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September 21, 2014

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

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Algebra
The question says given the function f(x)find the following: a graph is then shown with a) f(-1) b) f(3) c) find x when f(x) = -2 I have no idea where to start. I can't show you the graph here but there is a line with a starting point and ending point
Saturday, September 20, 2014 at 10:04pm

Algebra 2
The graph of a function passes through the points (9,-6) and (12, -3). What are the coordinates of these points after the function has been compressed by a factor of 1/3?
Saturday, September 20, 2014 at 8:30pm

Algebra 2
1. Simplify ((-2x^4y^7)/(x^5))^3. Assume all variables are nonzero. A: (-8y^21)/(x^3) 2. Simplify 3x(5y + 4) - 2xy - 10x + 6x^2 A: 13xy + 2x + 6x^2 or 6x^2 + 13xy + 2x 3. Evaluate (2.0 x 10^-7)/(8.0 x 10^-9). Write the answer in scientific notation. A: 0.25 x 10^2 4. Evlauate ...
Saturday, September 20, 2014 at 5:12pm

Algebra
Find the inverse of..... f(x)=(4x-1)/(2x+3) Is the inverse this: f^-1(x)= (1/2)((-3x-1)/(x-2))
Saturday, September 20, 2014 at 1:27pm

Algebra
-1v + 5 + 6v = 1 + 5v + 3
Saturday, September 20, 2014 at 11:19am

Algebra 2--Please, help me!
1. Simplify ((-2x^4y^7)/(x^5))^3. Assume all variables are nonzero. A: (-8y^21)/(x^3) 2. Simplify 3x(5y + 4) - 2xy - 10x + 6x^2 A: 13xy + 2x + 6x^2 or 6x^2 + 13xy + 2x 3. Evaluate (2.0 x 10^-7)/(8.0 x 10^-9). Write the answer in scientific notation. A: 0.25 x 10^2 4. Evlauate ...
Saturday, September 20, 2014 at 9:49am

Algebra 2
1. Simplify ((-2x^4y^7)/(x^5))^3. Assume all variables are nonzero. A: (-8y^21)/(x^3) 2. Simplify 3x(5y + 4) - 2xy - 10x + 6x^2 A: 13xy + 2x + 6x^2 or 6x^2 + 13xy + 2x 3. Evaluate (2.0 x 10^-7)/(8.0 x 10^-9). Write the answer in scientific notation. A: 0.25 x 10^2 4. Evlauate ...
Friday, September 19, 2014 at 10:54pm

algebra
Discount Electronics ordered three dozen cell phones from the manufacturer. If the total order amounted to $1,980, what was the cost of each phone?
Friday, September 19, 2014 at 10:18pm

algebra 2
The factors of a polynomial are (x + 3)(x - 2)(x + 7). How do the zeros relate to the factors? Can someone explain this to me because I am so lost?
Friday, September 19, 2014 at 10:08pm

Algebra
6-(-5r)=5r-3
Friday, September 19, 2014 at 8:46pm

pre algebra
1. what is the sum of 5/6 + 2/3? a.1 1/3 b.1 1/2 c.1 2/3* d.1 3/4 2. sylvia has 6 1/2 boxes of chocolate to share at a family picnic. if she gives each person 1/3 of a box, how many people can receive chocolate? a.13* b.17 c.19 d.21 my answer=* please explain how you got your ...
Friday, September 19, 2014 at 8:05pm

Algebra 2
1. Determine whether the relation is a function. A: ? 2. A commuter has $75. Each day's commute costs $3.50. Write a function to represent the total amount the commuter has remaining after d days. What is the value of the function for an input of 5, and what does it ...
Friday, September 19, 2014 at 6:40pm

Algebra 2
1. Simplify ((-2x^4y^7)/(x^5))^3. Assume all variables are nonzero. A: (-8y^21)/(x^3) 2. Simplify 3x(5y + 4) - 2xy - 10x + 6x^2 A: 13xy + 2x + 6x^2 or 6x^2 + 13xy + 2x 3. Evaluate (2.0 x 10^-7)/(8.0 x 10^-9). Write the answer in scientific notation. A: 0.25 x 10^2 4. Evlauate ...
Friday, September 19, 2014 at 6:37pm

algebra - check my answer?
A square field has an area of 479² ft What is the approximate length of a side of the field? Give your answer to the nearest foot. Explain A = 479 sq ft 479 = x^2 square root of 479 = square root of x^2 21.89... = x Rounded = 22 ft Is my answer okay? Please check
Friday, September 19, 2014 at 4:19pm

