# Algebra

Algebra
the square root of (x-11) = the square root of (x) - 1 The following equation will require that you square both sides twice before all the radicals are eliminated.

Algebra
x^4 + 6x^2 = -8 Solve the equation.

Algebra
The following equation has three solutions. Look for the greatest common factor, then use the quadratic formula to find all solutions. 10t^5 + 5t^4 = 50t^3

Algebra
4x^2 - 3x + 3 = 0 Solve by completing the square

Algebra
2x^2-6x-36=0 Solve by completing the square

College Algebra
A large hotel finds that it can rent 95 rooms when it charge \$100 per room. For each \$1 increase in room cost it rents one room less. (Likewise, for each \$1 decrease in room cost it rents one room more) What price should it charge in order to maximize the revenue? Well, ...

Algebra
Renee is twice as old as Dana. Four years ago Renee was three times as old as Dana. How old are Renee and Dana now? Show Work

Algebra
Jack bought 3 slices of cheese pizza and 4 slices of mushroom pizza for a total cost of \$12.50. Grace bought 3 slices of cheese pizza and 2 slices of mushroom pizza for a total cost of \$8.50. What is the cost of one slice of mushroom pizza?

algebra
Which point satisfies the equation 2x+3y=8? A) (-1,3) B) (2,2) C) (-2,4) D) (1,4)

Algebra
At Central High School, the sophomore class has 60 more students than the freshman class. The junior class has 50 fewer than twice the number of students in the freshman class. The senior class is three times as large as the freshman class. If there are a total of 1,424 ...

Math/ Algebra
Labor Relations Worksheet: Did you hear about the ........ that offers a course for ......... .......? It's called .... ..........(.) #'s (1-27) 1.) (x-4)(x+3)

math- algebra
5 x > 2 x + 18, x € N Please give me the solution to this problem!

algebra
how do you simplify this with a positive exponent: p^8/p^-5

Algebra 222
Please help me solve these using interval notations? C equals {w|w > 1} D equals {w|w greater than less than 5}

Algebra 222
How do I use substitution to solve the system? Please help Addition and equal key is not working . It's asking for x equals and y equals. -5x plus 2y equal 16 y equal 2x plus 7

algebra
1. There are 4 pounds of lawn seed to a bag. Three pounds of lawn seed covers 1800 square feet. How many bags are needed to cover 8400 square feet? Write and solve a proportion. So the only part of the proportion I currently have written is: 1800/ = 8400/x I'm not sure how to ...

algebra
how to convert to standard form by completing the square on x and y. 9x^2+4y^2-72x+16y+124=0

algebra
use each number once to form three proportions. 1,2,10,4,12,20 15,5,16,6,8,3

algebra
√6(5-√6)+2√6 simplify the expression

Algebra
Solve by using the quadratic formula 7x^2-5x=0

Algebra
x^4 - 29x^2 + 100 = 0

Intermediate Algebra
An airplane ascends 150 feet as it flies a horizontal distance of 1000 feet. How much altitude will it again as it flies a horizontal distance of 1 mile. (hint: 5280=1mile.)

Algebra
2(9a-6)^2=11(9a-6)+63

Algebra
Lester makes sweetened iced tea. He uses 1/2 cup of sweetener to make 2 quarts of tea. He wants to make 16 quarts of tea for a family gathering. Which proportion should lester use to find s, the amount of sweetener to add to 16 quarts of tea?

linear algebra
(-5.1) the the zero power 3g-2b2

algebra 2
Subtract the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending powers of x. (-6.7x2power + 2.3x y + 5.2) - (-14.9x 2 - 3.5x y + 7.1) my answer 8.2x2power+5.8xy-1.9

Algebra
It’s the end of the semester, and sisters Sarah and Chelsea are eager to head home for the summer. It’s a long drive, and Sarah’s old car can manage an average speed of only 55 miles per hour, so she leaves early in the morning. An hour later, Chelsea follows her at an ...

Algebra
An airplane flies 165 miles from point A in the direction 130 degrees and then travels in the direction 245 degrees for 80 miles. Approximately how far is the airplane from A?

Algebra
nikki ate 1/4 of a pizza. What is the fraction that describes how much of the pizza Nikki could have eaten. 3/10 2/8 2/6 4/12

Algebra 2
How do I find the exact value of 7 pi?

