Friday
July 31, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

Math 222
How do I use substitution to solve the system? Please help Addition and equal key is not working -5x plus 2y equal 16 y equal 2x plus 7
Monday, April 27, 2015 by Tika

6th Grade Math Inequalities
The maximum weight allowed on The Wildcat ride is 221 pounds. Your friend weighs 60 pounds. To be able to ride in a car together, how much can you weigh? Write and solve an inequality. Is this the correct answer?: x + 60 ¡Ü 221; at most 161 pounds? Please answer ...
Monday, April 27, 2015 by MusicLover14

Math
If sin 0 = -3 / 5 and pi < 0 < 3pi / 2, then tan 0 = ? F. -5 / 4 G. -3 / 4 H. -3 / 5 J. 3 / 4 K. 4 / 5
Monday, April 27, 2015 by Anonymous

Math 222
Please help me with inequalities?\ 2x-1>-3 and 4x plus 5>-19 I tried doing this problem, but I am lost.
Monday, April 27, 2015 by Tika

MATH
Abby, Betty, Cassie, and Dale need to cross the river on a boat. The boat only fits at most two people. If two people go over one must bring it back for the others. Abby takes 1 min., Betty 2 min., Cassie takes 5 min., and Dale takes 10 min.. The time it takes is based on the ...
Monday, April 27, 2015 by Chris

Math 222
Please help me solve this problem? The first mechanic worked 10 hours and the second mechanic worked 5 hours. Together they both charged a total of $1250 for their work. Their sum of two rates is $165 per hour. So how much did the first and second mechanics charged?
Monday, April 27, 2015 by Maryann

Math 222
Please help me solve this system of equations? Sorry addition/equal key is not working. -2x plus 9y equal 3 -3x-4y equal 22
Monday, April 27, 2015 by Tika

Math 222
Please help me with this problem The sum of two numbers is 47, the smaller number is 23 less than the larger number. What are the two numbers?
Monday, April 27, 2015 by Maryann

math
X|-2|0|2|4| Y|-4|0|4|8| Do the values in the table represent a linear function? If so what is the function rule? A. The values do not show a linear function. B. Yes, the values show a linear function; y=1/2x+4. C. Yes,the values show a linear function; y=2x+2. D. Yes, the ...
Monday, April 27, 2015 by callie

math
a red rosebush has three times as many brooms as a punk rosebush. together they have 48 blooms . which of the following is the number of blooms on the red bush?
Monday, April 27, 2015 by junior

Business Math
mr. mike invested two sums of money on simple interest. the fist was $2200 invested at 8% per annum and the second $1960 at 10% per annum. the sums were allowed to frow till bothe amounted to the same figure. in how many years did this happaended and what was the final amount?
Monday, April 27, 2015 by Zubair

math
Write a function rule for finding the amount of daily pay, p in the following situation; A bus driver gets paid $100 each day plus $0.20 per kilometer, k. A.100=0.20 x k B. p=0.20x100 x k C. p= 0.20k+100 D. 0.20k=100+p Is the answer B??
Monday, April 27, 2015 by sad with math

Math
Solve each equation to the nearest tenth and use the given restrictions. sin θ = -0.204 for 90 degrees < θ < 270 degrees. I don't get this. Is this supposed to be restricted to quadrants 2 and 3? Then it doesn't seem possible to get a value that will be...
Sunday, April 26, 2015 by Anonymous

math
Street | Horizontal | Vertical rise Distance ft. |of street ft. _______|_____________|_______________ Dixie hill| 80. | 40 Bell hill | 80. | 20 Liberty hill| 80. | 60 Which hill is the steepest? Explain. A. Bell hill; it rises one foot for for every 4 feet of horizontal travel...
Sunday, April 26, 2015 by sad with math

Math
If the scale on a drawing of a house is 1 cm=2 1/2m, what is the length of the house if it measures 3 cm on the scale drawing?
Sunday, April 26, 2015 by Kayla

