Friday
July 31, 2015

# Homework Help: Math

## Recent Math Questions

Which hill described in the table is the steepest and why? Street. Horizontal distance vertical (ft). Rise of Street (ft) Dixie hill. 100. 60 Bell hill. 100. 50 Liberty hill 100. 20 A. Dixie hill; it rises 5 feet for every 3 feet of horizontal travel. B. Dixie hill; rises 3/5 ...
Friday, May 8, 2015 by AG Girl

Math
A Canadian television station shows 16 minutes of commercials every hour between 8 am and 11 pm everyday. How many minutes of commercials are there on the station between 8 am and 11 pm in 365 days?
Friday, May 8, 2015 by Layla

Math
Emma's rectangular garden is enclosed with 24 m of fencing. What is the least possible area of Emma's garden? What is the greatest possible area? I don't understand what to do? How do we find the least and greatest possible area? Lauren Grade 6
Friday, May 8, 2015 by Lauren

math
A marksman is shooting at a target hits it 12 1/2% of the time. How many times must he shoot to register 100 hits.??
Friday, May 8, 2015 by sia

math
when the price of chain increased from 16.4 cents to 20.5 cents . What was the percent increase in the cost of chain.?
Friday, May 8, 2015 by Sia/sarah sisters

math
solve y"+4y-4z'=3x z"+z-y'=1-x where y(0)=z(0)=1 and y'(0)=z'(0)=0 by laplace transform
Friday, May 8, 2015 by assma

A private plane traveled from Seattle to a rugged wilderness , at an average speed of 252 mph . on the return trip , the average speed was 180 mph . if the total time was 9 hours how far is Seattle from the wildness
Friday, May 8, 2015 by BEN

strategic math
A roof is supported by 7 rafters, each 6 1/2 feet long at 70 cents a running foot. How much did these rafters cost?
Friday, May 8, 2015 by Sia

general math
if 3 1/2 bags of seed cost \$35, what will 4 1/2 bags cost?
Friday, May 8, 2015 by Sara

math
the baseball game lost 13 games this season. that was 5/8 of all they played. how many games did they play this season?
Friday, May 8, 2015 by kylaa

math
what is the theme of the story the Christmas goblin by Charles Dickens?
Friday, May 8, 2015 by lizzy

MATH
Your original purchase price was \$825.00 plus 7% sales tax. You enter into an agreement where the interest (12.5% APR) is waived for the first 12 months provided you make the required monthly payments; otherwise the interest is accrued from the date of purchase. You miss the ...
Friday, May 8, 2015 by Sandra

Explain how to write a function rule from the table below. Then write a function rule. x|2|4|6| y|1|0|-1|
Friday, May 8, 2015 by Anono

Hi nobody helped me can you check on what I asked? Thank us
Friday, May 8, 2015 by AG Girl

Friday, May 8, 2015 by Anono

math
What function is a quadratic function? A.y=1/y B.y=5x-7 C.y=-x2+2y D.y=|x| Is the answer C?? Thank you
Friday, May 8, 2015 by Anono

math
The data in the table illustrates a linear function. What is the slope of the linear function? x| 0| 2|4|6 y|-5|-2|1|4 Please shoe me how to figure this out? Thank you.
Friday, May 8, 2015 by AG Girl

Math
1.What is the unit rate for Fred's Sub shop?(Will post photo/link in the comments) A. \$10 for 2 subs B. \$5 for 2 sub C. \$1 for 1/5 of a sub D. \$30 for 6 subs 2. What is the slope-intercept equation for the cost of a sub at Fred's sub shop? A. y = 2x B. y = 10x C. y = ...
Friday, May 8, 2015 by Savaline

Math - Polynomials
off-topic: yay it's friday :D Simplify each polynomial. 1. 6g + 8k + 9g + 2k A) 3g + 10k B) -3g + 10k *** C) 17gk D) 10k - 3 2. -4x + 6x2 + 5x A) 7x^3 B) 6x^2 + 9x *** C) 6x^2 - 9x D) 6x^2 + x 3. a^2 + 5a - 3a^2 A) 5a + 2a^2 *** B) 5a - 2a^2 C) 2a^2 + 5a D) 5a - 3a^2 Are ...
Friday, May 8, 2015 by Johnny

Economic Math
Suppose the supply and demand for milk is described by the following equations: Qd=600-100P, Qs = -150+150P, where P is price in dollars . Qd is quantity demanded in millions of gallons per year. A. Create supply and demand tables corresponding to these equations. B. Graph ...
Friday, May 8, 2015 by Abraham

