Thursday
February 11, 2016

Homework Help: Math

Recent Math Questions

Math
3.Belinda wants to invest \$1000. The table below shows the value of her investment under two different options for three different years: Number of years 1 2 3 Option 1 (amount in dollars) 1100 1210 1331 Option 2 (amount in dollars) 1100 1200 1300 Part A: What type of function...
Saturday, December 19, 2015 by Daniella

Math
2.The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price of two products, A and B, over time. The price f(x), in dollars, of product A after x years is represented by the function below: f(x) = 72(1.25)x ...
Saturday, December 19, 2015 by John

Math
1.A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: f(n) = 12(1.03)n Part A: When the scientist concluded his study, the height of the plant was approximately 16.13 ...
Saturday, December 19, 2015 by Blake

Math
Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 3x + 10 y is less than negative 3 over 4 times x minus 1 Part A: Describe the graph of the system, including shading and the types of lines graphed...
Saturday, December 19, 2015 by Riley

Math
Part C: How can you solve the equation 8x = 2x + 2 graphically?
Saturday, December 19, 2015 by Kayla

Math
1.A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: f(n) = 12(1.03)n Part A: When the scientist concluded his study, the height of the plant was approximately 16.13 ...
Saturday, December 19, 2015 by Math student

math
10 years ago simrans mother was 4 times older than her daughter . after 10 years the mother will be twice oder than her daughter . find present age of simran
Saturday, December 19, 2015 by Anonymous

math
The weight of a container completely filled with water is 2.25 kg. The container weighs 0.77 kg when it's 0.2 part is filled with water. Find the weight(in kg) of the container when0.4 part of it is filled with water? ABCD is cyclic quadrilateral, AB is the diameter of the...
Saturday, December 19, 2015 by jyoti

Math
what is the future value of \$490 per year for ten years compounded annually at 11%
Friday, December 18, 2015 by Jasmine

Math
What is 1,112,433 rounded to the nearest ten thousand? A. 1,100,000 B. 1,200,000 C. 1,110,000 D. 1,120,000 I think C because the 2 in 112, is the tenth of a thousand, and the 2ond 3 in 433 is the tenth of a hundred and because to round up you have the numbers have to be 5 or ...
Friday, December 18, 2015 by Jocelynn

Math
Explain one way to find the equivlent percent for 4/5
Friday, December 18, 2015 by Shahd alsomairi

Math
-6-7(c+10) A: 64-7c B: -76-7c C: 4-13c D: -16-13c We're suppose to simplify the expression can you help me? i think the answer is B
Friday, December 18, 2015 by Boricua

NEED Math Help ASAP PLZ!!!
I dont know how i got this question wrong. In a direct variation, the constant of proportionality is -3. Which of the following would be its equation? A) y = x - 3 B) -3y = x C) y = -3x D) -3 = xy I put A as my answer... but it says the answer is C! How is C the answer? PLZ ...
Friday, December 18, 2015 by Scarlett

Math
If a recipe calls for 2/3 cup flour and I am making 1/2 how much flour would I need?
Friday, December 18, 2015 by Shannon

Math
solve the equation 1. y-5/3=1 a) -2 <-------------------- b) 8 c) 18 d) 6 2. 6x + 29 = 5 (1 point) –4 –18 204 –144 <------------------------ 3. Combine like terms: –21a + 16a a) –5a b) 5a c) 37a <--------------------------- d) s–37a ...
Friday, December 18, 2015 by Anonymous

Math
what is the sale price for a video game that was originally priced at \$59.99 and now is 10% off. 1 50.99 2 53.99 3 55.24 4 58.99 Calculate the interest earned on a saving account with 660.00 that is invested at 3.5% annual simple interest for 5 years 1 23.10 2 26.40 3 69.30 4 ...
Friday, December 18, 2015 by asdflk;jasdfla;kjsdfl;