Math
Victoria tossed a coin 30 times and got 17 heads. What is the ratio of heads to coin tosses? What is the ratio of heads to tails? What is the ratio of tails to heads? If victoria tosses the coin 150 times, how many times can she expect to get heads?
Sunday, April 26, 2015 by Kayla

math
With the coordinates of (2,10)(4,20)(6,30) on a graph first numbers being the number of sub's on the x axis, and the second number being the cost of the sub's on the y axis. What is the slope-intercept equation for the cost of a sub at Fred's Sub Shop? A.y=2x B.y=...
Sunday, April 26, 2015 by blue day

Math
Each human hand has 27 bones. There are 6 more bones in the fingers than in the wrist. There are 3 fewer bones in the palm than in the wrist. How many bones are in each part of the wrist?
Sunday, April 26, 2015 by Sierra

math
please help me with this one too! : if it costs about $0.10 per week to feed a snake, how much does it cost to feed 35 snakes for 4 wks?
Sunday, April 26, 2015 by Anonymous

Math
If it costs an average of $14 each day to feed each of the 1058 zoo animals, what is the annual cost for feeding all the animals?
Sunday, April 26, 2015 by Anonymous

math
Why does Zara have a good driving record?
Sunday, April 26, 2015 by scott

math
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= 5x D. 5x+2 Is the answer C??
Sunday, April 26, 2015 by blue day

Math
the antelopes eat 15 kg of corn, 14 kg of horse feed, and 100 kg of hay per day. how many kilograms of food are eaten per week?
Sunday, April 26, 2015 by Student

math
If the length of each dimension of the rectangular prism is cut in half, then surface area will be 1/4 of the original surface area. true or false
Sunday, April 26, 2015 by Anonymous

Math
write the equation y+3=1/3x in general form.
Sunday, April 26, 2015 by Anonymous

math
Raymond has four more sisters than Tyler.Write a number sentence to show Raymond=r tyler=t
Sunday, April 26, 2015 by jeff

math
2 numbers have a product of 7, and a difference of 28, what are the 2 numbers?
Sunday, April 26, 2015 by Dam

math
Given the position function, s of t equals t cubed divided by 3 minus 12 times t squared divided by 2 plus 36 times t, between t = 0 and t = 15, where s is given in feet and t is measured in seconds, find the interval in seconds where the particle is moving to the right.
Sunday, April 26, 2015 by ana

Math 222
The sum of two numbers is 47. The smaller number is 23 less than the larger number. What are the numbers?
Sunday, April 26, 2015 by Tika

math
Graph the linear function y=-2x+3 How do I work this out?
Sunday, April 26, 2015 by sad with math

Math
Surface area of each solid .round to THE nearest tenth if necesaria. 6cm 5.2cm 7cm 6c
Sunday, April 26, 2015 by Raul

Math
Marks worth is A 1 B 2 C 2 Please explain next to it though how you got that answer and what to write to get that mark. Clearly explain as I have no clue, don't leave anything out though! Information needed to solve There is an isosceles triangle with corners A, B and C. ...
Sunday, April 26, 2015 by Todayneededplz

math
The side length of a rectangular box with a square base is increasing at the rate of 2 ft/sec, while the height is decreasing at the rate of 2 ft/sec. At what rate is the volume of the box changing when the side length is 10 ft and the height is 12 ft? Remember to use the ...
Sunday, April 26, 2015 by ana

Math 222
Please help me solve for m? F equal mv^2/r solve for m.
Sunday, April 26, 2015 by Tika

Math
Please help me write this as a single fraction? Sorry my addition/equal key does not work - 3a-7b/2a plus 5a-4b/3a plus 3.
Sunday, April 26, 2015 by Tika

Math 222
Please someone help me simplify this problem. My addition/plus key is not working. x-3/x^2 plus 5x plus 6 divided by x plus 1/4x plus 8
Sunday, April 26, 2015 by Tika

