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December 2, 2016

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

algebra
How do I graph x<2y and x+y<0
Thursday, September 25, 2014 by Janet

Algebra 2
Am I correct? The radius of a cylinder is 3x – 2 cm. The height of the cylinder is x + 3 cm. What is the surface area of the cylinder? Use the formula A = 2pi r2 + 2 pi rh. 2spi (3x2 + 10x – 8) 2 pi (12x2 + 7x-2) 2 pi (12x2 -2x +13) my answer 2 pi (12x2 -5x -2)
Thursday, September 25, 2014 by Sandra

Algebra (Quadratics)
The height y (in feet) of a baseball thrown by a child is y = -1/10 x^2 + 3x + 6 where x is the horizontal distance (in feet) from where the ball was thrown. Will the ball fly over the head of another child 30 feet away trying to catch the ball? (Assume that the child who is ...
Thursday, September 25, 2014 by Ruth

ALGEBRA 2
'OR" COMPOUND INEQALITY 1-X>_-3 OR 5X - 1 > 19
Thursday, September 25, 2014 by Argenia

ALGEBRA 2
-1<_3 + 2X <11
Thursday, September 25, 2014 by Argenia

Algebra, Please Help!
How do i find the radius of a circle with the center (16/11,79/11)? Thanks
Wednesday, September 24, 2014 by Bella

Algebra
1.How do I find the center of a circle using the points (2,8) (-4,6) (1,-1) ? 2. The Radius of the circle? 3. Equation of circle THANKS!
Wednesday, September 24, 2014 by Please Help!

algebra
midpoint (-5,-15) endpoint (-13,-8). find the other endpoint
Wednesday, September 24, 2014 by Ernie

Algebra Help
How do I find the center of a circle using the points (2,8) (-4,6) (1,-1) I also found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And the Equation of the perpendicular bisector of the line between the second...
Wednesday, September 24, 2014 by Bri

Algebra II Honors
There are some interesting special cases in which the graphs turn out to be parallel, perpendicular, or coincident with the coordinate planes or axes. Sketch a graph of each of the following equations by drawing their traces as in Problem 1. Then tell what the graph is ...
Wednesday, September 24, 2014 by Crystal

Algebra 2
Without graphing, identify the verx, axis of symmetry, and transformations from the parent function f(x)= absolute value of x y= 4- absolute value of x-2
Wednesday, September 24, 2014 by Nick

Linear Algebra
Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)
Wednesday, September 24, 2014 by Aegon

Algebra
Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)
Wednesday, September 24, 2014 by Paul

algebra
I invest a sum of money at 10% annual simple rate and twice that amount at 12% annual simple interest.My total yearly in come from both investment was $2890,how much was invested at each rate? Also What is the speed of each train if one train travels 8 mph faster than the ...
Wednesday, September 24, 2014 by john

Algebra 2
There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the part of the yard that is not covered by the circle? Possible answers: 4x(5) other person's answer 8x2(5 – pi ) 16x(25...
Wednesday, September 24, 2014 by Sandra

Algebra
I am having a hard time getting the right answer for this problem. Two people disagree. Please help... There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the part of the yard that ...
Wednesday, September 24, 2014 by Sandra

algebra 2
How do I graph 3x+y<5.if u can help it'd be appreciated
Wednesday, September 24, 2014 by Janet

algebra
Jesse and Larry entered a pie eating contest. Jesse ate 5 less than twice as many pies as Larry. They ate a total of 16 pies. How many pies did each eat.
Wednesday, September 24, 2014 by kayla

Algebra Based - Physics Help Please!!!!
a) In 1897, Madeline Boardman won the long-drive contest during the U.S. Women's Amateur Golf Tournament. Her winning drive was 125 m. if the ball was hit off the tee at a 45 degree angle, what did the magnitude of its initial velocity have to be for her to make the ...
Wednesday, September 24, 2014 by Tim

Algebra
Determine all values of k for which each pair of vectors is orthogonal. a) (1,2) and (k,k) b) (1,2,1) and (k,2k,4)
Wednesday, September 24, 2014 by ZZZ Top

