Friday

April 17, 2015

April 17, 2015

**Recent Homework Questions About Algebra**

**Algebra**

Find an equation that has the given solutions. (Assume the equation has a degree of 3.) x = −5, x = 5, x = 2/3
*Friday, April 17, 2015 at 5:41pm*

**Algebra**

Solve the following quadratic equation by completing the square. (Enter your answers as a comma-separated list.) a^2-12a+52=0
*Friday, April 17, 2015 at 5:31pm*

**Algebra**

Find an equation that has the given solutions. (Assume the equation has a degree of 2.) a=-1/3, a=3/7
*Friday, April 17, 2015 at 5:27pm*

**Algebra**

Use the properties of exponents to simplify the following as much as possible. Assume the bases are positive. (8a^3b^6)^(1/3) / (16a^8b^−4)^(1/4)
*Friday, April 17, 2015 at 5:25pm*

**Algebra**

Solve each equation using the quadratic formula. (Enter your answers as a comma-separated list.) x^2 -2x +10=0
*Friday, April 17, 2015 at 5:17pm*

**Algebra**

Solve each equation using the quadratic formula. (Enter your answers as a comma-separated list.) x^2-2x+2=0
*Friday, April 17, 2015 at 5:16pm*

**Algebra**

Solve the equation. Use factoring or the quadratic formula, whichever is appropriate. Try factoring first. If you have any difficulty factoring, then go right to the quadratic formula. (Enter your answers as a comma-separated list.) (x+2)^2 + (x-7)(x-2)=16
*Friday, April 17, 2015 at 5:15pm*

**Algebra**

An object is thrown downward with an initial velocity of 4 feet per second. The relationship between the distance s it travels and time t is given by s = 4t + 16t2. How long does it take the object to fall 72 feet?
*Friday, April 17, 2015 at 5:13pm*

**Algebra**

a car driver accelerates to a speed of 35 miles per hour and then takes her foot off the gas pedal even though she does not press the brake pedal at any time she eventually rolls to a stop which of the following most likely causes the car to come to a stop
*Friday, April 17, 2015 at 12:39pm*

**algebra**

the weight (in kg) of each student in a group of students is 9 times his height (in feet) write a linear equation with x representing the height (in feet) and y representing the weight i kg of the student
*Friday, April 17, 2015 at 7:13am*

**algebra**

1. a chemical compound requires 8 ounces of chemical a and 12 ounces of chemical b. a mixture contains 24 ounces of chemical a and 30 ounces of chemical b. how can you fix the mixture to make the chemical compound? 2. in an animal shelter, the ratio of cats to dogs is 5 to 3. ...
*Friday, April 17, 2015 at 2:16am*

**Algebra (check my work?)**

1. Write a proportion using an unknown value x and the ratio 5:6 then solve it. 5/6 = x/12 6 * 2 = 12 5 * 2 = 10 x = 10 2. In an orchestra, the ratio of trombones to violas is 1 to 3. There are 9 violas, Write a proportion that gives the number t of trombones in the orchestra...
*Friday, April 17, 2015 at 12:49am*

**Math**

6X+5Y=7X+3Y=2(X+6Y-1) solve by algebra method
*Thursday, April 16, 2015 at 11:32pm*

**Algebra**

5. The local soccer team won the championship a several years ago, and since then, ticket prices have been increasing $20 per year. The year they won the championship, tickets were $50. Write a recursive formula for a sequence that will model ticket prices. Is the sequence ...
*Thursday, April 16, 2015 at 11:31pm*

**Intermidiate Algebra**

I need someone to please help show me how to simplify radicals. 27 -2/3 ____ 27 -1/3
*Thursday, April 16, 2015 at 9:24pm*

**algebra**

the isotope has a very short life of 13 half-life days. estimate the percentage of the original amount of the isotope released by the explosion that remains 3 days after the explosion?
*Thursday, April 16, 2015 at 5:11pm*

**Algebra**

Write a proportion using an unknown value x and the ratio 5:6 then solve it. In an orchestra, the ratio of trombones to violas is 1 to 3. There are 9 violas, Write a proportion that gives the number t of trombones in the orchestra. How many trombones are in the orchestra? The ...
*Thursday, April 16, 2015 at 3:47pm*

**algebra**

A country's population in 1993 was 171 million estimate the population in 2012 using the exponential growth formula round your answer to the nearest million?
*Thursday, April 16, 2015 at 11:41am*