Andrew decides to wait until age 65 to begin receiving social security benefits. Find the present value of his estimated \$26,000 per year in payment assuming 6%per year and payment until his 90th birthday. A. \$265,263.20 B. \$322,3667.36 C. \$338,082.42 D. \$281,059.48 (Please ...

Algebra
The graph of the linear equation y=mx+b has an x-intercept of 6. What is the x-intercept of the graph of the linear equation y=3mx+b?

algebra
A boat can travel 59 mph in still water. If it travels 325 miles with the current in the same length of time it travels 265 miles against the current, what is the speed of the current?

algebra
If f(x) and g(x) are two functions defined by f(x) = ã(x + 1), g(x) = | x - 1 |, then what is the value of f(g(9))?

College algebra
. If i = ¡Ì-1, then (i + 1)(6i ¨C 10) is equivalent to?

College Algebra
The function w(x) = -0.01x² + 0.27x + 8.60 can be used to estimate the number of self-employed workers in America in millions, x years after 1980. For what years were there (or will be there) 9.7 million self-employed worker in America?

Algebra
Carly deposits \$900 into an annuity at the end of every month for 2.5 years. The fund holds international stocks, and it yields about 12% compounded monthly. Find the interest earned after 2.5 years. a.\$31,619.46 b.\$31,306.40 c.\$4,619.47 d.\$4,306.40 (I can not figure this out...

Algebra
Perform the indicated operation and if possible simplify x/5 * y/z

Algebra
(5(x+5)^2)+(2(x+5)^2)-7=0

Algebra Help
(x^4)-(4x^2)-45=0

algebra 2
Three hundred and fifty-eight tickets to the school basketball game were sold. Student tickets were \$1.50 and non-student tickets were 3.25. The school made \$752.25. How many student tickets were sold?

Algebra
x^4-4x^2-45=0

Algebra
Solve the following equation. 16x-8square roots of x = 35

Algebra 2
A chemist has a bottle of 1% acid solution and a bottle of 5% acid solution. She wants to mix the two to get 100 mL of a 4% acid solution. How much of each should she use?

linear algebra urgent
For the orthogonal matrix A = 1/sqrt(2) -1/sqrt(2) -1/(sqrt(2)) -1/sqrt(2) verify that (Ax,Ay)=(x,y) for any vectors x and y in R2. Can someone please explain this

Algebra
A profit, P(X), for a certain item is a function relating the income from sales,S(X), and the cost of the item,C(X), The function is stated by the equation shown, where x is the number of items sold. P(X) = S(X) - C(X) When S(X) = 0.5x and C(X) = 10 + 0.1x, the range of P(X) ...

Algebra
The equations for two functions are shown below. f(x) = x + 3 and g(x) = 2x - 5 Which intercept is farthest from the origin compared to the other three intercepts? A) x-intercept of f(x) B) y-intercept of f(x) C) x-intercept of g(x) D) y-intercept of g(x)

algebra
Please help me solve the following problem: y: 3y + 9y - 24 = 6y - 4 - 8

math
Need help with an algebra question please im trying to.help my son with homework but its been a long time..please!!!

Algebra IMPORTANT
2k+ 5k+1 + 10k+2 are three successive terms of a geometric sequence find the value(s) of k

Algebra-VERY IMPORTANT
Given the polynomial x^2+10x+k Find all the values of k so that this given polynomial is factorable

Algebra
What the minimum of y=2x^2-7x-2? How do you find it?

linear algebra
Find the inverse of each of the following orthogonal matrices. A= [1 0 0 0 cos(theta) sin(theta) 0 -sin(theta) cos(theta)]

Algebra
kyle drops a ball from a height of 15 feet above the ground. The function h = -16 f2 +15 gives the height h of the ball (in feet) after t seconds. Graph the function to determine at about what time the ball hits the ground

Algebra
Using two variables - A carpenter wants to cut a 24-foot board into two pieces so that one piece is 5 times as long as the other. How long should each piece be?

Algebra
Jill, Meg, and Beth are sisters. Jill is 2 years younger than Meg. Beth is half as old as Meg. Use the same variable to write three algebraic expressions based on this situation. Tell what the variable represents and what each expression represents.