Math
Angie has a scarf that measured 36.5 inches long. Her sister made a scarf 4.66 inches shorter. How long was her Austen's scarf?
Sunday, April 26, 2015 by Jaiden

Business Math Please Help me
A monopoly has a total cost function C = 1000 + 108x + 12x^2 for its product, which has demand function p = 324 − 3x − 2x^2. Find the consumer's surplus at the point where the monopoly has maximum profit. (Round your answer to the nearest cent.) Thank You!
Sunday, April 26, 2015 by Scarlett

math
how do I find the max number of 1.7 inch diameter spheres that can be stored in a cylindrical tank the tank has a radius of 2 inches and height of 4 inches there are 2 inches of water in the tank
Sunday, April 26, 2015 by emily

math
if you know the area of a square how do you find the length of the square?
Sunday, April 26, 2015 by Alice

Math
Solve each equation for 0 <_ 0<_ 2Pi(3.14) i) 18sin^20 +3cos0 - 17 = 0
Sunday, April 26, 2015 by Lily Chang

math
Tess’ commission is increased according to how much she sells. She receives a commission of 6% for the first $5000 and 12% on the amount over $5000. What is the total commission on sales of $12,000?
Sunday, April 26, 2015 by joshua

math
King Arthur II has problems with pronouncing the digit 3. People are afraid of presenting something which includes 3 in it. The solution found is that if any number includes 3 as a digit, the number is divided by 2. This process continues as far as the new numbers include new ...
Sunday, April 26, 2015 by ani

math
Show that 8x^3 + 12x + 100logx=O(x^3).
Sunday, April 26, 2015 by ani

math
If the intensity of a lightbulb is 45w/m^2 at a distance of 8m, then what is the intensity of it at a distance of 3m?
Sunday, April 26, 2015 by Ashley

math
A company is designing a juice box. The box is in the shape of a rectangular prism. The base of the box is 6 1/2 inches by 2 1/2 inches, and th box is 4 inches high. If juice fills 90% of the box's volume, find the volume of juice in the box. Thank you!
Sunday, April 26, 2015 by kymy

math
This question says to graph the linear function.y=1\3x-4. What would the graph look like? Thank you Reiny but they put me in this class and I can not figure out what to do. When I am for help they are always to busy to help me my mom when talked with the principal and she don...
Sunday, April 26, 2015 by blue

math
A college is planning to construct a retangular parking lot on land bordered on one side by a highway. The plan is to use 680 feet of fencing to fence off the other three sides. What dimensions should the lot have if the enclosed area is to be a maximum?
Sunday, April 26, 2015 by ddot

Math
The plane P1 has equation r = (2,1,1)+lambda(-2,1,8)+mu(1,-3,-9) The plane P2 has equation r = (2,0,1)+s(1,2,1)+t(1,1,1) Show that for points that lie on P1 and P2, lambda=mu I have no idea how to start... help! Thanks!
Saturday, April 25, 2015 by jay

math
The data in the table are linear. Use the table to find the slope. X| 2| 4| 6| 8 Y| 1|-2|-5|-8 A. 3/2 B. -3/2 C. -2/3 D. 2/3 Please help me work this out I don't know how to do this kind of stuff. Thank you in advance.
Saturday, April 25, 2015 by blue

Math
Solve each equation for 0<_ 0<_ 2pi(3.14) E) 18sin^2(0) + 3cos0 -17 =0
Saturday, April 25, 2015 by Miu Lily

Math
You want to find out what the favorite hot lunch in the school cafeteria is among the high school students. At an assembly for the whole school, you decide to survey all students who are sitting on the end of their rows in the auditorium. What type of survey are you conducting...
Saturday, April 25, 2015 by Steve

Math
in order to find out what the best restaurant is in town you call 25 of your friends at random. what type of survey is this? a- biased b-random c-systematic d-stratified my answer is biased because you may pick at random but they are all still your friends.
Saturday, April 25, 2015 by Steve