**Algebra 1**

How many seconds would it take an egg to hit the ground if it's at a 363 height range?
*Thursday, April 16, 2015 at 9:35am*

**Algebra**

When Will the dependent variable in the equation y= the square root of x+4(end of square root)-3 equal or exceed 4?
*Thursday, April 16, 2015 at 8:15am*

**ALGEBRA 2 (LOGARITHMIC FUNCTIONS) **

These are some I chose to practice but I have a hard time knowing how to do it. The answers are online but that doesn't help. These deal with logarithmic functions etc. PLEASE HELP! THANKYOU 1.)solve the equation: 3^(x+1)=27^(x+3) 2.) e^x=5 3.) 2^(3x)+9=25 4.) 4^(x+1)=21 5...
*Wednesday, April 15, 2015 at 11:55pm*

**Algebra 2**

How many arrangements are possible using the letters in the word FUZZY if each letter "Z" is distinctly different than the other? How many arrangements are possible if the letter "Z" is interchangeabe with the other? Explain your reasoning.
*Wednesday, April 15, 2015 at 11:40pm*

**algebra**

what is the first step when solving x/15=3/5? write a proportion using an unknown value x and the ratio 5:6 then solve it. in an orchestra, the ratio of trombones to violas is 1 to 3. a. there are 9 violas. write a proportion that gives the number t of trombones in the ...
*Wednesday, April 15, 2015 at 10:31pm*

**ALGEBRA PLSSSSSS**

For the function f(x)=x^2-12, find (f o f^-1)(4)
*Wednesday, April 15, 2015 at 6:47pm*

**ALGEBRA PLSSSSSS**

For the function f(x)=x+9, find (f o f^-1)(5)
*Wednesday, April 15, 2015 at 6:46pm*

**ALGEBRA PLSSSSSS**

For the function f(x)=(8-2x)^2, find f^-1. Determine weather f^-1 is a function.
*Wednesday, April 15, 2015 at 6:44pm*

**ALGEBRA PLSSSSSS**

What is the inverse of the given function? y=7x^2-3
*Wednesday, April 15, 2015 at 6:42pm*

**ALGEBRA PLSSSSSS**

Let f(x)=x+2 and g(x)=x^2. Find (g o f)(-5)
*Wednesday, April 15, 2015 at 6:41pm*

**ALGEBRA PLSSSSSS**

f(x)=x^2-16 and g(x)=x+4 find f/g and its domain.
*Wednesday, April 15, 2015 at 6:39pm*

**algebra PLSSSSSS**

Let f(x)=3x-6 ang g(x)=x-2 find f/g and its domain.
*Wednesday, April 15, 2015 at 6:38pm*

**linear algebra**

Let L: R2 ¨ R2 be a linear transformation for which we know that L(1 1)= [-2 1] L(-1 1)=[3 2] a)what is L(-1 5) b)what is L(u v)?
*Wednesday, April 15, 2015 at 8:10am*

**Algebra**

Find the following quotient. (4-7i)/(4+7i)
*Wednesday, April 15, 2015 at 7:12am*

**Algebra**

Factor the follwoing as if this were a trinomial 4t^5/4 - 9
*Wednesday, April 15, 2015 at 7:09am*

**algebra**

I need some help with this math problem: Let n be the number of oil refineries at t years since 2005. A reasonable model of oil refineries is n= -2.23t + 210.53. What is the slope of this model? What does it mean in this situation?
*Wednesday, April 15, 2015 at 12:19am*

**Algebra **

Find an angle with a positive measure and an angle negative measure that are coterminal with each angle. 1. 370 degrees 2. -3π /4 3. 5 π/2 pi sign = π
*Tuesday, April 14, 2015 at 6:18am*

**algebra**

A package is dropped from a helicopter at 1600 feet. The height of the package can be modeled by: h = -16t squared + 1600 , where h is the height of the package in feet and t is the time in seconds. How long will it take for the package to hit the ground?
*Monday, April 13, 2015 at 7:42pm*

**Algebra**

The sum of two numbers is 44. The smaller number is 6 less than the larger number. What are the numbers? How do I solve this?
*Monday, April 13, 2015 at 7:35pm*

**Intermediate Algebra**

Compound Inequalities Definition Words ◦Compound inequalities ◦And ◦Or ◦Intersection ◦Union 1). 12 < 12 + 4x < 0 2). 12 – x > 15 or 7x – 13 > 1 I divide it up the compound inequalities into two problems 12 <12+ 4x 4 x >...
*Monday, April 13, 2015 at 7:33pm*

