Friday
October 31, 2014

Homework Help: Math

Branches of Math

Recent Math Questions

Post a New Question | Current Questions

math help
Given f(x) = x 10. What is f(7) i think its -10
Wednesday, October 8, 2014 at 10:36am

math
The perimeter of a rectangle is 90 cm. Its width is half its length. Which equation could be solved to find the dimensions of the rectangle?
Wednesday, October 8, 2014 at 10:18am

math
25 – 5x = 80
Wednesday, October 8, 2014 at 10:18am

math (need check answer)
You are buying balloons for a party. A small balloon cost $3. A large balloon cost $4. Write an algebraic expression for the cost of x small balloons and y large balloons. Then find the total cost for 14 small balloons and 8 large balloons. Q1: An algebraic expression for the ...
Wednesday, October 8, 2014 at 9:43am

Math
What can you multiply an expression by to eliminate the imaginary part of the denominator? 1.) (2+4i)/3i= 2.) (1-2i)/2i=
Wednesday, October 8, 2014 at 9:30am

math
In how many ways can four aces be drawn from a deck of cards? (Order is not important.)
Wednesday, October 8, 2014 at 2:39am

math
In how many ways can a full house of three jacks and a pair of twos be obtained from an ordinary deck of cards?
Wednesday, October 8, 2014 at 2:38am

Math
1. Find the common ratio and 9th term of the sequence 6, -3, 3/2, -3/4, ..... 2. Find the 7th term of the sequence: 2, 6, 18, 54, ..... 3. Find the 11th term of the sequence 1, -1/2, 1/4, -1/8, .....
Wednesday, October 8, 2014 at 2:17am

Math
What is the answer to the equation 85.3 - 23.58 = ?
Wednesday, October 8, 2014 at 12:56am

math
if A 52 card deck of playing cards is shuffled, and one card is dealt from the top of the deck. What is the probability that it is a red ten? 52 cards in a standard deck. 13 Diamonds 13 Hearts all RED. Then have 13 Spades and 13 Clubs, all BLACK so 26 red cards total and 26 ...
Wednesday, October 8, 2014 at 12:39am

math
if a house is worth 85,000 what is is value in a year at 5%
Wednesday, October 8, 2014 at 12:02am

math
math estamate 56,225 divided by 48
Tuesday, October 7, 2014 at 11:50pm

Math
1. Find the 11th term of the geometric sequence 64, -32, 16, -8, … . 2. Find the 1st term of a geometric sequence with a 10th term -1024 and r = -2. 3. Find the sum of each infinite geometric series, if possible. a. 10 + 2 + 2/5 + ..... b. 1.2 – 2.4 + 4.8 – 9.6...
Tuesday, October 7, 2014 at 11:21pm

Math
1. A teacher teaches 8 students how to fold an origami model. Each of these students goes on to teach 8 students of their own how to fold the same model. If this teaching process goes on for 6 generations, how many people total will know how to fold the origami model? 2. By ...
Tuesday, October 7, 2014 at 10:35pm

Math
An airplane flys at a constant altitude of 2 miles and a constant speed of 600 miles per hour on a straight course that will take it directly over a kangaroo on the ground. How fast is the angle of elevation of the kangaroo's line of sight increasing when the distance from...
Tuesday, October 7, 2014 at 10:33pm

algebra 2
Graph the system of constraints and find the value of x and y that maximize the objective function. Constraints {x >= 0 y >= 0 y <= 3 y <= -x+5} Objective Function C=-5x+3y a) 0,0 b) 2,3 c) 5,0 d) 0,3 I am a mom going crazy. I did horrible in math in school. ...
Tuesday, October 7, 2014 at 10:07pm

7th grade math
Not really sure what to do for this problem. this was how it was worded on worksheet. Larue scored 10 points less than 3 times the number of points that Ross scored. Larue scored 11 points. How many points did Ross score?
Tuesday, October 7, 2014 at 9:52pm

