ...
*Monday, November 17, 2014 by danielle*

**algebra 2**

h(t)=-4.9t^2+30.5t+8.5
*Sunday, November 16, 2014 by Jesse*

**algebra**

w(3w-1)=200 solve for w
*Sunday, November 16, 2014 by Jen*

**intermediate algebra**

A model rocket Is launched from a height of 50ft. The formula h=-16t^2+70t +50 describes the rocket's height,h,in feet seconds after it was launched. How long will it take the rocket to reach to reachthe ground?
*Sunday, November 16, 2014 by Nellie*

**Math Elementary Linear Algebra**

determine whether or not the given set forms a basis for the indicated subspace: #1 {1,1,0), (1,1,1)} for the subspace of R^3 of all (x,y,z) such that y= x+z #2 {[1,2,-1,3), (0,0,0,0)} for the subspace of R^4 of all vectors of the form (a,b, a-b,a+b) and #3 {(2,0,2), (1,1,1)} ...
*Sunday, November 16, 2014 by Anna*

**Math:Algebra**

Maya has 2 times as many apples as Ally if Ally has 87 apples how many apples dose Maya have now? Maya's sister takes some away. Write an algebraic expression that represents the amount of apples they have now?
*Sunday, November 16, 2014 by Rayan*

**algebra**

Graph the piecewise function given by f(x)= -1/3x +2, x<0 x-5,x>0
*Sunday, November 16, 2014 by gail*

**Math (Algebra 1)**

Juan’s first 3 exam scores are 85, 93, and 87. What does he need to score on his next exam to average 90 for all 4 exams? let x represent the score on his next exam (put this in a multi-step equation) PLEASE HELP
*Saturday, November 15, 2014 by Nicole*

**Algebra**

Al¡¦s Rentals charges $25.00 per hour to rent a sailboard and a wet suit. Wendy¡¦s Rentals charges $20.00 per hour plus $15.00 extra for a wet suit. Find the number of hours for which the total charges for both companies would be the same. ƒ&...
*Saturday, November 15, 2014 by Taylor*

**Algebra: Steve **

I already asked this question,I just wanted to clarify the answer. Problem: The polynomial f(x) has degree 3. If f(-1)=15, f(0)=0, f(1)=-5, f(2)=12, then what are the x-intercepts of the graph of f? Steve: clearly, f(0) = 0 so, f(x) = ax^3+bx^2+cx = x(ax^2+bx+c) -1(a-b+c) = 15...
*Saturday, November 15, 2014 by Trish Goal*

**algebra**

a guy earns twice
*Saturday, November 15, 2014 by ify*

**Algebra 1 Check My Answer Please.**

2.Find the slope of a line that passes through (–2, –3) and (1, 1). The fraction one third.< 1 2 The fraction four thirds. 3.For the equation –4y = 8x, what is the constant of variation. –4 –2 1 < 2 4.Suppose y varies directly with x, and y = 24 ...
*Saturday, November 15, 2014 by Mia*

**Algebra 1**

2.Find the slope of a line that passes through (–2, –3) and (1, 1). The fraction one third. 1 2 The fraction four thirds. 3. For the equation –4y = 8x, what is the constant of variation? (1 point) –4 –2 1 2 4.Suppose y varies directly with x, and y = ...
*Saturday, November 15, 2014 by Mia*

**Advanced Algebra **

The volume V (r) of a sphere is a function of its radius r. Suppose a spherical snowball with a radius 2 f t started to melt so that the radius is changing at a constant rate of 4.5 inches per minute. If f(t) feet is the radius of the snowball after t minutes, do the following...
*Saturday, November 15, 2014 by Renzo*

**Advanced Algebra **

If a pond can support up to 10, 000 fish, the rate of growth of the fish population is jointly proportional to the number of fish present and the difference between 10, 000 and the number of fish present. The rate of growth is 90 fish per week when 1, 000 fish are present. a. ...
*Saturday, November 15, 2014 by Francis*