Algebra
please explain and show step to this factoring problem 9w - w3 and 3h2 the 2 power + 1+3a this really makes no sense to me HELP
Wednesday, September 24, 2014 by joann

algebra 2
Solve the following systems of equations. If the system cannot be solved ,state that it cannot be solved and explain why. 1.3x+y=7 3x+y=10 2. 5x-2y=-24 -4y=-48-10x
Wednesday, September 24, 2014 by Hannah

Algebra
There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the part of the yard that is not covered by the circle? I keep coming up with 4x(5)but I don't think that is right. How do I ...
Wednesday, September 24, 2014 by Sandra

Algebra
Wanda took out a personal loan for $16,000 at 9% simple interest. How much interest will she pay after 5 years? Suppose she pays off the loan in 3 years instead of 5 years. How much money will she save in interest?
Wednesday, September 24, 2014 by Sara

algebra. help!
Is 4x-3=19 true, false, or open? Which of the following is a solution to the equation 16=4x-4? a. -5 b. -4 c. 5 d. 16
Wednesday, September 24, 2014 by Hannah

algebra. help!
is -7+9=-9+7 true false or open
Wednesday, September 24, 2014 by Hannah

Algebra
x= 3 + sqrt(3x-5)
Wednesday, September 24, 2014 by Ashton

algebra
A telemarketer claims that every call made to a customer costs at least $2, if a call costs $.50 plus $.10 for each minute, how long does each call last
Wednesday, September 24, 2014 by Anonymous

Algebra
The power P (in watts) generated by a windmill that has efficiency E is given by the formula P = 0.31ED^2V^3, where D is the diameter (in feet) of the windmill blades and V is the wind velocity (in ft/sec). Approximate the wind velocity necessary to generate 30,000 watts if E...
Wednesday, September 24, 2014 by Ashton

Algebra
A class of 23 students was using square tiles to build rectangular shapes. Each student had more than 1 tile and each had a different number of tiles. Each student was able to build only one shape of rectangle. All tiles had to be used to build a rectangle and the rectangle ...
Wednesday, September 24, 2014 by KG

Algebra
A coin collection contains 30 coins in nickels, dimes, and quarters. There are three more dimes than nickels. The value of the coins is 3.55. Find the number of quarters in the collection.
Wednesday, September 24, 2014 by Lois

algebra
If you walk 3/4 mile and then jog 2/5 mile, what is the total distance covered?
Wednesday, September 24, 2014 by Jacqueline

Algebra
The changes in the price of a certain stock each day from Monday to Thursday of one week were -$2.25, +$0.50, +$1.50, and +$0.75. If the overall change in the stock price for the week was -$0.50, write an equation that can be used to find the change in the price on Friday and ...
Wednesday, September 24, 2014 by Shantel

algebra
to pass a course with an A grade, a student ,must have an average of 90 or higher. A students grades on three tests are 93,92 and 83. What is the score the student must get on the nest test to get an A average?
Tuesday, September 23, 2014 by Emily

math,algebra
(3^-1X^3)^2 x 12X^5 my work: 3/2X^6 x 12X^5= 36/2=18X^11 but the answer was 4/3X^11
Tuesday, September 23, 2014 by Chris

Algebra
Maggie is making fruit punch. She uses 2 1/2quarts of grape juice and 1 1/2 quarts of orange juice. 1 quart of grape =$1 less and 1 quart of orange juice. The total cost to make the fruit punch is $12.50 how much is each quart of each juice?
Tuesday, September 23, 2014 by Jeff

Algebra
Logan saves $5.50 in dimes and quarters over a week. He has 20 more dimes than quarters. Find the number of dimes and quarters he saves.
Tuesday, September 23, 2014 by Kyle

algebra
Becky a saleswoman,is offered two salary plans. Plan 1 is $450 per week salary plus a 3% commission of sales. Plan 2 in a $300 per week salary plus a 16% commission of sales.How much would Becky need to make in sales for the salary to be the same from both plans?
Tuesday, September 23, 2014 by annonomyous

algebra
the numbers on two consecutively numbered gym lockers have the sum of 131. what are the locker numbers?
Tuesday, September 23, 2014 by david