Math
What is the sum of decimals? 0.28 + 0.62 = Write to explain how you found your answer.
Tuesday, October 7, 2014 at 9:51pm

Math
1.) If a = 2 and the vertex of a parabola is (3, -4), will there be a minimum or maximum value for the parabola? What is the value? 2.) If a = 2 and the vertex of a parabola is (3, -4), what is its axis of symmetry?
Tuesday, October 7, 2014 at 9:45pm

math
A solution contains 100 mg/mL of a drug, and the recommended dose is 50 mg/lb once a day. How much solution would be needed for one dose to be administered to a 20kg patient?'
Tuesday, October 7, 2014 at 9:42pm

Math
Carter got the following scores on Science tests: 78,82,88,90,93. What is the mean deviation?
Tuesday, October 7, 2014 at 9:35pm

Math
1. Find the value of k so that 2, k^2, 8 form a geometric sequence. 2. Water is leaking from a water tower. On the first day, two gallons were lost. The leak is getting progressively worse and the amount of water lost triples each day. How many gallons would be lost on the 8th...
Tuesday, October 7, 2014 at 9:33pm

Math
1. Find the common ratio and the 7th term of the sequence 2/9, 2/3, 2, 6, 18, ..... 2. The 3rd and 5th terms of a geometric sequence are 2 and 1/2 respectively. What is the first term? 3. Find the geometric mean between: a. 1/2 and 1/3 b. sqrt5 - sqrt2
Tuesday, October 7, 2014 at 9:31pm

Math
A bag contains 8 green marbles and 4 blue marbles. If two marbles are drawn in succession without replacing them in the bag, what is the probability of drawing a green marble on the second draw?
Tuesday, October 7, 2014 at 9:28pm

math
If a student scored an average of 60% on a test, what score would he/she need to average it out to a passing 80+. What formula would you use. This isn't a question on a test, it's one I've been trying to find. I am able to retake a test multiple times and will ...
Tuesday, October 7, 2014 at 9:24pm

Math
The ages in years of the houses on Kelly's block are: 20,26,11,2,28,18,2,27. Find the mean, median and the mode. Mean: 16.6 Median: 18.20 Mode: 2 Which measures should I use to represent the ages of the houses? Explain.
Tuesday, October 7, 2014 at 9:00pm

MATH
A boat on a river travels 16 miles downstream in only 2 hours. It takes the same boat 7 hours to travel 28 miles upstream. What are the speed of the boat and the speed of the current?
Tuesday, October 7, 2014 at 8:52pm

Math
in a rectangle the measures of the base and the altitude are in a ratio of 1:4. I f the rectangle is equal in area to a square with a perimeter of 60 feet, find the dimensions of the rectangle HELP PLEASE TYSM!!
Tuesday, October 7, 2014 at 8:44pm

7th grade math
Can you check my answers please. 1. Joe and his friends at 3/8 of pie. If the pie was cut into 8 pieces, how many pieces are left? Ans: 8/8 - 3/8 = 5/8 pieces left 2. Michaela walked 2/5 miles to the store in 1/4 hour. What's her walking pace? Ans: (2/5)/(1/4) = (2/5)*(4/1...
Tuesday, October 7, 2014 at 8:36pm

7th grade math word problems
While scuba diving Quentin descended 2 1/3 feet each second for 30 seconds. If Quentin ended up at a depth of -234 feet before he began his descent, what was his original depth? Do I multiply 2 1/3ft by 30 seconds?
Tuesday, October 7, 2014 at 8:24pm

Math radical equations
Please show me how to do these step by step because I have a test tomorow and I need to understand how to do these questions : 1. M-1 under the square root sign +5= m-2 2. 3n+10 under the square root = n+4 3. K-9 under the square root - (k under square root )=-1 4. 2h-5 under ...
Tuesday, October 7, 2014 at 8:17pm