**Algebra 1**

What is the excluded value of the rational expression? 2x+6 / 4x-8
*Monday, April 13, 2015 at 7:02pm*

**Pre Algebra Probability **

You and 5 friends go to a concert. In how many different ways can you sit in the assigned seats? ***=my answer a.720 b.120*** c.30 d.15
*Monday, April 13, 2015 at 6:11pm*

**Pre Algebra Probability **

Each of two urns contains green balls and red balls. urn 1 contains 10 green balls and 14 red balls. urn 2 contains 4 green balls and 11 red balls. if a ball is drawn from each urn what is p(red and red)? BTW- i really don't know what an urn is, i guess a basket or some ...
*Monday, April 13, 2015 at 4:52pm*

**Algebra**

How do I answer this? Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer than twice the length of the first shelf. The third shelf is 12 centimeters shorter than the first shelf. The remaining shelf is 4 centimeters...
*Monday, April 13, 2015 at 4:37pm*

**Algebra 8th grade **

(y2-3y)
*Monday, April 13, 2015 at 4:36pm*

**Algebra 1**

A pyrotechnician plans for two fireworks to explode together at the same height in the air. They travel at speeds shown at the right. Firework B is launched 0.25 s before Firework A. How many seconds after Firework B launches will both fireworks explode? Firework A: 220 ft/s ...
*Monday, April 13, 2015 at 4:23pm*

**algebra**

Jimmy bought a car in January of 2010 worth $25, 500. He submitted the car for valuation in January 2015 and was told that its worth is now $20, 450. Assuming that the depreciation is linear. a) Find the rate at which the car is decreasing in value. Treat the year 2000 as 0 t...
*Monday, April 13, 2015 at 4:05pm*

**Algebra 1**

A square purple rug has a blue square in the center. The side length of the blue square is x inches and the purple region is 8 in. What is the area of the purple part.
*Monday, April 13, 2015 at 3:42pm*

**Algebra 1**

The size of a computer monitor is given by the length of the diagonal of the screen.The ratio of the height to the width of wide screen monitors is 9:16. Find the expressions for the width and height of a wide screen monitor in terms of the lengthy of its diagonal.
*Monday, April 13, 2015 at 3:15pm*

**Algebra 1**

In a right triangle the adjacent side = 12, the opposite side = 35, and the hypotenuse = 37. What does the opposite angle =? a-71,1 deg b-18.9 deg c-29.2 deg d-90 deg my answer is 18.89 degrees
*Monday, April 13, 2015 at 3:11pm*

**Algebra 1**

sqrt 15y * 3 sqrt 81y Simplify the radical expression My answer is 27 sqrt 15y^2
*Monday, April 13, 2015 at 2:30pm*

**algebra**

Bill spent less than $23 on lunch for his co-workers. If burgers cost $5.25 each and sodas cost $2.25 each, which of the following is not a possible combination of burgers and sodas that Bill could have purchased?
*Monday, April 13, 2015 at 1:24pm*

**beginig algebra**

what is -3(k-4)=51
*Monday, April 13, 2015 at 10:05am*

**algebra**

A penny has a 1 cm radius. What is its diameter? Its circumference? its area?
*Monday, April 13, 2015 at 9:53am*

**algebra**

In a natural gas pipeline, the velocity v (in m/s) of the gas as a function of the distance x (in cm) from the wall of the pipe is given by v = 5.2x − x^2 . Determine x for v = 4.8 m/s.
*Monday, April 13, 2015 at 9:52am*

**algebra,mathematics**

Question 1 which of the following is/are true? A.(2/a-b) (b-a/2) =-1. B.If x=-1/2 and y=-2 then -x^2 - 4x/y +y^2=2 3/4. C.√1-x /√x-1 is defined for all x€R,x is not equal to 1. Question 2 The solution set of -x-√2x^2 +x -5 = 1 is 1.Q 2.{-2} 3.{-2,3} 4.{3...
*Monday, April 13, 2015 at 8:13am*

**ALGEBRA PLSSSSSS**

What are all the real zeros of y=(x-12)^3 -10?
*Sunday, April 12, 2015 at 7:23pm*

**algebra plsssSSS**

What are the real or imaginary solution of the polynomials x^4 -52x^2 +576=0
*Sunday, April 12, 2015 at 7:12pm*

**ALGEBRA PLSSSSSS**

What polynomial has a graph that passes through the given points? (-2,2)(-1,-1)(1,5)(3,67)
*Sunday, April 12, 2015 at 7:05pm*