Math
1. 3w – 10w a. 13w b. –7w <--------------------------- c. –7 d. 7w 2. y + 1.2y +1.2z a. 2.4yz b. 1.3y + 1.2z c. 1.2y2 + 1.2z <------------------- d. 2.2y + 1.2z 3. 6r + r – 5r a. 2r <-------------------- b. 1r + r c. 0r d. 7r – 5r 4. 5x + 2(x...
Friday, December 18, 2015 by Anonymous

Math
I have trouble solving distance rate problems. I have a worksheet that I want to complete. I will post one question in hopes that someone can break it down so I am able to solve other distance rate problems. (Step by Step please.) Thank you. An aircraft carrier made a trip to ...
Friday, December 18, 2015 by Malinda

Math
Ricky drove from town A to town B in 3 hours because he drove 15 miles per hour slower on the return trip. How fast did Ricky drive on the trip from town A to town B? I know the answer is 37.5mph but can you please explain it and break it down so that I am able to work similar...
Friday, December 18, 2015 by Malinda

Math
Which is greater? - -- 2.396 _____ 2.3965 Can you also explain to me how I can compare to tell which one is larger. Thank you
Friday, December 18, 2015 by Malinda

Math (2 Part Question)
(Part 1) A local parking garage cost \$12.00 a day, but if purchase a pass that costs \$25.00 a month, the rate drops to \$8 dollars a day. After how many days would it be more cost effective to buy the pass? You are saving \$4 dollars a day buying the pass. The pass costs \$25.00...
Friday, December 18, 2015 by Malinda

Math I'm DYING!!!
1. y - 5/3 =1 2. Combine like terms: -21a + 16a 3. Simplify the expression: 9a - b - 2a - 10b 4. 5(x + 10) + x 5. -4n + 7 + 2n = 1 Thanks for everything!!
Friday, December 18, 2015 by Sakura

Math
X= -8 Y= -2x-12 Find the coordinates
Friday, December 18, 2015 by Alec

Math help plz?
6. Which inequality matches the graph? The graph is -3 -2 -1 0 1 2 3 4 and there is a red line from 1 to -3 The answer is 3x + 1 _< 4 but idk why? 19. Which inequality matches the graph? -3 -2 -1 0 1 2 3 4 and it has a red line from 2 to 4 the answer is 8p + 5 > 21 but ...
Friday, December 18, 2015 by Alexis

Math
I really need help solving this! For questions 6-7, simplify the expression. 6. -6 - 7(c + 10)(1 point) A. 64 - 7c B. -76 - 7c C. 4 - 13c D. -16 - 13c I don't know which to choose, I need help solving this!
Friday, December 18, 2015 by Angel

math
Chase is 34 years younger than Rosa. 8 years ago, Rosa's age was 3 times Chase's age. How old is Chase now?
Friday, December 18, 2015 by jaraya

math
3. -3p > -48 The answer is p < 16 but idk why? 6. Which inequality matches the graph? The graph is -3 -2 -1 0 1 2 3 4 and there is a red line from 1 to -3 The answer is 3x + 1 _< 4 but idk why? 19. Which inequality matches the graph? -3 -2 -1 0 1 2 3 4 and it has a ...
Friday, December 18, 2015 by Alexis

math percent
Find the percent of markup. Round to the nearest tenth \$31.00 to \$35.00
Friday, December 18, 2015 by A

math
Find the percent of markup. Round to the nearest tenth \$31.00 to \$35.00
Friday, December 18, 2015 by A

math
The sum of interior angels and the sum of exterior angles of polygon are in the ratio 9:2.find the sides of regular polygon.
Friday, December 18, 2015 by rohit

Math
IF I INVESTED 100 MILLION DOLLARS IN A 4.5 % CD FOR 2 YEARS HOW MUCH WOULD IT BE WORTH AFTER 2 YEARS.
Friday, December 18, 2015 by GARY