Algebra( check my answers)
1. Juan deposited $200 in a savings account earning 3% interest over 2 years. What was the total amount of interest earned after 2 years? $12 $24 $120 ( my answer) $240 2. Mary borrowed $11,000 at 5% interest for 4 years. What was the total interest? $22 $220 $2200 (my answer...
Friday, September 19, 2014 at 2:32pm

Algebra 2 Answer Check
Simplify. 1. 5√6 - √24 A: 3√6 2. Evaluate 3y + 5xy - x for x = 4 and y = 2 A: 42 3. Simplify 3x(5y + 4) - 2xy - 10x + 6x^2 A: 3xy + 2x + 6x^2 4. Evaluate 5^-3 A: 1/125 5. Simplify ((-2x^4y^7)/(x^5))^3. Assume all variables are nonzero. A: (2x^3)/(y^21)
Friday, September 19, 2014 at 1:53pm

Algebra 2
determine all symmetries of the function g(x)=x/x-1
Friday, September 19, 2014 at 12:51pm

Algebra
Given a point (-2,5), determine a point that satisfies the specified symmetry. 1.)Origin 2.)y-axis 3.)x-axis 4.)y=x
Friday, September 19, 2014 at 12:49pm

Algebra
16x^4 + 65x^2 + 4 = 0
Friday, September 19, 2014 at 9:05am

Algebra
x^3 + 6x^2 + 10x = 0
Friday, September 19, 2014 at 9:05am

math algebra word problems
Two crews working toward each other are 9.45 miles apart. one crew paves 1.5 miles per day, and the other paves 1.2 mi per day. How long will it take them to meet?
Friday, September 19, 2014 at 12:39am

algebra
When reading some schematics of a rectangular garden you see the binomial x +8 feet represents the length and the binomial x - 1 represents the width. Write an expression that represents the total area of the garden in the form x2 (squared) + bx + c by using the distributive ...
Thursday, September 18, 2014 at 10:15pm

Algebra 2
1. Simplify (5√7)/(√6) A: (5√42)/(6) or 5√7/6?
Thursday, September 18, 2014 at 9:42pm

Algebra 2
x/4-4/x over 1-4/x simplify this
Thursday, September 18, 2014 at 9:19pm

Algebra 2
1. Simplify (5√7)/(√6) A: (5√42)/(6) or 5√7/6?
Thursday, September 18, 2014 at 9:04pm

Algebra 2
Given a point (-2,5), determine a point that satisfies the specified symmetry. 1.)Origin 2.)y-axis 3.)x-axis 4.)y=x
Thursday, September 18, 2014 at 6:54pm

Algebra
2m+3/m=1
Thursday, September 18, 2014 at 6:48pm

Algebra
2.25(x-4.2)=x+3.28
Thursday, September 18, 2014 at 6:23pm

algebra
how to write recursive formula and give one example of one
Thursday, September 18, 2014 at 5:54pm

algebra 2
In a flower garden, 1/4 of the bulbs are daffodils, 3/8 are tulips and the remaining 21 bulbs are pillows. How many bulbs are there in all?
Thursday, September 18, 2014 at 5:13pm

algebra
The formula F=9/5C+32 changes a temperature reading from the Celcius scale C to the Fahrenheit scale F. What is the temperature measured in degrees Fahrenheit when the Celsius temperature is -5°?
Thursday, September 18, 2014 at 3:36pm

Algebra 1
The monthly cost C for a cell phone is $20 each month plus $.10 for each minutes used. Which equation can be used to find the total cost (in dollars) for a month when m minutes are used? A. C= m+20 B. C= 0.1m+20 C. C= 10m+20 D. C=20m
Thursday, September 18, 2014 at 3:15pm

Algebra 1
What is an expression for the sale price of a shirt that is sold at 40% off the original price p? A. t=80-m B. t=m-80 C. t=80+m D. t=80m
Thursday, September 18, 2014 at 3:11pm

Algebra
Let g(x) be the indicated combined transformation of f(x) = x. Write the rule for g(x). Horizontal stretch by a factor of 5 followed by a horizontal shift 2 units.
Thursday, September 18, 2014 at 10:58am

algebra
A can of soda at 79°F is placed in a refrigerator that maintains a constant temperature of 36°F. The temperature T of the soda t minutes after it is placed in the refrigerator is given by T(t) = 36 + 43e−0.058t. (a) Find the temperature, to the nearest degree, of...
Thursday, September 18, 2014 at 5:49am