**Advanced Algebra **

A sign containing 50 m^2 of printed material is required to have margins of 4 m at the top and bottom and 2 m on each side. a. Find a mathematical model expressing the total area of the sign as a function of the horizontal dimension of the region covered by the printed ...
*Saturday, November 15, 2014 by Darone*

**Advanced Algebra (Infinite Geometric Series)**

Convert 8.690909 . . . into a single fraction using infinite geometric series.
*Saturday, November 15, 2014 by Alecx*

**Advanced Algebra **

What is the inverse of each of the functions defined by the following equations, if the inverse exists. If the inverse does not exist for the largest possible domain, limit the domain so that the inverse will exist. In each case, give the domain and range of both the function ...
*Saturday, November 15, 2014 by Keith*

**Advanced Algebra **

The polynomial function defined by f(x) = 1 − x + x^2 − x^3 + ... + x^16 − x^17 may be written in the form f(y) = a_0 + a_1 y + a_2 y^2 + ... + a_16 y^16 + a_17 y^17, where y = x + 1 and a_i s are constants. Find a_2.
*Saturday, November 15, 2014 by Frank*

**pre algebra**

a total of 400 tickets were sold for the school play, they were either adult tickets or student tickets. there were 50 fewer student tickets sold than adult tickets. how many adult tickets were sold
*Saturday, November 15, 2014 by denise*

**Algebra **

The polynomial f(x) has degree 3. If f(-1)=15, f(0)=0, f(1)=-5, f(2)=12, then what are the x-intercepts of the graph of f?
*Friday, November 14, 2014 by Trish Goal*

**Algebra **

There is a polynomial which, when multiplied by x^2+2x+3, gives 2x^5+3x^4+8x^3+8x^2+18x+9. What is the polynomial?
*Friday, November 14, 2014 by Trish Goal*

**college algebra**

Find Functions with Given Zeros √2, -√2, 3
*Friday, November 14, 2014 by maria*

**Algebra **

Find t if the expansion of the product of x^3-4x^2+2x-5 and x^2+tx-7 has no x^2 term.
*Friday, November 14, 2014 by Trish Goal*

**Algebra **

Suppose f is a polynomial such that f(0)=47, f(1)=32,f(2)=-13, and f(3)=16. what is the sum of the coefficients of f?
*Friday, November 14, 2014 by Trish Goal*

**Algebra **

Find the leading coefficeint in the polynomial -3(x^4-x^3+x)+7(x^4+2)-4(2x^4+2x^2+1) after it is simplified. I got this -3x^4+3x^2-3x+7x^4+14-8x^4-8x^2-4 and I simplified it to -4x^4-5x^2+10 so what would the leading coeffiecient be -4?
*Friday, November 14, 2014 by Trish Goal*

**algebra**

A contestant on a game show must guess the price of a new car. The contestant will win if his guess is within $1000 of the price of the car. If the price of the car is $24,995 and the contestant's guess is represented by g, what absolute value inequality represents this ...
*Friday, November 14, 2014 by Anonymous*

**algebra**

The area of a rectangle formula is A = lw. Suppose that the width is 5 less than the length. Express area as a function of the width.
*Friday, November 14, 2014 by gail*

**Algebra**

ã2x -4 = ã7x + 9 Don't' have a clue. I tried squaring both sides to get rid of the square root but it just isn't working.
*Friday, November 14, 2014 by Angie*

**Algebra**

What is the equation in the slope intercept form for the line that passes through the points (1,-3) and (3,1)? Y=3x+1 Y=x-3 Y=2x+5 Y=2x-5
*Friday, November 14, 2014 by Rachel*

**Intermediate Algebra**

Suppose you have a credit card debt of $6000. Last month, the bank charged you $85 interest on the deb. The solution to the equation is 85=6000/12 r represents the annual interest rate on the credit card. Find the annual interest rate on the credit card. 85*12=1020 1020/6000 =...
*Friday, November 14, 2014 by Anonymous1234*