Algebra
Mr. Delgado has some young orange trees. He wants to plant them in 46 rows. If t is the total number if orange trees, write an algebraic expression to represent how many trees he can plant in each row.

Algebra
The student council is asking people to donate money for the new park outside the school. Everyone who makes the suggested donation amount will be given a bracelet. If everyone donates the suggested amount, and b bracelets are given away, what algebraic expression represents ...

Algebra
Noelle bought some boxes of water bottles for a picnic. Each box contained 24 bottles of water. If c is he number of boxes, write an expression to show home many bottles of water Noelle bought.

algebra
A doormat has an area of 912 square inches. Its perimeter is 124 inches. What are the dimensions of the doormat?

Math algebra
x^1/3 ÷ (4x)^½ · 16x^-5/4 ÷ 32x I get: x^-5/12 ÷ x = x^(-5/12-12/12) = x^-17/12 but answer given is x^7/12 I'm using a^n / a^m = a^n-m but according to the answer I'm given it seems that I'm supposed to add the 12/12 to -5/12 not subtract them

Algebra 1
Which answer choice shows 2x-y=z correctly solved for y? A: y=2x+z B: y=2x-z C:y=-2x+z D: y=-2x-z Here's how I did it: 2x-y=z -y=2x+z y=-2x-z Am I right? I have a feeling I'm not, so I would like some confirmation one way or the other.

college algebra
a chemist needs to prepare 28 ounces of a 8% hydrochloric acid solution. find the amount of 14% solution and the amount of 7% solution he should mix to get this solution.

algebra (urgent help needed)
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?

Math/Algebra
Jeremy opened two saving accounts at the beginning of 2010, each with an initial deposit of \$4,000. Account A earned simple interest, and account B earned interest that was compounded annually. By the end of 2012, which account earned more interest, and how much more interest ...

Math/Algebra
Jeremy opened two saving accounts at the beginning of 2010, each with an initial deposit of \$4,000. Account A earned simple interest, and account B earned interest that was compounded annually. By the end of 2012, which account earned more interest, and how much more interest ...

algebra
Suppose a car that sells for \$40,000 depreciates 10% per year. How many years would it take for the car to have a value less than \$25,000

ALGEBRA II
Write each series in summation notation: *this is the only one that i cant solve -2+4+(-6)+8+(-10)+12 Please help! :(

algebra
Describe how you know if an inequality is an “and” or an “or” problem. (use -3 < x+5 < 8). Also, how do you know if an absolute value question is an “and” or an “or” problem?

algebra
solve for x, y and z when 2x + 4y + 2z = 144 4x + y + 0.5z = 120 x + 3y + 4z = 144

math (algebra)
An entrepreneur has the following costs and revenue functions: TC = 30 + 3Q and TR = 4Q. Calculate the equilibrium quantity algebraically and graphically at the break-even point.

Algebra
Use the properties of exponents to simplify as much as possible (8a^3b^6)^(1/3)/(16a^8b^-4)^(1/4)

Algebra
Find an equation that has the given solutions. (Assume the equation has a degree of 3.) x = −5, x = 5, x = 2/3

Algebra
Solve the following quadratic equation by completing the square. (Enter your answers as a comma-separated list.) a^2-12a+52=0

Algebra
Find an equation that has the given solutions. (Assume the equation has a degree of 2.) a=-1/3, a=3/7

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)

Algebra
Solve each equation using the quadratic formula. (Enter your answers as a comma-separated list.) x^2 -2x +10=0

Algebra

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

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?

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

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

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. ...

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...

Math
6X+5Y=7X+3Y=2(X+6Y-1) solve by algebra method

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 ...

Intermidiate Algebra

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?

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 ...

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?

Algebra 1
How many seconds would it take an egg to hit the ground if it's at a 363 height range?

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?

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.) ...

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.

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 ...

ALGEBRA PLSSSSSS
For the function f(x)=x^2-12, find (f o f^-1)(4)

ALGEBRA PLSSSSSS
For the function f(x)=x+9, find (f o f^-1)(5)

ALGEBRA PLSSSSSS
For the function f(x)=(8-2x)^2, find f^-1. Determine weather f^-1 is a function.

ALGEBRA PLSSSSSS
What is the inverse of the given function? y=7x^2-3

ALGEBRA PLSSSSSS
Let f(x)=x+2 and g(x)=x^2. Find (g o f)(-5)