Math algebra
what do you call an alligator that sneaks up and bites you from behind
Thursday, September 18, 2014 at 4:05am

algebra
factorise 3px-3py-x+y
Thursday, September 18, 2014 at 2:40am

Algebra
Stella is recording temperatures every day for 5 days. On the first day, Stella recorded a temperature of 0 degrees Farenheit. A. On the second day, the temperature was 3 degrees Fahrenheit above the temperature on the first day. What was the temperature on the second day? B. ...
Thursday, September 18, 2014 at 12:14am

Algebra
Marco is making mosaic garden stones using red, yellow, and blue tiles. He has 45 red tiles, 90 blue tiles, and 75 yellow tiles. Each stone must have the same number of each color tile. What is the greatest number of stones Marco can make? A. How many of each color tile will ...
Wednesday, September 17, 2014 at 10:41pm

Algebra! please help
x^2+y^2+x-6y+9=0 Graph the circle using the center (h,k) and radius r. find the intercepts
Wednesday, September 17, 2014 at 10:31pm

Algebra
The average temperature during the growing season is directly related to the width of the ring, with a greater width corresponding to a higher average temperature. Chart goes as follows 1900 is 14/25 width, 1910 has a 29/50 width, 1920 has a 53/100 width, 1930 has a 13/20 ...
Wednesday, September 17, 2014 at 9:52pm

Linear Algebra
Let vector 'v' = (1,1) and vector 'w' = (1,-1). a)Find real numbers t1 and t2 such that t1(v) + t2(w) = (13,-12). b)Find real numbers t1 and t2 such that t1(v) + t2(w) = (x1,x2)for any x1,x2 that is an element of R.
Wednesday, September 17, 2014 at 9:49pm

Algebra 1
find the product (2x+1)(2x-1)
Wednesday, September 17, 2014 at 9:47pm

Algebra 1
A parking garage has floors above and below ground level. For a scavenger hunt, galas friends are given a list of objects they need to find on the third floor and fourth level below ground, the first and fourth above ground, and ground level. Question A . If ground level is 0 ...
Wednesday, September 17, 2014 at 9:40pm

Algebra
a-2=a/3
Wednesday, September 17, 2014 at 9:39pm

Algebra
b-1/2=b
Wednesday, September 17, 2014 at 9:39pm

Algebra
Write an equation to make these two production expressions equal 125+).15x 75+0.40x
Wednesday, September 17, 2014 at 9:21pm

algebra
x^3-9x+1=0
Wednesday, September 17, 2014 at 8:56pm

Math:Algebra 2
Find an equation of the linear function f having a slope of -2 if f(1)=3 My teacher never taught this, please help
Wednesday, September 17, 2014 at 8:34pm

algebra 2
Find an equation of the linear function f having a slope of -2 if f(1)=3 My teacher never taught us this, please help me
Wednesday, September 17, 2014 at 8:30pm

Algebra 2
From 1990 to 1994, the mail order sales of health products in the United States can be modeled by S = 10t^3 + 115t^2 + 25t + 2505 where S is the sales (in millions of dollars) and t is the number of years since 1990. In what year where about $3885 million of health products sold?
Wednesday, September 17, 2014 at 7:57pm

algebra
325 meters in 28 seconds? can you show me how to do this.
Wednesday, September 17, 2014 at 4:24pm

Algebra
Choose them compound inequality that represents all real numbers that are less then -3 or greater than or equal to 5.
Wednesday, September 17, 2014 at 4:17pm

algebra
the water ina beaker has of18g electeicity is passed thought the water for two hours afterward the water has a mass of only 16g what happen to the missing mass?
Wednesday, September 17, 2014 at 2:37pm

algebra
Two acid solutions are available to a chemist. One is 10% nitric acid solution, the other is 4% nitric acid solution. How much of each type of solution should be mixed together to form a 600 ml of a 6% nitric acid solution?
Wednesday, September 17, 2014 at 1:28pm

Algebra help
Find an equation of the line L, where L is perpendicular to y=3x and passes through the point (1,3) Please help I'm not sure what formula to use or how to work out this problem
Wednesday, September 17, 2014 at 12:28pm

Algebra
U = 1,2,3,4,5,6,7,8,9 A = 1,3,5,7 B = 4,5,6 a ⊂ b True or false and B ⊂ U True or false My answers are false for the first one and true for the second one
Wednesday, September 17, 2014 at 12:54am

Algebra
Use a graphing utility to approximate the real solutions if any, of the given equation rounded to two decimal places. x^3-9x+1=0
Wednesday, September 17, 2014 at 12:30am