**Algebra 2 A Conic Section**

Franco is adjusting a satellite because he finds it is not focusing the incoming radio waves perfectly. The shape of his satellite can be modeled by y^2+6y-3x+3=0, where x and y are modeled in inches. He realizes that the static is a result of the feed antenna shifting ...
*Sunday, April 12, 2015 at 6:10pm*

**Algebra 1**

Jim shoots an arrow into the air. The height of the arrow in feet, t seconds after shooting, is shown by the function below. h(t)=64t-16t^2 What is the domain of the function and what does it represent?
*Sunday, April 12, 2015 at 3:29pm*

**Algebra 1**

h(t)=-16x^2+16t+32 Which statement best describes the term 32?
*Sunday, April 12, 2015 at 3:25pm*

**Algebra 2 A**

complete the square y^2+6y-3x+3=0
*Sunday, April 12, 2015 at 3:18pm*

**Algebra 2 A**

Franco is adjusting a satellite because he finds it is not focusing the incoming radio waves perfectly. The shape of his satellite can be modeled by mc024-1.jpg, where x and y are modeled in inches. He realizes that the static is a result of the feed antenna shifting slightly ...
*Sunday, April 12, 2015 at 2:56pm*

**Algebra**

For the function g(x) = 2x^2-3x determine the following expression/quantity. a. g(x+h) -g(x-h) / 2h = Using the results of Part A b. g(3.1)-g(2.9) / 0.1 =
*Sunday, April 12, 2015 at 12:40pm*

**ALGEBRA**

Find the solution of the equation. 1/2x^2 - x+5=0
*Sunday, April 12, 2015 at 12:06pm*

**ALGEBRA**

The function h=t^2 +95 models the path of a ball is in the air. assuming the boy lives at sea level where h=0 ft, which is a likely place the boy could have been standing when he threw this ball? a. his backyard b. an underground cave c. a ladder d. a bridge
*Sunday, April 12, 2015 at 11:53am*

**Algebra**

How do I solve for the square root of 15/x^3?
*Sunday, April 12, 2015 at 8:46am*

**Algebra **

A tennis player's swing moves along the path of an arc. If the radius of the arc's circle is 4 feet and the power and the angle of rotation is 100 degrees, what is the length of the arc?
*Saturday, April 11, 2015 at 11:11pm*

**algebra**

The examples in the slideshow, Division by Zero, which is located in the media section of Chapter 1, indicate that there is a different answer when 0 is divided by a number, rather than when a number is divided by 0.
*Saturday, April 11, 2015 at 9:10pm*

**algebra**

Factor: X^4 y-y^5
*Saturday, April 11, 2015 at 3:48pm*

**algebra**

Given: 2d-f/3 = f-3d/5, solve for f
*Saturday, April 11, 2015 at 3:14pm*

**algebra**

Find the ordered pair(s) that satisfies both f(x)=3/2x+1 and g(x)=-1/2x^2+2x+2.
*Saturday, April 11, 2015 at 3:10pm*

**algebra **

Solve: 2a-3/a+1 = 3a-5/a+3
*Saturday, April 11, 2015 at 3:07pm*

**algebra**

Given: 3(x-2y)+3x=y-2(x+4y), find the ratio of y to x
*Saturday, April 11, 2015 at 3:05pm*

**algebra**

Graph the relation. Find the domain and range. {(-1,1/2),(-1/2,-1),(3/2,0),(2,3/2)}
*Saturday, April 11, 2015 at 11:47am*

**algebra**

prove that cosbeta square+cosalfa square+cosgama square=1
*Saturday, April 11, 2015 at 7:46am*

**algebra**

if a over b = 2 over 3 find 3a + 6b over b-a
*Saturday, April 11, 2015 at 4:03am*

**algebra**

what inequality represents the sentence below? The product of a number and 5 is no more than 8.
*Saturday, April 11, 2015 at 12:22am*

**algebra**

Solve the inequality. Graph the solution. 2|x+1/3|<9
*Friday, April 10, 2015 at 11:24pm*

**algebra**

can you solve this? I need to check my work. 2(x-1)^2=50
*Friday, April 10, 2015 at 10:53pm*

**algebra**

find 3 consecutive integers such that the sum of the squares of the first and second is 2 more than the third
*Friday, April 10, 2015 at 10:51pm*

**algebra**

To which set of numbers does the number below belong? -14/11
*Friday, April 10, 2015 at 10:41pm*