Math
What is the 1st quartile of the following data set? 2745,257,301,218,265242,201 a-201 b-218 c-257 d-270 my answer would be 28 because 201 would be the minimum.
Saturday, April 25, 2015 by Steve

math
The Sugar Sweet Company will choose from two companies to transport its sugar to market. The first company charges $ 4696 to rent trucks plus an additional fee of $ 225.50 for each ton of sugar. The second company charges $ 5500 to rent trucks plus an additional fee of $ 175....
Saturday, April 25, 2015 by Bobby

math
Solve each equation for 0<_ 0<_ 2pi(3.14) A) 2cos^20 - sin0 -1=0
Saturday, April 25, 2015 by Miu

math
Can someone please explain this problem Find the general solution to the linear system of differential equations. x'1 x'2 x'3 = −4 −4 5 0 −4 4 0 4 2 x1 x2 x3
Saturday, April 25, 2015 by Anonymous

geometry
I sent question about rt triangle, ABC, needing to find a & b. altitude was 4, base a and hypotenuse b. You mentioned knowing another angle. There is one < A is 45 degrees. Thanks for all your help. Math is not an easy subject for me.
Saturday, April 25, 2015 by robin

math
The length of a rectangular piece of cardboard is three more than twice the width. A square 2 cm on a side is cut out of each corner. The sides are folded up to form an open box. if the volume of the box is 120cm^3, what were the original dimensions of the cardboard.
Saturday, April 25, 2015 by Cat

Math
Determine the simple interest p=6742.75,6.05%, t=90 days
Saturday, April 25, 2015 by Melanie

math
The ratio of number of $5 notes to the number of $10 notes that Ryan has was 4:3. After Ryan spent $140 worth of 5$ notes and 2/5 of $10 notes, the ratio became 2:3. What was the value of the $5 notes Ryan had at first?
Saturday, April 25, 2015 by valaen

math
Solve each equation for 0<_ 0<_ 2pi(3.14) a) 2tan^20 = 3tan0 - 1
Saturday, April 25, 2015 by Gina

math geography and business studies
what can i study in university
Saturday, April 25, 2015 by tapiwa

Math
1. cos theta = 0.2 for 270 degrees <= theta <= 360 degrees. Ans: 78.5 degs? 2. sin theta = 0.95 for -90 degrees <= theta <= 90 degrees. Ans: 71.8 degs?
Saturday, April 25, 2015 by Anonymous

math
Find the slope in the graph with the coordinates -3x,3 and 1,-5 A.2 B.-1/2 C.-2 D.1/2 Is the answer A??? Thanks in advance.
Friday, April 24, 2015 by pink

Math 222
How do I write this problem as a single fraction? Sorry my addition button doesn't work. 2x plus 7y 2x plus 5y ____________ - ____________ plus 2 8x 2x
Friday, April 24, 2015 by Tika

Math 222
How do I write this problem as a single fraction? Sorry my addition button doesn't work. 2x plus 7y 2x plus 5y ____________ - ____________ plus 2 8x 2x
Friday, April 24, 2015 by Tika

Math
. If Kerry fills the tank with 10 in. of water, how much water is in the tank? How much of the tank is empty?
Friday, April 24, 2015 by Anonymous

Math
. If Kerry fills the tank with 10 in. of water, how much water is in the tank? How much of the tank is empty?
Friday, April 24, 2015 by hi

Math 222
want to make sure that I am using my vocabulary words correctly to explain my answer for this problem. Thank You!!! ). This Quadratic formula needs to be factored -x^2 + 3 x + 5 = 0 x^2 - 3 x - 5 = 0 x = [ +3 +/- sqrt(9 + 20) ] / 2 The discriminant 1.5 +/- 2.69
Friday, April 24, 2015 by Tika

Math, Statistics
Find two z-scores so that 40% of the data in the distribution lies between them. (More than one answer is possible). Include a sketch of the distribution with 40% of the area shaded and the corresponding z-scores included. I'm not sure how to do this problem. Just need a ...
Friday, April 24, 2015 by Lita