Algebra 1
1) Alexis Received an 85, 89, and 92 On Three Tests. How Many Does She Need To Score On Her Next Test In Order To Have An Average Of At Least 90? 2) 1/5(30 + a)< 5 HEEEELPPP 😂😂
Tuesday, September 23, 2014 by Mimii

Algebra
A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven. Write an equation that gives the tread depth as a function of the distance driven. Then predict what distance the tread depth will be 2 millimeters
Tuesday, September 23, 2014 by Riley

Algebra 2 (Please, help me!)
1. Explain how to find the slope of a line from a table of data. A: ? 2. Explain how to justify the Cross Products Property by using Mulitplication Property of Equality. A: ?
Tuesday, September 23, 2014 by Victoria

Algebra 2 Answer Check
If the rise and run are reversed for the linear equation y = 8x + 4, what is the slope of the new line? A: 0.125 or -1/8?
Tuesday, September 23, 2014 by Victoria

algebra 2
The average score on a standardized test is 750 points with a standard deviation of 50 points. What is the probability that a student scores more than 700 on the standardized test?
Tuesday, September 23, 2014 by Anonymous

Algebra 2 Help plz
The amount of paint an electric paint sprayer applies varies directly with time. A sprayer is set to apply 0.5 gallon in 2.5 minutes. Write an equation that gives the amount P of paint as a function of the time T. How much paint is applied if the sprayer is operated for 20 ...
Tuesday, September 23, 2014 by Josh M

Algebra
The selling prices of houses in a city during one year were normally ditributed with a mean of $259,000 and a standard deviation of $15,000. Which of the following is closest to the percentage of the homes that had a selling Price between $244,000 and $289,000? a. 81.8% b. 47....
Tuesday, September 23, 2014 by Jessica

Algebra 2
Explain how to justify the Cross Products Property by using the Multiplication Property of Equality.
Tuesday, September 23, 2014 by Victoria

Algebra 2
Explain how to find the slope of a line from a table of data.
Tuesday, September 23, 2014 by Victoria

Algebra 2
Explain how to find the slope of a line from a table of data.
Tuesday, September 23, 2014 by Anonymous

Math Algebra
At a shoe store, a salesman earns a weekly salary of $150. A salesperson is it also paid 2$ each pair of shoes he or she sells during the week.
Tuesday, September 23, 2014 by Auxiliary Improvement

algebra
1.Find an equation of the line that passes through (4,3) and is parallel to the line 3x-y=7. 2. Find the equation of the line through (4,3) perpendicular to the line 3x+y=7. Please show work so I know how to do it
Tuesday, September 23, 2014 by Hannah

Linear Algebra
Show that the set [(3,-2,4),(1,2,-1), (-6,4,-8) is linearly dependent by writing a non-trivial liner combination of the vectors that equals the zero vector. After some calculations I got t1=2, t2=0 and t3=1, but its my understanding that if a set is dependent, none of the t&#...
Tuesday, September 23, 2014 by Jervis

Vector
Let 𝑎⃗ and 𝑏 be two vectors in the xy plane making angles 𝜃 and ∅ with the x axis, respectively. Use vector algebra to show that: cos(𝜃 − ∅) = cos 𝜃 cos ∅ + sin 𝜃 sin ∅
Tuesday, September 23, 2014 by HelpMaths

algebra
the cinema sold 600 tickets total. adults tickets were $15 and childrens tickets were $8. they made a total of $7740. how much of each ticket were sold?
Tuesday, September 23, 2014 by lucy

Algebra
You are planing to put a title border along a 175-inch-wide wall in your kitchen. You want to use only whole titles. List all the possible whole number title widths of 8 inches or less, what size title could you use? 8 inch or 4 inch
Tuesday, September 23, 2014 by Diego

algebra
I really need that to my examples in my report tomorrow those i posted question, its a kind of test tomorrow please help me now please... even if now only...
Tuesday, September 23, 2014 by jhia

algebra
what is the system of equation of: 0.25x+0.15y=2.5 1.25x-1.25y=7.5
Tuesday, September 23, 2014 by jhia

algebra
What is the system of equation of: 1/2x+-2/3y=4 2x+1/3y=7
Tuesday, September 23, 2014 by jhia

algebra
what is the system of equation of: 1/2x+ 1/2y=4 3x-2y=5/4
Tuesday, September 23, 2014 by jhia