Math! Please check!
Consider the statement: If two whole numbers are even, then their sum is odd. What assumption should be made to prove the statement indirectly? A- The numbers are equal. B- The numbers are not equal. C- Their sum is not odd. D- Their difference is even. My choice is C.
Tuesday, October 7, 2014 at 7:51pm

Math
Luke walks 1 3/4 miles each way to school. Tuesday before he realized he left his lunch at home and had to go back to get his lunch. How many miles did luke walk on wednesday to and from school? A: 3 1/2 B: 4 C: 4 1/2 D: 2 3/4 I dont understand tis one. what do i do to solve ...
Tuesday, October 7, 2014 at 7:50pm

Math! Please check!
What is the hypothesis of the conditional statement? If you are not there, then I will leave. A-you are there B- you are not there C- I will leave D- I will not leave My choice is B. What is the converse of the conditional statement? If it is Tuesday, then I walk to the park. ...
Tuesday, October 7, 2014 at 7:46pm

Math
What is amount of money on $40,500 with 6.2 interest rate for a year
Tuesday, October 7, 2014 at 7:39pm

Math
For the most recent year available, the mean annual cost to attend a private university in the United States was $20,082. Assume the distribution of annual costs follows the normal probability distribution and the standard deviation is $4,500. Ninety-five percent of all ...
Tuesday, October 7, 2014 at 7:38pm

math
A jar contains 120 pennies. A bigger jar contains 1 1/4 times ss many pennies. What is the value of the pennies in the jar?
Tuesday, October 7, 2014 at 7:33pm

math(fractions)
6/5 times 15/4 =90/20 but i cant figure out what the answer is on my answer sheet i have to simplfly. please help thanks you ms.sue and brady .
Tuesday, October 7, 2014 at 7:33pm

Math! Please check!
Which statement best describes inductive reasoning? A- It uses previously proven or accepted properties to reach a conclusion. B- It uses observation of patterns and past events to reach a conclusion. C- It uses any convenient method to reach a conclusion. My choice is B. ...
Tuesday, October 7, 2014 at 7:16pm

math
Carla Compra borrowed $800 at 14% for one year. She paid a $15 processing fee. The interest paid will be $. Thus, the total finance charge (the interest plus the processing fee) will be $ Therefore, to the nearest tenth, the APR = total finance charge ÷ amount borrowed...
Tuesday, October 7, 2014 at 7:15pm

math
grace made 6 out of 10 shots at the basket ball game. what percentage of shots did she make?
Tuesday, October 7, 2014 at 7:02pm

math
Evaluate: -3/4 - 1 3/8 A: - 17/8 B: -1 C: 17/8 D: -5/8 I put C but its was incorrect. I'm to sure what the correct answer would then be. can you show me how to solve it and how to achieve the correct answer?
Tuesday, October 7, 2014 at 6:56pm

Math
a truck can be rented from company a for 100 a day plus 0.60 per mile and company b charges 50 a day plus 0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and b are the same. Please answer in miles
Tuesday, October 7, 2014 at 6:52pm

math help
What are the domain and range of the relation {(4, 2), (0, 1), (0, 5), (8, 10)}?
Tuesday, October 7, 2014 at 6:49pm

Math
Having a lot of trouble with this one: Q) Tidal volume is the volume of air displaced in the lungs between inhalation and exhalation (the amount of air in a breath). The residual volume is given by the remaining in the lungs even after the deepest exhalation (ie the minimum ...
Tuesday, October 7, 2014 at 6:48pm

math(fractions)
what is 9/10 times 25/6.i got 225/60 but its not on my answer sheet.i need to simplify. It's not on my answer sheet. please help. its a puzzle.
Tuesday, October 7, 2014 at 6:47pm