Math
Write the fraction as a percent. Round to the nearest hundredth of a percent where necessary. a) 33.33% b) 66.67% c) 83.33% <------------- b) 1.20% 2. Write the decimal 0.063 as a percent. a) 0.63% b) 6.3% <-------------- c) 63% d)630% 3. A survey at your school found ...
Friday, December 18, 2015 by Anonymous

Math
During its first week of business, a market sold a total of 108 apples and oranges. The second week, five times the number of apples and three times the number of oranges were sold. A total of 452 apples and oranges were sold during the second week. Determine how many apples ...
Friday, December 18, 2015 by Sally

math
order the numbers 0.64, 2/3, 65%, and 7/10 from least to greatest
Friday, December 18, 2015 by Sheila le buff

Math
In 2000, the circulation of a local newspaper was 3,250. In 2001, its circulation was 3,640. In 2002, the circulation was 4,100. Find the percent of increase in the newspaper's circulation from 2000 to 2001 and from 2001 to 2002. Which period had the highest percent of ...
Friday, December 18, 2015 by Anonymous

Math
Tom Buys a shirt for \$22.00 plus 7% sales tax. His cousin buys a shirt for \$18.00 plus 4% sales tax. How much do Tom and his cousin pay for the shirts? Who spent more on tax?
Friday, December 18, 2015 by Anonymous

Math
Partial Fraction Decomposition: 2x^2+x+8/ (x^2+4)^2
Friday, December 18, 2015 by anonymous

Math
The total cost C(q) of producing q goods is given by the following equation. C(q) = 0.01q^3 − 0.6q^2 + 13q a) What is the fixed Cost? b) What is the maximum profit if each item is sold for \$9? (Assume you sell everything you produce. Round your answer to the nearest cent...
Thursday, December 17, 2015 by Jenner

MATH HELP
The side of a square is Three raised to the five halves power inches. Using the area formula A = s2, determine the area of the square. This is the side of the square in fraction(3^5/2) A = 9 square inches A = 15 square inches A = 225 square inches A = 243 square inches PLS ...
Thursday, December 17, 2015 by Oscar

math
Imagine having a urn with 20 balls, of which 8 are black and the remaining white. You are to draw 5 balls out of the urn. What is the probability that at least three of the balls drawn are white?
Thursday, December 17, 2015 by Abigail

MATH HELP
When the function f(x) = 4(2)^x is changed to f(x) = 4(2)^x − 13, what is the effect? There is no change to the graph because the exponential portion of the function remains the same. The x-intercept is 13 spaces higher. The y-intercept is 13 spaces lower. All input ...
Thursday, December 17, 2015 by Oscar

Math
For the first 30 days of a flu outbreak, the number of students on your campus who become ill is increasing. Which is worse: The number of students with the flu is increasing arithmetically or is increasing geometrically?
Thursday, December 17, 2015 by Dee

Math
find value of (f•g)'(x) at x=1 for f(u)=cot(pi*u/4), u=g(x)=6(square root(x)) By the way, the little dot is supposed to be hollow above, as in f of g of x.
Thursday, December 17, 2015 by Beth

Math
of the 200 eighth graders, 112 are going on the class field trip. What percent of the eighth grade is going on the field trip? 1 40% 2 50% 3 56% 4 88%
Thursday, December 17, 2015 by China one

Math
in 200, the population at Arlington Middle School was approximately 421 students. In 2010, the population was approximately 584 students. Find the percent of change in the population at Arlington Middle School from 2000-2010 and identify it as an increase or decrease 1 27.9% ...
Thursday, December 17, 2015 by China one

PLZ Check My Math?
Sorry! Another rates/proportions question! "Myles mows lawns during the summer to earn money. Since he is trying to save money for a car, he tries not to spend very much of it. In fact, his goal is to save \$5 for every \$7 he makes. If Myles made \$128 this week, how much ...
Thursday, December 17, 2015 by Nat