**algebra**

Solve the inequality. Graph the solution set. 2r-9>-6
*Friday, April 10, 2015 at 10:35pm*

**algebra**

t/2 + t+3/3t = 1/t I got the lcd of 12t I stuck at the step of solving and i'm not getting t=-4
*Friday, April 10, 2015 at 7:51pm*

**algebra--1 question**

A catapult launches a boulder with an upward velocity of 184 feet per second. The height of the boulder, (h), in feet after t seconds is given by the function h(t) = –16t² + 184t +20. How long does it take the boulder to reach its maximum height? What is the boulder...
*Friday, April 10, 2015 at 2:33pm*

**algebra 1**

how do you find the area or geometric sequence of the explicit formula
*Friday, April 10, 2015 at 2:23pm*

**Algebra**

find the value of p so that p+5, 4p+3, and 8p-2 will from successive terms of an arithmetic sequence, then find the three successive terms.
*Thursday, April 9, 2015 at 10:37pm*

**linear algebra urgent**

Use the Gram-Schmidt process to transform the basis 1 1 1 , 0 1 1 , 2 4 3 for the Euclidean space R3 into an orthonormal basis for R3.
*Thursday, April 9, 2015 at 9:26pm*

**Algebra**

Rationalize the denominator The square root of: (12x^5y^2z^3)/9x^3y^3z
*Thursday, April 9, 2015 at 8:44pm*

**Algebra**

Write the following in simplified form the 4th root of the 3rd root of a^12 b^36 c^14
*Thursday, April 9, 2015 at 8:42pm*

**Algebra probability**

Helena has a set of number cards numbered 1 thru 10. If Helena randomly draws two cards from the deck, what is the probability that she will draw an odd number and then a two? The answer i had was 1/18, but its not on there, so i need help and im confused.
*Thursday, April 9, 2015 at 8:02pm*

**algebra**

How do I state which property of exponents justifies each step of this simplification?: 3^2x^6z^10/2^2y^18*x^4y^4z^4/5z^3*27z^6/2^2x^2y^3 Im really stuck on this problem, I've managed to figure out the first 5 problems but this one is troubling me.
*Thursday, April 9, 2015 at 5:12pm*

**algebra**

In a school of 464 students, 89 are in band, 215 are in sports, of which 31 are involved in both activities. How many students are involved in neither activities?
*Thursday, April 9, 2015 at 12:18pm*

**Algebra**

6. One angle measures 54 more than 3 times another angle. The angles are supplementary. What are their measures? 11. A piece of string is 112 inches long. Isabel wants to cut it into 2 pieces so that one piece is three times as along as the other. How long is each piece?
*Thursday, April 9, 2015 at 9:22am*

**Algebra: Quadratic Functions**

The height of an acrobat who jumps from a trampoline 2 feet in the air is modeled by the function: y = -16x^2 + 16x + 12, where x is the time in the seconds after the acrobat jumps. 1: Find the maximum height of the acrobat. 2: Find how long it takes to reach that height. 3: ...
*Wednesday, April 8, 2015 at 11:06pm*

**Algebra: Quadratic Functions**

if a rocket is launched straight up into the air with an initial velocity of 112 feet per second, it's height after t seconds is given by the formula h = 112t - 16t, where x represents the height of the rocket in feet: A. When will the rocket reach it's maximum height ...
*Wednesday, April 8, 2015 at 10:54pm*

**Algebra 1**

Identify the initial amount a and the decay factor b in each exponential function. 1.) y= 0.1* 0.9^x
*Wednesday, April 8, 2015 at 10:47pm*

**mah**

Let A = {a, b} and list the four elements of the power set P (A). We consider the operations + to be ∪, · to be ∩, and complement to be set complement. Consider 1 to be A and 0 to be ∅. a. Explain why the description above defines a Boolean algebra. b...
*Wednesday, April 8, 2015 at 10:45pm*

**algebra **

You are making a fence for your garden. The length is five less that two times the width. A.write a polynomial that represents the perimeter of the garden. B.write a polynomial that represents the area of the garden. C. Find the perimeter and area of the garden when the width ...
*Wednesday, April 8, 2015 at 10:23pm*

**Algebra**

What is the equation of the line that passes through (-6,-2) and is parallel it the line with the equation x=4
*Wednesday, April 8, 2015 at 4:54pm*

**Algebra**

How many musicians are there in an orchestra if 24 violinists represent 15% of all musicians?
*Wednesday, April 8, 2015 at 4:53pm*