Math
A submarine begins at -125 below sea level. If the submarine travels at 20 feet per minute, how many minutes would it will take the submarine to rise to the surface and then defend to -104 feet? A: 6 1/4 B: 11 2/9 C: 5 1/5 D: 11 9/20 I said C but it was wrong. how do i solve ...
Tuesday, October 7, 2014 at 6:43pm

Math
At noon, a hot air balloon was at an elevation of 2,400 feet. One hour later it was at an elevation of 1,400 feet. A: write an expression you can use to find the altitude from noon to one. B: solve the expression. i am not sure what to do on this.
Tuesday, October 7, 2014 at 6:31pm

math/physics
A 0.600-kg ball traveling 4.00 m/s to the right collides with a 1.00-kg ball traveling 5.00 m/s to the left. After the collision, the lighter ball is traveling 7.25 m/s to the left. What is the velocity of the heavier ball after the collision?
Tuesday, October 7, 2014 at 6:25pm

MATH
THE AMOUNT OF CLOTH USED TO MAKE FOUR CURTAINS IS GIVEN BY THE FUNCTION A=-4X^2 + 40X WHERE X IS THE WIDTH OF ONE CURTAIN IN FEET AND a IS THE TOTAL AREA IN SQUARE FEET. FIND THE WIDTH THAT MAXIMIZES THE AREA OF THE CURTAINS. WHAT IS THE MAXIMUM AREA?
Tuesday, October 7, 2014 at 6:06pm

math
writing to explain write a story problem using ten $100 bills,nine$10 bills,and twenty $1 bills.
Tuesday, October 7, 2014 at 5:42pm

Math
A piece of wood is 8 and 7/8 in. long is cut a piece 45 1/2 in. long. If 1/16 is wasted for the cut, how much wood is left.
Tuesday, October 7, 2014 at 5:38pm

math
a fish tank that holds 80 gallons of water is 55 percent full how many gallons are in the tank now and how many more gallons are needed to fill the tank
Tuesday, October 7, 2014 at 5:34pm

Math
How to find the slope of a STRAIGHT Line
Tuesday, October 7, 2014 at 5:32pm

Math
How do you find the slope of a line? And how can you tell which point is x or which one is y
Tuesday, October 7, 2014 at 5:30pm

math
A band played 3 concerts and earned a total of $321.00. The band earned about the same amount for each concert. Estimate how muchthe band earned each night.
Tuesday, October 7, 2014 at 5:28pm

math
When Kaitlin divided a fraction by 1/2,the result was a mixed number.Was the original fraction less than or greater than 1/2? Explain your reasoning
Tuesday, October 7, 2014 at 5:10pm

Math
leslie is in charge of packing snacks for her class. she has 30 cookies and 20 apples. she wants to put the same number of cookies and the same number of apples in each pack. what are the possible numbers of packs she can make? how many items are in each bag?
Tuesday, October 7, 2014 at 5:02pm

Math
A projectile is shot upward from the earth with an initial velocity of 320 ft/sec. (a) What is the velocity after 5 secs.? ft/sec. (b) What is the acceleration after 3 secs.? ft/sec^2.
Tuesday, October 7, 2014 at 5:02pm

Math
For this problem, a person standing on the edge of a cliff throws a rock directly upward. it is observed that 2 secs later the rock is at its maximum height (in feet) and that 5 secs after that (meaning 7 seconds after being thrown) the rock hits the ground at the base of the ...
Tuesday, October 7, 2014 at 5:00pm

Math
If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 80 ft/sec, its height after t seconds is s(t) = 48+80t-16t^2 What is the velocity of the ball when it hits the ground?
Tuesday, October 7, 2014 at 4:50pm

Math
Is 0.600 kg lighter than 1.00kg?
Tuesday, October 7, 2014 at 4:29pm

Math
How does estimating help you add two digit numbers
Tuesday, October 7, 2014 at 4:19pm

math
John tosses a penny 10 times and finds that 2 of those times the penny comes up heads and 8 of those times the penny comes up tail. What should John conclude? a.That the expected relative frequency probability of getting heads when tossing a penny is 2/10. b. That it is more ...
Tuesday, October 7, 2014 at 4:10pm