Algebra 2
The line 4x + ky = -1 has a slope of 2/3. Find k. a. 3/2 b. 6 c. -3 d. -6
Wednesday, September 17, 2014 at 12:05am

Algebra help
7x^2=8x Solve using the quadratic formula
Tuesday, September 16, 2014 at 11:33pm

Algebra
Write the solution to the inequality in set builder notation. 9t - 4 > 32 My answer is (t I t > 4)
Tuesday, September 16, 2014 at 10:21pm

Algebra
U = 1,2,3,4,5,6,7,8,9,10 Q=3,6,9 What is Q prime? My answer is 1,2,4,5,7,8,10
Tuesday, September 16, 2014 at 10:16pm

algebra
an astronaut who weighs 85 kilograms on the earth weighs 14.2 kilograms on the moon. how much would a person weigh on the moon if they weigh 95 kilograms on earth? round your answer to the nearest tenth.
Tuesday, September 16, 2014 at 10:12pm

Algebra
Sis the set of prime numbers that are less than 15. My answer is 2,3,5,7,11, and 13
Tuesday, September 16, 2014 at 9:47pm

Algebra
-2x^4+9=3x+5 Round two decimals
Tuesday, September 16, 2014 at 9:42pm

algebra
The odometer on your family car reads 20186.7 after going 62.3 miles.how many miles were on the odometer before going 62.3 miles?write an expression
Tuesday, September 16, 2014 at 9:38pm

college algebra
A jazz group on tour has been drawing average crowds of 600 people. It is projected that for every $1 increase in the $15 ticket price, the average attendance will decrease by 60. At what ticket price will nightly receipts be $7,560?
Tuesday, September 16, 2014 at 8:33pm

Algebra 1--Please, Check My Answers!
1. How did Mesoptamin and Egyptain city states develop concepts of law codes and divine kingship? 2. What was Charlemagne's influence on European civilization? Answers: 1. Hammurabi developed the concepts of law codes in Mesopotamia, while the pharaoh was the head of the ...
Tuesday, September 16, 2014 at 6:58pm

algebra
trinomal and binomial help please (s^2+4) (s-1)=
Tuesday, September 16, 2014 at 6:40pm

college algebra
The Vilas County News earns a profit of $20 per year for each of its 3,000 subscribers. Management projects that the profit per subscriber would increase by 1¢ for each additional subscriber over the current 3,000. How many subscribers are needed to bring a total profit ...
Tuesday, September 16, 2014 at 5:56pm

college algebra
An advertising company orders a poster that is 342 square feet. If its length is 1 foot greater than its width, find the dimensions of the poster.
Tuesday, September 16, 2014 at 5:05pm

college algebra
A contractor leans a 23-foot ladder against a building. The distance from the ground to the top of the ladder is 7 feet more than the distance from the building to the base of the ladder. How far up the building is the ladder to the nearest tenth of a foot?
Tuesday, September 16, 2014 at 5:05pm

algebra II
need set notation for two step inequalities. problem is -4-5v<-29....i think answer is v>5. if thats true, then how do u do set notation for answer? have 80 set notations to do and need to know how to do this by example
Tuesday, September 16, 2014 at 4:57pm

Algebra
Express g(f(x)) and f(g(x)), if they exist, as sets of ordered pairs. f= {(3,8),(2,5),(4,-5),(9,3)} g= {(9,2),(-5,3),(5,9),(8,10),(1,9)}
Tuesday, September 16, 2014 at 4:50pm

Algebra 2
what is an equation for the vertical translation of y=2x-1: 3/5 units up f) y=2x-2/5 g) y=2x-1/5 h) y=2x-8/5 I) y=2x+1/5
Tuesday, September 16, 2014 at 4:37pm

Algebra 2
what is an equation for each vertical translation of y=2x-1: 3/5 units up f) y=2x-2/5 g) y=2x-1/5 h) y=2x-8/5 I) y=2x+1/5
Tuesday, September 16, 2014 at 4:32pm

Algebra 1
So I attempted this and I'm not sure if it's the correct answer - and I don't know how to graph it.. Student tickets to the Homecoming game cost $5 each. General admission tickets cost $8 each. So far, 150 tickets have been sold. $900 has been collected. A. Write a...
Tuesday, September 16, 2014 at 4:10pm

college algebra
The Vilas County News earns a profit of $20 per year for each of its 3,000 subscribers. Management projects that the profit per subscriber would increase by 1¢ for each additional subscriber over the current 3,000. How many subscribers are needed to bring a total profit ...
Tuesday, September 16, 2014 at 3:11pm