I'm re-posting corrections originally from Wednesday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number ...
Friday, May 8, 2015 by Alexis

math
If A + B + c = 180 then show that sinA + sinB + sinC=4cosA/2. cosB/2 . cosC/2
Friday, May 8, 2015 by Robert

math
97 is 5% of what number
Friday, May 8, 2015 by Anonymous

Math
The sea ice around the south pole fluctuates between 18 million square kilometers in September to 3 million square kilometers in March. During how many months are there more than 15 million square kilometers of sea ice?
Friday, May 8, 2015 by Michael

Math
Which table of values shows y=x-8? A. x|y -5|3 -8|0 -7|1 B.x|y -5|-13 -8| 0 -7|-15 C.x|y -5|-13 -8|0 -7|1 D.x|y -5|-13 -8|-16 -7|-15 Is the answer D? Thank you.
Friday, May 8, 2015 by AG Girl

math
the ratio of gasoline to oil need is 16:1 if you have 3.5 ml of oil how many ml of gasoline must you add to get the proper mixture find answer
Thursday, May 7, 2015 by mona

Math
provide that 4sin¦Ðsin(60¡ã-¦​;Ð)sin(60 ¦Ð)=sin3¦Ð
Thursday, May 7, 2015 by Anjan sarkar

Math
Eduardo started a business selling sporting goods. He spent \$7500 to obtain his merchandise, and it costs him \$300 per week for general expenses. He earned \$850 per week in sales. What is the minimum number of weeks it will take for Eduardo to make a profit? Write an ...
Thursday, May 7, 2015 by Sara

The Rowans decided to build a pool in their backyard. What would be the area and perimeter of this pool? Let X=20 1/2 feet and y=2 1/2 yards. Pls help me!!
Thursday, May 7, 2015 by ary

Tony made 85% of his field goal attempts if he made 40 attempts how many field goals did he make? Pls help!!
Thursday, May 7, 2015 by ary

Math
The length of a rectangle is four times its width. If the perimeter is at most 130 centimeters, what is the greatest possible value for the width? 13 cm 21.7 cm 26 cm 52 cm
Thursday, May 7, 2015 by Sara

Math
Using the following information for the Vertex and Directrix, write the standard form equation for the parabola with what is given below. Vertex: (-2,1) Directrix: x=1
Thursday, May 7, 2015 by Gina

math
Marcus has 4 ties and 5 shirts and 3 pair of pants. How many outfits can he make?
Thursday, May 7, 2015 by gianna

Math
A grade six class is having a fundraiser. The class boys have three bags of apples. Each bag has 24 apples. The total cost of the three bags of apples is \$12.24. The class sells the apples for 0.75 each. How much will the class gain per apple?
Thursday, May 7, 2015 by Lori

math
Use the data in the table to find the slope of the line. x 3 6 9 12 y 1 -1 -3 -5 A. 3/2 B. -3/2** C. -2/3 D. 2/3 am i right?
Thursday, May 7, 2015 by XenaGonzalez

Math
The 13-member math club needs to choose a student government representative. They decide that the representative, who will be chosen at random, CANNOT be any of the 3 officers of the club. What is the probability that Samara, who is a member of the club but NOT an officer will...
Thursday, May 7, 2015 by Anonymous

Math
There are 25 computers in a math lab. There are 6 activity booklet for very 2 computers in the math lab. How many activity booklets are in the math lab?
Thursday, May 7, 2015 by Amber

math
William, Jan, and Greg have a total of \$26. Greg has the most money. Jan has twice as much money as William. Greg has \$11. How much money does Jan have?
Thursday, May 7, 2015 by Anonymous

math
When Cheryl goes mountain climbing, she rests 5 minutes every 15 minutes that she climbs.If Cheryl combined time is 2 hours, how many minutes does she rest? P.S I don't want the answer i just need to know the operation to solve this problem
Thursday, May 7, 2015 by Laila

math
I have a question on my math that my teacher cant help me with because this one is for try it. Can you help me see if it is right?: It says: 12 . Wich is equal to 30 hundreths? A)3 thousandths B)3tenths C)3 tens D)3thousands I think the answer is B but, it really confuses me ...
Thursday, May 7, 2015 by nicole

Math
John and Jack to help their mothers make fudge for their classroom parties in different classes John's class received 2 1/2 pounds for 25 children Jack's class received 3 1/2 pounds for 35 children which class was able to each more fudge per student?
Thursday, May 7, 2015 by Grace