MATH
HELP !!! Which statistics concept is described? Choose from these answers: [(A):statistical test] [(B):Null Hypothesis] [(C):alpha] [(D):one-tailed test] [(E):two-tailed test] [(F):Type I error] [(G):Type II error] [(H):the statistic Z] 1)When a hypothesis is that two groups ...
Friday, April 24, 2015 by Anonymous

Math
Use the graph below to answer the following question. 1. Find the slope. (1 point) 2 – –2 Use the graph below to answer the following question. 2. Find the slope of the line. Describe how one variable changes in relation to the other. (1 point) 2; distance increases ...
Friday, April 24, 2015 by Andrew

Math, Psychology
Can anyone tell me what should be the answer to this question? What term is being described: Choose from these answers: (A)Central Limit Theorem (B)Normal distribution (C)Standard Error (D)Z-score (E)Transformation rules 1) If you keep taking more and more samples, the average...
Friday, April 24, 2015 by Anonymous

Math
Simplify 8C5- I have no Idea how to solve this, if someone could help? The choices are: A. 6,720 B. 336 C. 56*? D. 10
Friday, April 24, 2015 by Anon2

MATH
Can anyone help me with this question.? What term is being described? Choose from these answers: (A)Central Limit Theorem (B)Normal distribution (C)Standard Error (D)Z-score (E)Transformation rules 1 If you keep taking more and more samples, the average of the samples' ...
Friday, April 24, 2015 by Anonymous

Math
I need help with sequences 2,1,1/2,1/4,... Is this arithmetic, geometric,neither, or both (geometric?) 7,9,11,13 arithmetic, geometric,neither, or both. (arithmetic?) 1,2,4,8... Whats the rule think the rule is: Start with one and multiply by two repeatedly 50,40,30,20 Rule ...
Friday, April 24, 2015 by Amber

Math
Can anyone help me with this question.? What term is being described? Choose from these answers: (A)Central Limit Theorem (B)Normal distribution (C)Standard Error (D)Z-score (E)Transformation rules 1 If you keep taking more and more samples, the average of the samples' ...
Friday, April 24, 2015 by Anonymous

MATH
Can anyone help me with this question.? What term is being described? Choose from these answers: (A)Central Limit Theorem (B)Normal distribution (C)Standard Error (D)Z-score (E)Transformation rules
Friday, April 24, 2015 by Anonymous

Math
Can anyone help me with this question. What's the best answer? Choose from these answers: [(A):variance] [(B):standard deviation] [(C):sample mean] [(D):s-squared] [(E):unbiased estimate] 1.subtract the mean of all the scores from each score, then square that number and ...
Friday, April 24, 2015 by Anonymous

Math 222
Please help me make sure that I am using my vocabulary words correctly to explain the problem. Thank you!!! 8). The Quadratic Formula a^2 - 6 a + 9 = 0 Then I completed the square-------(a-3)(a-3) = 0 a = 3 or a = 3, in other words the vertex is on the x axis
Friday, April 24, 2015 by Tika

Math 222
I want to make sure that I am using my vocabulary words correctly to explain my answer for this problem. Thank You!!! ). This Quadratic formula needs to be factored -x^2 + 3 x + 5 = 0 x^2 - 3 x - 5 = 0 x = [ +3 +/- sqrt(9 + 20) ] / 2 The discriminant 1.5 +/- 2.69
Friday, April 24, 2015 by Tika

Math
1.You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why? (1 point) experimental; the result is based on the number of possible outcomes experimental; the result is found by repeating an experiment ...
Friday, April 24, 2015 by Anon

math
A gneral having formed his soldiers numbering 15400,into a solider square,found he had 24 men left over,how many soliders did the front row?(hint.15400-24)
Friday, April 24, 2015 by Hijab