Algebra
Please show how to solve for problems like this: How many pounds of coffee that costs 4.50/lb be mixed with 20 lbs of coffee that costs 7.50/lb to make a mixture that costs 5.00/lb
Monday, September 22, 2014 by Ken

algebra
105/(-20+15) ------------------- 45/(-9)+12 Plz help me to solve this question. Thanks!
Monday, September 22, 2014 by Pam

Algebra
The vendor of a coffee cart mixes coffee beans that cost $7 per pound with coffee beans that cost $5 per pound. How many pounds of each should be used to make a 50-pound blend that sells for $5.79 per pound?
Monday, September 22, 2014 by Kim

Advance Algebra
An open box is to be made from a rectangular piece of tin 12 inches long and 10 inches wide by cutting pieces of x-inch square from each corner and bending up the sides. a. Find a formula that expresses the volume V of the box as a function of x. b. Find the domain of the ...
Monday, September 22, 2014 by Soledad Jose-Dilao, Ed. D. et al

algebra
the sum of to kim and tony's ages is 42, the difference in their ages is 4 years. what are the ages of kim and tony?
Monday, September 22, 2014 by greg

Algebra 2
Write the Expression as a complex number in standard form. 5i(3+2i)(8+3i)
Monday, September 22, 2014 by Kaitlyn

algebra 2
1. 5x+2>3x+10 =x>4 2. 8+2x< or equal too 6x-20 x> or equal too 7 3. 4(1-3n)-14>4(2n+3)-9n =? 4-12n-14>8n+12-9n 5. x/4<9 x<9*4=36 x<36 6. a/9>or equal to -15 a> or equal too -135 7. -p/7>-9 -p>-63 p<-63 8. -t/12> or equal too 6 -t>...
Monday, September 22, 2014 by anonymous

algebra 2
1. 5x+2>3x+10 =x>4 2. 8+2x< or equal too 6x-20 x> or equal too 7
Monday, September 22, 2014 by anonymous

algebra
a 25 inch piece of a steel rod is cut into 3 pieces so that the length of the second piece is twice the length of the first piece.The third piece is 1 inch longer than 5 times the length of the first piece.What are the lengths of the pieces
Monday, September 22, 2014 by john

algebra 2
x/4<9 x<9*4=36 x<36 a/9>or equal to -15 a> or equal too -135 -p/7>-9 -p>-63 p<-63 -t/12> or equal too 6 -t> or equal to 72 t< or equal too 72 how do u do these
Monday, September 22, 2014 by anonymous

Algebra
Simplify (4-2i/-10+5i) x (3-i/-3+i)
Monday, September 22, 2014 by Marie

Algebra
Solve -16t^2-8t=10 by completing the square
Monday, September 22, 2014 by Marie

Algebra
Given a point (-2,5determine a point that satisfies the specified symmetry. 1. Origin 2. y-axis 3. x-axis 4. y=x
Monday, September 22, 2014 by Nick

Algebra 2
Given a point (-2,5determine a point that satisfies the specified symmetry. 1. Origin (2,-5) 2. y-axis (2,5) 3. x-axis (-2,-5) 4. y=x ? Could you check if 1-3 is correct and could you help me on #4
Monday, September 22, 2014 by Alicia

Algebra
Show me how to solve -5-(-6)=
Monday, September 22, 2014 by Del

algebra
a charges $50 for gate and $3.50 per foot b charges $75 for gate and $2.25 per foot how many feet of fencing would result equal estimates?
Monday, September 22, 2014 by Anonymous

algebra
total $3.25 worth of coins nickels, dimes, quarters 2morenickels than dimes 1 more quarter than nickels how many of each coin
Monday, September 22, 2014 by Anonymous