Math
When the price of paper increases from \$250 to \$257 per ton, the quantity supplied increases from 350 to 390 tons per day. The price elasticity of supply is:
Thursday, May 7, 2015 by Denise

chemistry
A particular brand of toothpaste claims to contain 0.24 wt% sodium fluoride. What mass in grams of fluoride ion would be present in the average amount of toothpaste used to brush one's teeth, about two grams? Now this is a weight percent concentration question, I know that...
Thursday, May 7, 2015 by frank

Math- Sequences
What are the first four terms of the sequence represented by the expression n(n-2)-3? -5, -2, 1, 4 -4,-3, 0, 5 3, 0, 3, 6 2, 0, 2, 4 I believe it's C?
Thursday, May 7, 2015 by Juanito

math
a fisherman has estimated that it takes 4 minutes to paint each square foot of a hull of his boat. How much time should the fisherman allow for the painting of the hull, if the hull were composed of 2 sides 28.5 feet by 10.5 feet?
Thursday, May 7, 2015 by Anonymous

Math
Why did Gonzo walk around carrying Ice Cream and a pair of sparrows?
Thursday, May 7, 2015 by Nana13

math collage algebra
A Norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular window (see figure). The perimeter of the window is 12 feet.
Thursday, May 7, 2015 by nancy Medjo

Math
1.6g+8k-9g+2k 3g+10k -3g+10k*** 17gk 10k-3 2.-4x+6x^2+5x 7x^3 6x^2+9x 6x^2-9x 6x^2+x*** 3.a^2+5a-3a^2 5a+2a^2 -2a^2+5a*** -3a^2+6a 5a-3a^2 4.3x^2+8x+7x 3x^2+15x*** 18x^3 3x^2+1 3x^2-x 5.Find the degree of -5w-4w^2+7w+16 -5 16 14 3*** ***=my answer
Thursday, May 7, 2015 by fairypenguingirl

math
A contractor, Mr. Parker charged his customer \$100 for painting a rectangular ceiling of length 5.4m and width 3m. Another contractor, Mr. Lewis charged his customer \$115 for painting a rectangular ceiling of length 5.7m and width 3.2m.The quality of work is the same and both ...
Thursday, May 7, 2015 by Linda

math
what are the next three terms in the sequence -3 6 15 24 35, 46, 57 34, 44, 54 33, 44, 56 33, 42, 51 i think it's d
Thursday, May 7, 2015 by autistic manchild

Math discussion
As part of their job, meteorologists use data to make weather predications. How accurate are their predications? What are other scenarios in which you would use to data to make a predication? How would you defend your predication using data?
Thursday, May 7, 2015 by M

math
who would you write 36% of what number is 18?
Thursday, May 7, 2015 by Anonymous

math
what is the total amount of edging that would be required to cover all edges of a rectangular prism measuring 10 cm by 30 cm by 15 cm?
Thursday, May 7, 2015 by sharon

MAth
Calculate the perimeter of a right triangle where the legs are 6 cm and 8 cm
Thursday, May 7, 2015 by sharon

Math
How do I figure out what quadrilateral has 90 90 125 65 digrees on each side?
Thursday, May 7, 2015 by Alyssa

Math
find the three geometric means between -2/3 and -54
Thursday, May 7, 2015 by Aimee

Math
find the third term in the expansion of (3x-y)^6
Thursday, May 7, 2015 by Aimee

math
Rich has 3 pieces of pizza. Each pizza end forms a 20° angle. If all of the pieces were placed together what would the size of the angle be?
Thursday, May 7, 2015 by nicole

Math
Hint: 6% x \$1,000,000 / \$1,000,000 – {20% x (\$1,000,000 – (6% x \$1,000,000))] = ?
Thursday, May 7, 2015 by D

Math
Hint: 6% x \$1,000,000 / \$1,000,000 – {20% x (\$1,000,000 – (6% x \$1,000,000))] = ?
Thursday, May 7, 2015 by Anonymous

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...
Thursday, May 7, 2015 by OceanBreeze

Math
Construct a square based pyramid of volume 216cm3. What are the dimensions?
Thursday, May 7, 2015 by Keon Gonzales

Math
Insert parentheses to make this equation correct: 7 - 6 x 7 / 5 + 7 = - 43.4 / is used for division sign
Thursday, May 7, 2015 by Sue

Math
Simplify 1) x + 1/ x - 1 + x^2 -1 / x + 1 2) 4x/x^2 - 1 - x + 1/x - 1
Thursday, May 7, 2015 by luniva

