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October 20, 2014

Homework Help: Math

Branches of Math

Recent Math Questions

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math
A motorboat left a harbor and traveled to an island at an average rate of 11 knots. The average speed on the return trip was 10 knots. If the total trip took 4.2 hours, how far is the harbor from the island?
Thursday, September 11, 2014 at 8:03am

math
Please solve these using the quadratic formula: 1. 3x^2-4(x-2)=0 2.a^2+2(a++5)=0 3.x^2-3(2x+3)=0 Thank you ^____^
Thursday, September 11, 2014 at 7:06am

math
What will be the answer of 4x(x-1)+5=0 when i'll use quadratic formula to solve it. Thank you ! ^___^
Thursday, September 11, 2014 at 6:01am

math
solving equation 7√(x/1-x) + 8√(1-x/x) = 15 following roots are obtained
Thursday, September 11, 2014 at 4:03am

math
solving equation 7(√x/1-x) + 8(√1-x/x) = 15 following roots are obtained
Thursday, September 11, 2014 at 3:59am

Math: pre calculus
a barn is 150 feet long and 75 feet wide. the owner has 240 ft of fencing and wants to construct two adjacent outdoor pens of identical size along the long side of the barn using the barn as one side of each pen. the owner wants the pens as large as possible. what are the ...
Thursday, September 11, 2014 at 1:53am

MATH
A HUMMINGBIRD BEATS IT WINGS 53X SEC HOW MANY TIMES DOES THE HUMMINGBIRD BEATS IN 5 SEC
Thursday, September 11, 2014 at 1:09am

8th Grade math
a student says there can only be 360 different rays emanating from a point since there are only 360 degrees in a circle. Is this true? Why or Why not?
Thursday, September 11, 2014 at 12:14am

Quantitative Reasoning (math)
Your weight on the moon is relative to your weight on Earth. Neil Armstrong weighed 360 lbs. in his moon gear while on Earth, but on the moon he only weighed 60 lbs. What is the ratio of the Earth weight to the moon weight? How much would you weigh (approximately) on the moon?
Thursday, September 11, 2014 at 12:14am

Math
Roberta is planning to buy a new car the different options she have is 1) Regular transmission or heavy duty towing transmission 2) two-door, four-door, or five-door 3)color: sleek silver, midnight black, upward grey, bold blue, or steady red In how many different ways can she...
Thursday, September 11, 2014 at 12:12am

8th grade math
Maggie claims that to make the measure of an angle greater, you just extend the rays. How do you respond?
Thursday, September 11, 2014 at 12:08am

8th grade math
Henry claims that a line segment has a finite number of points because it has two endpoints. How do you respond?
Thursday, September 11, 2014 at 12:01am

Math
if it takes 40 seconds to cut a 10-inch by 10 inch square cake into 2 inch by 2 inch pieces, how many seconds will it take to cut a 12 inch by 12 inch square cake into 2 inch by 2 inch pieces
Wednesday, September 10, 2014 at 11:34pm

Math
helen purchased three books and received a 20% discount. She will pay $10 for shipping. Write an expression that can be used to represent the total amount paid for the three books and the shipping cost.
Wednesday, September 10, 2014 at 11:20pm

math
Mega Mart collects sales tax equals to 1/16 of the retail price. Is the amount of tax collected proportional to the cost of an item before tax is added
Wednesday, September 10, 2014 at 10:50pm

Math Proof
Let S be a non-empty subset of the real numbers that is bounded below. Define −S by −S = {− x | x ∈S }. Prove: (i) −S is bounded above. (ii) sup(−S) = − inf S .
Wednesday, September 10, 2014 at 10:45pm

math
Sales tax is 1/16. What is the tax when retail price is 16.
Wednesday, September 10, 2014 at 10:37pm

Quantitative Reasoning (math)
One out of every five people who buys ice cream buy vanilla ice cream. If a store sells 125 ice cream cones in one day, about how many will be vanilla? I know how to solve the proportion once I set it up, but I cant figure out how to set it up
Wednesday, September 10, 2014 at 10:33pm