Math
Does 1.645 round to 1.65?
Tuesday, October 7, 2014 at 4:05pm

Math
The New York State Lottery advertises that for its instant lottery games there is a 4 in 21 chance of winning. If you buy only 1 instant lottery card, what is the chance you will win? I think the answer is 4/21 but am not sure.
Tuesday, October 7, 2014 at 4:04pm

math
a 20 metre length of cloth is cut into two pieces in the ratio 1:9. how long is each piece?
Tuesday, October 7, 2014 at 3:15pm

MATH
Solve the following equations for x where 0 ≤ x < 2π. tan(x)sin(2x) = √3 sin (x) and cos(2x)−cos(x) = −sin2(x)+1/4  Stuck on these particular types. Have no idea how to start.
Tuesday, October 7, 2014 at 3:15pm

math
find the sum of 2 1/2 and 2/5 which of the following makes the statement true? 1/5^0 the area of a certain state is 840,000 square miles. what is this area in scientific notation? which is irrational? A. 0.11711711711... B. o.8596873205... C. 0.812812812812... D. 0....
Tuesday, October 7, 2014 at 2:37pm

math
A 12-foot tree casts a 22-foot shadow. Find the angle of elevation from the tip of the shadow to the top of the tree. Round the answer to the nearest tenth.
Tuesday, October 7, 2014 at 2:18pm

Math
What is -3.702 + -9.78?
Tuesday, October 7, 2014 at 1:58pm

Math
A ball that is hit or thrown horizontally ball that is hit or thrown horizontally with a velocity of v metres per second will travel a distance d metres before hitting the ground, where d=v square root h/ 4.9 and h is the height, in metres, from which the ball is hit or thrown...
Tuesday, October 7, 2014 at 1:46pm

Math
If I spoke to someone for 60 minutes and then spoke to them again for 41 minutes, would that mean I spoke to them for 1 hour 41 minutes? 60+41=101 minutes?
Tuesday, October 7, 2014 at 11:58am

math
Jonah wants to buy two copies of a book. Which algebraic expression could Jonah use to find the value of the items?
Tuesday, October 7, 2014 at 10:43am

Math
Eleanor and Max used two rectangular wooden boards to make a set for the school play. 1 board was 6 ft long, the other was 5 1/2 ft long. The 2 boards had equal widths. The total area of the set was 60 3/8 square ft. What was the width?
Tuesday, October 7, 2014 at 7:48am

math
234 X 323
Tuesday, October 7, 2014 at 4:26am

Math
If the area of the ceiling is 129 square feet with one side measuring 10 3/4 how much trim does we need for the ceiling
Tuesday, October 7, 2014 at 4:04am

math
calculate, to 1 decimal place, the amount of fencing you would need to enclose a square garden that is 42m squared
Tuesday, October 7, 2014 at 12:29am

math
calculate, to one decimal place, the amount of fencing you would need to enclose a square garden of 6m squared
Tuesday, October 7, 2014 at 12:28am

math
there are 6 rows with 18 chairs in each row. in the center of the chairs, 4 rows of 6 chairs are brown. the rest of the chairs are blue. how many chairs are blue?
Monday, October 6, 2014 at 11:13pm

Math Question
f(x)=-5√-4x+4+2. Find the inverse of this function.
Monday, October 6, 2014 at 10:25pm

math
eva wants to make two pieces of pottery. She needs 3/5 pound of clay for one piece and 7/10 pound of clay for the other piece. She has three bags of clay that weigh 4/5 pound a piece. How many bags of clay will eva need? How many pounds of clay will she have left over?
Monday, October 6, 2014 at 10:25pm