Math
A \$10 bottle of detergent yields 10 loads of laundry. Allen tries this detergent & finds he can do only 8 loads of laundry from 1 bottle. What fraction of the advertised # of loads was he able to do?
Wednesday, May 6, 2015 by Des

Math
i really dont understand. i tried figure out. i started with the first charges: sqrt[2(20)(100))/0.05} Suppose you have a choice of three suppliers for footballs. the first charges \$100 per delivery but won't deliver more than 200 at a time; the second charges \$100 also ...
Wednesday, May 6, 2015 by Mirella

Math
Jeanine used 21/2 cups of flour to make muffins and 1 3/4 cups of flour to make biscuits. After borrowing 1/4 cup of flour,she had 2 1/4 cups left to make bread. How much flour did she have to begin with?
Wednesday, May 6, 2015 by Anonymous

I'm posting corrections from yesterday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number and choose a ...
Wednesday, May 6, 2015 by Alexis

Math
As part of a pancake recipe, you mix 3/4 cup of milk for every 1 cup of flour to make 7 cups of batter. How much of each ingredient do you use?
Wednesday, May 6, 2015 by Amber

math
write 10 1/2% of 60
Wednesday, May 6, 2015 by Anonymous

math
Q - 8 = -9
Wednesday, May 6, 2015 by snm

math
use L'Hospital's rule to evaluate: limit as x approaches to 0 of (1/sinx -1/x)
Wednesday, May 6, 2015 by linda

math
48,778 ; 41,046 ; 29,083 ; 36, 394 ; 32,302 ; 42,787 ; 41,972 ; 37,229 ; 25,314 ; 31,920 ; 38,030 ; 38,445 ; 30, 750 ; 38,886 ; 36,770 ; 46,046 use five classes. is it reasonable to assume that the life spans are normally distributed? I don't get what am I suppose to do?
Wednesday, May 6, 2015 by Achuuu

Math
This is my sample: 29,083 ; 25,314, 31,920 ; 30,750 ; 32,302 I need to find the mean and standard deviation of this sample?! How can i assure the life spans are normally distributed?
Wednesday, May 6, 2015 by Aqueen

calc (confused)
A wedge is cut from a right circular cylinder of radius r by two planes, one perpendicular to the axis of the cylinder and the other making an angle (beta) with the first. Find the volume of the wedge by slicing perpendicular to the y-axis. Please show all steps and ...
Wednesday, May 6, 2015 by beam

Math
Find the level of elevation of the sun when a 842 foot building casts a shadow72.6 feet long
Wednesday, May 6, 2015 by Tim

math
City wide delivery service uses vans costing \$24800 each. How much will the company have to invest today to accumulate enough money to buy six new vans at the end of 4 years? City wides bank is currently paying 12% interest compounded quarterly
Wednesday, May 6, 2015 by jasmine

Math Help
With the given information below, write the standard form equation for the parabola. 1.) Vertex: (-1,2) Focus(-1,0) 2.) Vertex: (-2,1) Directrix x=1
Wednesday, May 6, 2015 by Katie

Math
What is the exact value of sin(-15 degrees)?
Wednesday, May 6, 2015 by Anonymous

math
1. two circles. x^2+y^2-16x-8y+35=0 and x^2+y^2=5 are given. a. write the equations in the standard form. b.prove that the circles touch each other. c.hence calculate the equation of their common tangent 2. find the equation of a. circle. with centre c(2;3) and which I is the ...
Wednesday, May 6, 2015 by Anonymous

Math
. At a track meet, 50 people ran the 100-meter dash. 2 people finished in 11 seconds, 5 people finished in 12 seconds, 8 people finished in 13 seconds, 10 people finished in 14 seconds, 21 people finished in 15 seconds, 2 people finished in 16 seconds, and 2 people finished in...
Wednesday, May 6, 2015 by Ashley

math
Suppose the matrix A has eigenvalues lambda_1 = -1, lambda_2 = 1, lambda_3 = 2, with corresponding eigenvectors v_1 = [0 5 3]^T, v_2 = [2 0 1]^T, v_3 = [1 -1 0]^T. If you diagonalize A as A = PDP^-1 with P = [2 2 0; p_21 p_22 2; p_31 p_32 p_33], D = [2 0 0, 0 1 0; 0 0 -1], ...
Wednesday, May 6, 2015 by Anonymous