Math
A swimming pool is 15 by 30 feet and a consistent 5 feet deep. You are painting the walls and floor of the pool. If a gallon can of paint covers 250 square feet, how many gallon cans would you need to buy?
Thursday, December 17, 2015 by Malinda

Math
Pencils sell for 98 cents per dozen. How much more per pencil does it cost to buy 5 for 50 cents?
Thursday, December 17, 2015 by Malinda

Math Help ASAP PLZ!!!!!
I already got the following problem wrong, so I just need help understanding HOW to get the correct answer. "In order to get a certain shade of blue paint, a mixer must have 5 parts white paint to 3 parts blue. If 4 gallons of paint must be mixed, how many gallons of ...
Thursday, December 17, 2015 by Nicole

Math
Find the equation of the line tangent to curve x=sec(t), y=tan(t), at t=pi/6. I found th slope(derivative of the two which was csc(t). Plugged in Pi/6 and got 2 as the slope. Now how do I find the equation of the tangent? There are like two equations to work with, I'm ...
Thursday, December 17, 2015 by Beth

Math
Rachel gave 1/4 of a pie to each of 5 friends how many pies did she give to her friends in all
Thursday, December 17, 2015 by Marco

Math
Suppose you know that a car company charges a base rate and charges \$2 a mile. If Joe drove 15 miles and the total cost of the rental was \$50, how much was the base cost?
Thursday, December 17, 2015 by Daisy205

8. p + 4 < –24 p < –20 p < 28 p < –28 p < 20 9.p/8 ≥ –5 p ≥ 40 p ≥ 3 p ≥ –13 p ≥ –40 10. –5p > –30 p > 6 p < 6 p > –35 p < 35 11. Which inequality matches the graph? 3x + 1...
Thursday, December 17, 2015 by Hotline Bling

math
W+X+Y
Thursday, December 17, 2015 by sjk

math
Elizabeth has 1 7/10 as many plants as rosalie has in her garden. If Elizabeth has has 51 plants, how many plants does rosalie have in her garden?
Thursday, December 17, 2015 by n

math
Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. I have no idea?
Thursday, December 17, 2015 by Katie

math help plz?
Can someone help me plz? Oh and where u see _> the line is underneath the > I just didn't know how to get it under there. Bobby hopes he will someday be more than 7 inches tall, he is currently 61 inches tall how many more inches, X, does Bobby need to grow to reach ...
Thursday, December 17, 2015 by Sadie

Math
You went to lunch with your friend and the bill is \$19.00 your lunch is \$3.00 more than your friends. How much was your friends lunch? f + 3 = 19; \$8.00 3f + 2 = 19; \$8.00 2f + 3 = 19; \$8.00 2f - 3 = 19; \$8.00 Mark weighs 74 pounds. together he and his sister weigh 6 pounds ...
Thursday, December 17, 2015 by Maci

math
In a jar there are 4 red marbles 5 green marbles and 7 blue marbles. 1 what us the probability of selecting a red marble replacing it and then selecting a blue marble 2 What is the probability of selecting a red marble setting it aside and then selecting a blue marble 3 are ...

Math GP
The 1st term of an infinite GP exceed s the 2nd term. Buy 2 and its sum is 50 find the series
Thursday, December 17, 2015 by Anonymous

Math
2. If m1=37°, what is m4? (1 point) 53° 43° 37° 27°
Thursday, December 17, 2015 by YRN DJ

Math "Need Help Asap"!
19. WorkPad Note: In questions 19-21, remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?) first appears to show your mathematical work. You can use the comments field to explain your work. Your teacher ...
Thursday, December 17, 2015 by Markest Lee

Math "Need Help Asap"!
Geometry Unit Practice Sheet Multiple Choice Use the figure to answer questions 1–3. 1. Name a pair of complementary angles. (1 point) 1 and 4 1 and 6 3 and 4 4 and 5 2. If m1=37°, what is m4? (1 point) 53° 43° 37° 27° 3. If m1 = 40°, what is m5? (...
Thursday, December 17, 2015 by Markest Lee

math
the scale model of a building is 5.4ft tall. if the original building is 810 meters tall what was the scale used to make the model
Thursday, December 17, 2015 by Anonymous