ALGEBRA
A card is drawn from a standard deck of 52 cards. What is the probability this card will be a king or an ace? A. about 3.9% B. about 7.7% C. about 15.4% D. about 50%
Monday, September 22, 2014 by nautica

algebra
On a particular day, an airliner has 150 flights arrive early, 500 flights arrive on time, and 75 flights arrive late. What is the experimental probability that a flight will not be late? A. 75/725 B. 75/650 C. 500/650 D. 650/725
Monday, September 22, 2014 by nautica

algebra
In a high school basketball game, a player on the home team makes two free throws. One student asks the student next to her what he thinks the probability of hitting two free throws in a row is. The student replies, "The probability of him making a free throw is probably ...
Monday, September 22, 2014 by nautica

algebra
Bob is going to China, and he wants to bring some DVDs on the airplane. If Bob has a collection of DVDs, in how many ways can he bring of them? A.3 B.5 C.455 D.2,730
Monday, September 22, 2014 by nautica

algebra
In how many ways can a -person committee be formed from a group of people? A.30,240 B.63 C.126 D.252
Monday, September 22, 2014 by nautica

advanced algebra
The mean test scores with standard deviations of four English classes are given below. Class Mean Standard Deviation Mrs. Jones 89 1.9 Mrs. Rijo 82 1.4 Mr. Phan 73 3.4 Mrs. Scott 90 6.1 Which statement is most likely to be true?
Monday, September 22, 2014 by nautica

algebra
Is this set a subspace of R3 or not? Explain why or why not. Span{[1 2 1],[-1 1 3]} I've tried to do a three variable three unknown equation to solve for the scalars for each of the vectors but when doing it got very wrong numbers.
Monday, September 22, 2014 by Jackk

Algebra
Solve 9 - c <2 or -3c > 15 My answer is 7 or -5
Monday, September 22, 2014 by Paula

Algebra
Solve 5 < x-2 < 11 My answer is 7 < x < 13
Monday, September 22, 2014 by Faye

algebra
3x-5y+5z=-19 5x-4y-3z=-45 x-y+4z=12
Sunday, September 21, 2014 by Anonymous

Algebra 2
A football is thrown by a quarterback, the footballs height in feet h with respect to time in seconds T can be modeled using your quadratic function. You want to know when the football will be 7.5ft in the air because that's about the right height that your favorite ...
Sunday, September 21, 2014 by BT

Algebra
One base of trapezoid AGIE is four less than three times the other shorter base. The height of the trapezoid is one half of the shorter base. The area of the trapezoid is 210 square inches. Find the lengths of the bases and the height.
Sunday, September 21, 2014 by Raven

Algebra
When nine is added to both the numerator and the denominator of an original fraction, the new fraction equals six sevenths. When seven is subtracted from both the numerator and the denominator of the original fraction, a third fraction is two thirds. Find the original fraction...
Sunday, September 21, 2014 by Raven

Algebra
The units digit of a two-digit number is two more than four times the tens digit. When the digits are reversed, the new number is thirteen more than three times the original number. What is the original number? Please use algebraic equations to justify your answer.
Sunday, September 21, 2014 by Raven

Algebra
The units digit of a two-digit number is two more than four times the tens digit. When the digits are reversed, the new number is thirteen more than three times the original number. What is the original number?
Sunday, September 21, 2014 by Raven

algebra
Express the statement in terms of an inequality involving an absolute value. (Give your answer in terms of hours.) The arrival time t of train B must be at least 10 minutes different from the 2:00 P.M. arrival time of train A.
Sunday, September 21, 2014 by Jenny

Algebra
x^3-2x^2-1+2=0?
Sunday, September 21, 2014 by Anonymous

pre algebra help
9. how you would convert the repeating, non terminating decimal to a fraction? explain the process as you solve the problem. 0.1515 I don't understand this question can someone help explain this?
Sunday, September 21, 2014 by jaden

algebra
what if a boat used 21 gallons of gas to go 64miles, how many miles can the boat travel on 84 gallon of gas
Sunday, September 21, 2014 by nadia

Algebra
Solve 5<x-2<11 My answer is 7<x<13
Sunday, September 21, 2014 by Paula

Algebra 2 (Please, help me!)
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? A: ?
Sunday, September 21, 2014 by Victoria

Algebra 2 Answer Check
Solve. 2x + 4(x + 1) = 6(x + 2/3) A: No solution.
Sunday, September 21, 2014 by Victoria

Algebra
What is a1 if a33 is equal to -2p and a74 = 26p? Our topic is arithmetic series and sequence. Thanks.
Sunday, September 21, 2014 by Erin

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 by Ardine

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Homework Help: Math