math
A. determine the equation of the circle passing through points A(3;2) B(8;12) and C(-6;-2) B. a chord of the circle x^2+y^2=50 has a midpoint at (6;3). determine the equation of this chord.
Wednesday, May 6, 2015 by Anonymous

finance math
A single person earns a gross biweekly salary of \$780 and claims 6 exemptions. What is the person's net pay? a. It is the same as the gross pay. b. It is \$11 more than the gross pay. c. It is \$11 less than the gross pay. d. It is \$13 less than the gross pay.
Wednesday, May 6, 2015 by angela

math
A countrywide estate agency specializes in selling commercial ventures. Their records show that the mean selling time is less than 90 days. Because of recent economic conditions, they believe that the mean selling time is now greater than 90 days. A countrywide survey of 100 ...
Wednesday, May 6, 2015 by Frans

math
find the slope of the following graphs. x -1,0,1,2 y 4,2,1,-2 a.1 over 2 b.2 c.-2* d.- 1 over 2 find the slope of the following graphs. x -2,2 y 5,1 a.3 over 2 b.1 c.-1* d.- 3 over 2 find the slope of the following graphs. x 0,3 y 0,2 a.2 over 3* b.3 over 2 c.3 d.- 2 over 3 ...
Wednesday, May 6, 2015 by collin

math
prove that: 4cosec2ACot2A=cosec^2A - sec^2A
Wednesday, May 6, 2015 by peter

Math
A cylinder cop has a circular base of radius 7cm & height of 10cm taking 22/7(a)calculate it curved surface(b)d area of it circular base
Wednesday, May 6, 2015 by patience daniel

Math
There are 64 students. 80% scored a 75 on a final test. How many students scored a 75?
Wednesday, May 6, 2015 by Ron

math
find the slope of the line that goes through the following points: x 0 1 2 3 _________________ y -4 -3 -2 -1
Wednesday, May 6, 2015 by riri

math
Terrell has a water purifier for backpacking. It will purify 1 liter of water in 1 minute. How long would it take Terrell to purify enough water for 4 canteens that each hold 750 mL, and two that each hold 1.5 L?
Tuesday, May 5, 2015 by Ri!@#\$%^&a Papaiya

1. Cmdr's coffee shop offers a coffee special with coffee syrups of vanilla, chocolate, and caramel. You can also choose between a latte, and cappuccino. How many different coffees can you make for the special? Ans: 6 (VLatte, ChocLatte, CLatte; VCap, ChocCap, CCap) 2. ...
Tuesday, May 5, 2015 by Alexis

Math/algebra
Post a New QuestionCurrent Questions Homework Help: Algebra Posted by Kristen on Tuesday, May 5, 2015 at 7:53pm. A bank teller counts her \$10 and \$5 bills at the end of the day. She has a total of 70 bills. The total value of the money is \$595. Let f represent the number of \$5...
Tuesday, May 5, 2015 by Kristen

Math
A) Let x represent the number of messages posted each month on a social netwroking website. B) let x represent the length of time it takes to get to work. I got A) continuous B) discrete Am i correct??
Tuesday, May 5, 2015 by Aqueen

Math
How do you find the quadratic equation, in standard form, that has the roots x= (2±√5)/3
Tuesday, May 5, 2015 by Lily

Math
What does a and c stand for in the quadratic function Ax^2+bx+c
Tuesday, May 5, 2015 by M

Math
Q. Sammy loves miniature golf. Last year he played 572 games of miniature golf. Assuming that Sammy played the same number of games each week, how many games per week did Sammy play last year? Hint: there's 52 weeks in a year! A. Do I divide 572 by 52?
Tuesday, May 5, 2015 by Jeanie

Math
A student covers the outside of a show box with construction paper. If the student does not cover the lid, what is the surface area that is covered? Please show work. Possible answers: A) 982.25 B) 1433.50 C) 1964.50 D) 5044.50
Tuesday, May 5, 2015 by Victoria

math
A certain sum of money was shared among 3 friends, A, B, and C. A received 3/7 of the money, and B got 2/3 as much as A. C received \$49 less than A. a) Find the ratio of B’s money to C’s money. b) How much money did C receive?
Tuesday, May 5, 2015 by jessi

Math
Determine which function has the greater rate of change in this question? These are the points on the graph. A. (-1,0), B(0,1) C(1,2) This is the table X, -1,0,1,2 Y, 0,1,2,3 A. The rates of change are equal. B. The graph has a greater rate of change. C. The table has a ...
Tuesday, May 5, 2015 by Dove

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