Math
You have a 5/16 in. drill bit. Will it drill a hole large enough to fit a 5 mm bolt? Show two different ways to answer this question. Explain your thinking. I couldn't even figure out the first way. Please help!
Monday, October 6, 2014 at 10:24pm

Math
The height of a pop can is 15 cm and its shadow is 20 cm long. A carton of milk next to the can is 0.25 m tall. Determine the length of the carton's shadow, to one tenth of a centimeter. I did 100cm*0.25... but the answer is 33.3cm How did they get that?
Monday, October 6, 2014 at 9:32pm

Math
When Synthetically dividing to find a real root out of all Possible Roots, what must the remainder be in order to prove that the PR is an actual root? A.1 B. 0 C.-1 D.Sq root of 1 E. i My answer is B. 0. Am I correct?
Monday, October 6, 2014 at 9:31pm

Math
If a flew flew an estimated distance of 800 kilometers what is the greatest distance the plan could have flown
Monday, October 6, 2014 at 9:02pm

Math
A family size pizza is 24$ and costs 3 times as much as a small pizza. How much does the small pizza cost?
Monday, October 6, 2014 at 8:52pm

Math
Forty members of a group are making candles. One member drops out and the rest have to make three more candles each to make up. Each member makes the same number of candles. How many candles do they make altogether.
Monday, October 6, 2014 at 8:49pm

math
an office manager is renting a local hall for un upcoming event. The hall costs $200. The food costs $14 per person. The office manager is not sure how many people will attend. Which quantity is not a variable quantity - the cost to rent the hall, the number of people who will...
Monday, October 6, 2014 at 8:40pm

Math
Marla and her mom cooked 21.3 liters of spaghetti sauce. They used 18 jars of the same size to can it. About how much did each jar hold?
Monday, October 6, 2014 at 8:31pm

MATH
We now have d dx [x5 + y8] = 5x4 + 8y7y' = d dx [9] = 0. Rearranging this, we get 8y7y' = ?????????? ------------------------------------- A table of values for f, g, f ', and g' is given. x f(x) g(x) f '(x) g'(x) 1 3 2 4 6 2 1 8 5 7 3 7 2 7 9 (a) If h(...
Monday, October 6, 2014 at 8:18pm

math.
Sally had saved 5 quarters from washing cars. How many cents does Sally have? // Sam has saved one thousand nine hundred cents from selling lemonade. How many dollars does Sam have?
Monday, October 6, 2014 at 8:16pm

math
Valerie and Bret have a total of 24 dog show ribbons.Bret has twice as many ribbons as Valerie.How many ribbons does each have?
Monday, October 6, 2014 at 8:07pm

Math
Melanie has 84 muffins, which he needs to box up, 9 of which are blueberry, into dozens. How many boxes does she need?
Monday, October 6, 2014 at 8:01pm

math
5^5/5^2 A. 5^1 B. 5^2 C. 5^3 D. 5^4 Is the answer B? Thanks a bunch
Monday, October 6, 2014 at 8:00pm

Math
Tim has forty five books. Jason has forty two times more books than Tim. How many books does Jason have?
Monday, October 6, 2014 at 7:56pm

Math
I'm trying to solve this without using the gcf. 23/525. X 63/92
Monday, October 6, 2014 at 7:50pm

math 1 question
A student measures a rectangular room to be 20.0m x 17.16m. Which of the numbers below represents the room's area with the correct number of significant figures? 340m^2 343m^2 343.2m^2 343.20m^2 the correct answer is c but it says sig fig so is it b??? im having trouble ...
Monday, October 6, 2014 at 7:46pm

math
w^12/w^18 A. w^30*** B. w^-30 C. w^6 D. w^-6 A?
Monday, October 6, 2014 at 7:44pm

math
what pattern can you use to multiply a number and 9 if you know 10 times the number? give an example.
Monday, October 6, 2014 at 7:43pm

Pages: <<Prev | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | Next>>

Post a New Question | Current Questions

Search
Members