Math
Zip codes beginning with two second numbers is limited to one through five no other restrictions how many possible combinations for the zip code
Thursday, December 17, 2015 by Anonymous

Math
19. WorkPad Note: In questions 19-21, remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?) first appears to show your mathematical work. You can use the comments field to explain your work. Your teacher ...
Thursday, December 17, 2015 by YRN DJ

Math
1. Name a pair of complementary angles. (1 point) 1 and 4 1 and 6 3 and 4 4 and 5 2. If m1=37°, what is m4? (1 point) 53° 43° 37° 27° 3. If m1 = 40°, what is m5? (1 point) 50° 40° 35° 25° Use the figure to answer questions 4–5. ...
Thursday, December 17, 2015 by YRN DJ

math
In Rosa's class,there are 15 boys and 12 girls. On Wednesday,all the girls were present and 1/5 of the boys were absent. How many students were in class today
Thursday, December 17, 2015 by ela

Math
For questions 1 and 2 choose the equation or proportion that you can use to solve the problem: What number is 73% of 215? A.215 = 0.73 B.n = 0.73 × 215 C.0.73 = nx215
Thursday, December 17, 2015 by Johnny McKarron is cool

Comm Tech
1.)Marla remembers her tuesday class schedule by using the acronym Mest . Which of the following might be her class schedule? A.)Math,Social Studies, English,Technology B.)Math,English, Social Studies,Science, Technology C.)Math,English,Social Studies,Technology D.)Math,Social...
Thursday, December 17, 2015 by YRN DJ

math
the scientific notatio of velocity of light velocity of sound distance between the sun and earth
Thursday, December 17, 2015 by amulya

Math
vector a has magnitude 1 and vector b has magnitude 16m. Their scalar product is 90.0m^2. What is the magnitude of the vector product between these 2 vectors?
Thursday, December 17, 2015 by Lovelle

Math
Find the equation of the line that is perpendicular y=3/5x-4 that passes through the point (-1,3) I forgot how to do this. Please help
Thursday, December 17, 2015 by Anonymous

math
A truck driver drive 49 miles in 1 1/3 hours. What was the average speed in miles per hour for this trip? Write the answer as a mixed fraction.
Thursday, December 17, 2015 by Ty

math
According to a map, the distance between Hilltop and Valleyfloor is 1 3/4 inches. If the map uses a scale of ¼ inch to represent 1 mile, what is the actual distance in miles from Hilltop to Valleyfloor?
Thursday, December 17, 2015 by sharday

math
An object that weighs about 2.1 pounds on the moon weighed 12.56 pounds on Earth. About how much would an astronaut who weighs 174 pounds on Earth weigh on the moon?
Thursday, December 17, 2015 by sharday

Math
x=square footage of a house y=asking price in thousands of the house. x goes from 1200 square feet to 1500 square feet. the regression equation is y^= .0686x+83.24 A. what are the explanatory and response variables? B. Interpret the slope. C. Is it reasonable to interpret the ...
Thursday, December 17, 2015 by Trisha

math
Sandy asked a printing company to enlarge a drawing to 130% of its original size. If the width of the original drawing was 35 centimeters, what is the width of the copy of the drawing?
Thursday, December 17, 2015 by sharday

Math
Maddy’s loaf tin has three partitioned areas in which to bake three loaves. The outside of the tin along with the partitions is made of 80 inches of material. The area of the entire loaf tin is 192 in2. What are the possible outer dimensions of the loaf tin?
Wednesday, December 16, 2015 by Lily

math
Kim bought a total of 32 cookies. Each cookie costs \$.65, including tax. Of the cookies she bought, 3/8 were lemon cookies. What was the total cost of only the lemon cookies?
Wednesday, December 16, 2015 by sharday