Math
After polling a class of 20 music students by a show of hands, you find that 8 students play the guitar and 9 students play the piano. Given that information, what is the minimum number of students in this music class who play both the guitar and the piano? F. 0 G. 1 H. 8 J. 9...
Friday, April 24, 2015 by Anonymous

Math
Milan must choose a number between 55 and 101 that is a multiple of 6 , 9 , and 18
Friday, April 24, 2015 by Sammy

Math
What is the midpoint of the line segment whose endpoints are (-8, 12) and (-13, -2)?
Friday, April 24, 2015 by Brad

DISCRETE MATH
HOW CAN YOU USE DISCRETE PROBABILITY TO CALCULATE THE PROBABILITY OF TESTING 5 DEVICES SUCH THAT ALL 5 END UP BEING NONDEFECTIVE, GIVEN THERE ARE 20 DEFECTIVE DEVICES TOTAL OF THE ORIGINAL 100 DEVICES? WHAT IS THE SAMPLE SPACE?
Friday, April 24, 2015 by MARAL

Math
Joan needs to buy water to fill 4 empty cylindrical tanks for use by customers in her hotel. Each is 20 feet deep and has radius of 5 feet. What is the volume of water needed?
Friday, April 24, 2015 by Bridgette

Math
Diane is putting money into a checking account. Let represent the total amount of money in the account (in dollars). Let represent the number of weeks Diane has been adding money. Suppose that x and y are related by the equation 30x+450=y . Answer the questions below. What is ...
Friday, April 24, 2015 by Tia

6th Grade Math Help Please
Hi, I need help because I'm really stuck on this math word. Can someone please define what rational coordinates means what? I really need help fast because this project is due today! Thank You :)
Friday, April 24, 2015 by MusicLover14

math
The 9th term of an arithmetic sequence is 12 and the 17th term is 28, find the 4th term of the arithmetic sequences
Friday, April 24, 2015 by Lillian

Math
Find the number of distinguishable permutations of the following letters: M, I, S, S, I, S, S, I, P, P, I.
Friday, April 24, 2015 by Hailey

math
4 red,4 white,4 blue at random take out 2 , say 1 red 1 white do not replace. what is probarbility of now picking a)blue b)red c)white so red=1/12 or 1/4 white=1/12 or 1/4 now only 10 left red 3/10,white3/10, blue 4/10
Friday, April 24, 2015 by steve

Math help?
I am kind of stuck on this one Each of two urns contains green balls and red balls. Urn I contains 10 green balls and 8 red balls. Urn II contains 3 green balls and 10 red balls. If a ball is drawn from each urn, what is P(red and red)? (a) 23/18 (b) 10/27 (c) 40/117 (d) 18/31...
Thursday, April 23, 2015 by plz

Math
Hi! Can someone check my answers? Thanks!! Directions: Tell whether the following questions are either permutations or combinations. 1.) Number of ways the Junior class can elect a committee of officers - President, Vice President, Secretary and Treasurer. (my answer: ...
Thursday, April 23, 2015 by Callie

Math
Find the slope of a line that is parallel to the line ontaining the points (3, 4) and 2, 6) A. m= 2 B. m= -2 C. m= -1/2 D. m= -1 I say it's C Please check
Thursday, April 23, 2015 by Kel. Last post, please check

math
Sofia has a plate that has 4 sides of equal length, 2 pairs of opposite sides that are parallel, and no right angles. What quadrilateral best describes the plate.
Thursday, April 23, 2015 by Melody Dickson

math
A picture on the wall in Jeremy's classroom has 4 right angles, 4 sides of equal length, and 2 pairs of opposite sides that are parallel. What quadrilateral best describes the picture?
Thursday, April 23, 2015 by Melody Dickson

Math
Find the slope of a line that is parallel to the line ontaining the points (3, 4) and 2, 6) A. m= 2 B. m= -2 C. m= -1/2 D. m= -1 I say it's C or A Please check
Thursday, April 23, 2015 by Kel

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