Coordinate Algebra
A seedling grows at a rate of 1.5 cm each week. Before the seedling was planted in the ground, it measured 7 cm. Write an equation that model’s the flower’s height h after x weeks. What does the y-intercept represent?
Tuesday, September 16, 2014 at 2:04pm

Coordinate Algebra
Suppose y varies directly with x. If y = 6 when x = −2, find x when y is 9.
Tuesday, September 16, 2014 at 2:03pm

Coordinate Algebra
Write an equation in point-slope form for the line through the given point with the given slope. (5,4):m=-3
Tuesday, September 16, 2014 at 1:29pm

algebra
graph shows the equation c = 10+ 3t, where c is the total cost of going to the carnival and t is the number of $3 tickets purchased?
Tuesday, September 16, 2014 at 8:25am

math, algebra
If a and b are integers when is 1/ab positive? Please help me, I don't know what to do.
Monday, September 15, 2014 at 9:36pm

math, algebra
If a and b are integers, when is -1/a positive?
Monday, September 15, 2014 at 9:32pm

Algebra
Determine the value or values of d that complete the square for the expression. (a) x^2 + dx +64 (b) x^2 + dx +49/4
Monday, September 15, 2014 at 8:55pm

Algebra
A manufacturer of tin cans wishes to construct a right circular cylindrical can of height 20 centimeters and capacity 2600 cm^3 (see the figure). Find the inner radius r of the can. (Round your answer to one decimal place.) r = cm
Monday, September 15, 2014 at 8:16pm

Algebra
Use the quadratic formula to solve the equation for x in terms of y and y in terms of x. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 2x^2 + 7xy + 1 − y^2 = 0 y in terms of x y =
Monday, September 15, 2014 at 8:14pm

Pre-Algebra
A recipe asks for 1 1/2 cups of chocolate chips for 60 cookies. How many cups would be needed for 36 cookies?
Monday, September 15, 2014 at 5:24pm

algebra
17 = -13 - 8x
Monday, September 15, 2014 at 5:23pm

Algebra
What is the solution to the proportion? 4/12=10/x x = 3 x = 3.3 x = 4.8 x = 30
Monday, September 15, 2014 at 1:51pm

algebra
An investment of $4600 is made at an annual simple interest rate of 6.8%. How much additional money must be invested at an annual simple interest rate of 9% so that the total interest earned is 8% of the total investment?
Monday, September 15, 2014 at 1:36pm

algebra
A radiator contains 6 liters of a 25% antifreeze solution. How much should be drained and replaced with pure antifreeze to produce a 33% antifreeze solution?
Monday, September 15, 2014 at 1:34pm

algebra
A plane leaves Chicago headed for LA at 540 mph. One hour later, a second plane leaves LA headed for Chicago at 660 mph. If the air route from Chicago to LA is 1800 miles, how long will it take for the first plane to pass the second plane? How far from Chicago will they be at ...
Monday, September 15, 2014 at 1:33pm

algebra
A triangle has a perimeter of 161 miles. The length of each of the two shorter sides of the triangle is two thirds the length of the longest side. Find the length of each side of the triangle.
Monday, September 15, 2014 at 12:56pm

algebra
Three people decide to share the cost of a yacht. By bringing in an additional partner, they can reduce the cost to each person by $4000. What is the total cost of the yacht?
Monday, September 15, 2014 at 12:54pm

college algebra
An executive invests $29,000, some at 8% and some at 4% annual interest. If he receives an annual return of $1,680, how much is invested at each rate?
Monday, September 15, 2014 at 12:19pm

Algebra 2
Reed has $6.20 in nickels and quarters. If the nickels were quarters and the quarters were nickels, he would have $3.50 more. How many quarters does Reed have?
Monday, September 15, 2014 at 11:44am

algebra
1. 5/13t = -9 2. 6 = x + 2/3 3. 13 + w/y = -18 4. 17 = -13 - 8x
Monday, September 15, 2014 at 11:36am

Algebra
Okay, so! I figured out how to get the Point-slope form to the question I was given which led me to y+3 =-2(x+1), but, now I'm stick on finding the Slope Intercept form to get my answer. Can someone help me? Thanks!
Monday, September 15, 2014 at 7:42am

Algebra 1
How do you solve this? Thanks! y+3 = -2(x+1)
Sunday, September 14, 2014 at 11:15pm

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