Math
5+3+2+4+40·1-1/8
Wednesday, December 16, 2015 by Daniel

Math
Make the following changes to the number 2.614. The 1 is worth one tenth as much. The 4 is worth 10 times as much The 2 is worth one tenth as much Make the 6 worth 10 times as much So I'm not sdure if my answer I'd 6.241 or .6241
Wednesday, December 16, 2015 by Barbara

math
A box contains 18 marbles, 8 red, 4 green, & 6 white. What is the smallest number of marbles that must be selected to have one of each color marble?
Wednesday, December 16, 2015 by Ken

math
3(x+6)-5=16
Wednesday, December 16, 2015 by Anonymous

Math
Find an equation for the tangent to the curve y=1+ (sqrt2)(csc(X)) + cot(X). I just learned, though my teacher wasn't super good with explaining, derivatives for trig functions but they still aren't making too much sense. Could you please give me a step by step ...
Wednesday, December 16, 2015 by Cindy

Math
There is a 100 question multiple choice test each with 5 choices. You randomly guess each question. Set up the binomial probability formula to find the probability of getting exactly 80 correct out of 100. Check to see if you can use the normal approximation to binomial ...
Wednesday, December 16, 2015 by Trisha

Math
Hillside has 12 teams. Each team plays each other teams twice. How many games are played?
Wednesday, December 16, 2015 by Sandy

Math
If a bag of rice is 20 pounds and it costs \$8.92, then how much would 1 pound of rice cost?
Wednesday, December 16, 2015 by Daisy205

Math
The ski trip has to be cancelled. All 28 people must be told. In the first hour 2 people each call 2 people. The next hour each of the people called the hour before calls 2 people, and so on. How many hours will it take for all 28 people to be called?
Wednesday, December 16, 2015 by Sandy

math
how many different words can be made from the word winter without repetition
Wednesday, December 16, 2015 by Anonymous

Math
The table shows the number of miles driven over time. Time (hours)----------Distance (miles) 4---------------------232 6---------------------348 8---------------------464 10--------------------580 Express the relationship between distance and time in simplified form as a unit ...
Wednesday, December 16, 2015 by Kaai97

Math
what is the slope of the line that passes through the pair of points (-7/2, -3) and (-5, 5/2)? a. 6/22*** b. -6/22 c. 22/6 d. -22/6
Wednesday, December 16, 2015 by Kaai97

math
write a problem about going to the laundromat that has a hidden question. a single load of laundry costs \$2 and a double load costs \$4.explain how you solved your problem.
Wednesday, December 16, 2015 by Michelle

math
Find the intervals, inflection points and concavity for the following points. y=-2x^4+3x^2 I have the derivative: -24x^2+6
Wednesday, December 16, 2015 by Steffi

math
how many different words can be made from the word winter without repetition
Wednesday, December 16, 2015 by kayla

Math
1) X/4+10=14 A)96 B)46 C)16 D)-16 2) 2(2-2x)=-3x A)-4 B)4 C)6 D)0 3) 3.75x+3.7=1.7+1.75x A)10 B)-1 C)1 D).1 Answers : B C C ???
Wednesday, December 16, 2015 by Math help

Math
X/3-10=-12 A)-6 B)-66 C)6 D)66 Is it a???
Wednesday, December 16, 2015 by Help please

Math
-9x-5=-95 A) 17 B) 11 C) 10 D) -10 Is the answer c??
Wednesday, December 16, 2015 by Help please

math
12. For the right triangle in Fig. 4 find the two missing internal angles. 3x+2 5x+8 90°
Wednesday, December 16, 2015 by Anonymous

math
Two flagpoles have 20 ft. and 25 ft. shadows respectively. If the shorter flagpole is 52 ft. tall, how high is the taller flagpole?
Wednesday, December 16, 2015 by pat