Math
2/3 of miss lina's class were boys. there were between 2 and 14 boys. One day, twin girls joined the class. Now 3/5 of the students are boys. how many students are in miss lina's class now?
Wednesday, September 10, 2014 at 10:12pm

Math
13-(8-2)=13-8- There is an empty box after the equation . Pls help I don't understand!
Wednesday, September 10, 2014 at 10:02pm

Math
Clue 1: When you divide me by 5, the remainder is 4. Clue 2: I have two digits. Both digits are odd. Clue 3: The sum of my digits is 10.
Wednesday, September 10, 2014 at 9:16pm

Physics-bobpursley Follow Up
Initial Question: A rubber ball is dropped onto a ramp that is tilted at 20 degrees. A bounding ball obeys the "law of reflection," which says that the ball leaves the surface at the same angle it approached the surface. The ball's next bounce is 3.0 m to the ...
Wednesday, September 10, 2014 at 8:56pm

math
The price of a computer fell 20% this year. If the computer now costs $550, how much did it cost last year
Wednesday, September 10, 2014 at 8:53pm

math
A = P + Prt; P (business)
Wednesday, September 10, 2014 at 8:52pm

math
v=1/3ni2h
Wednesday, September 10, 2014 at 8:52pm

math
The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 144 feet, find the width and the length
Wednesday, September 10, 2014 at 8:44pm

math
A new machine that deposits cement for a road requires 13 hours to complete a one-half mile section of road. An older machine requires 15 hours to pave the same amount of road. After depositing cement for 2 hours, the new machine develops a mechanical problem and quits working...
Wednesday, September 10, 2014 at 8:43pm

math
A jeweler wants to make a silver alloy to be used to make necklaces. How many ounces of a silver alloy that costs $3.50 per ounce should be mixed with one that costs $7.00 per ounce to make a new 30-ounce alloy that costs $6.30 per ounce
Wednesday, September 10, 2014 at 8:42pm

Math
The sum of 13 different positive whole numbers is 92. What are these numbers?
Wednesday, September 10, 2014 at 8:31pm

math
What is the worlds most musical fish? I have fractions .
Wednesday, September 10, 2014 at 8:28pm

math
9x27+2×31-28=n
Wednesday, September 10, 2014 at 8:19pm

Math
A skateboarder descends on a ramp from 172 feet to 67 feet in 15 seconds.What is average change in height per second?
Wednesday, September 10, 2014 at 8:10pm

math
The perimeter of a square piece of land is twice the perimeter of an equilateral triangle. (an equilateral triangle has three equal sides.) If one side of the square is 45 feet, find the length of the sides of the triangle. 2x + 3 = 45 2 x + 3 -3 = 45 + 2x 2x + 45 ___ __ = x 2...
Wednesday, September 10, 2014 at 8:06pm

Math
Julie can make 5 shirts in 8 days. How many days would it take her to make 15 shirts?
Wednesday, September 10, 2014 at 7:56pm

Math
For the set of ordered pairs, state the domain, range, and determine whether or not the relation represents a function. (9,9), (7,4), (1,2), (2,6), (5,0) Domain: 9,7,1,2,5 Range: 9, r, 2, 6, 0 It is a function because no x value is repeated
Wednesday, September 10, 2014 at 7:49pm

math
You are running a fuel economy study. one of the cars you find is blue. it can travel 35 1/2 miles on 1 1/4 of gasoline. Another car is red. It can travel 27 1/5 on 4/5 gallon of gasoline. What is the unit rate for miles per gallon for the blue car? what is for the red?
Wednesday, September 10, 2014 at 7:37pm

Math
How do you know which operation to choose when solving a real life problem? Can anyone help me explain this?
Wednesday, September 10, 2014 at 7:36pm

math
If bacterium divides every 20 minutes. How many will there be in a day?
Wednesday, September 10, 2014 at 7:35pm

Math
Explain how you know if a number can be divided by 10 evenly.
Wednesday, September 10, 2014 at 7:33pm

Math
How do you know which operation to choose when solving a real life problem?
Wednesday, September 10, 2014 at 7:28pm

math
convert 2 meters to centimeters 2×______=_____cm
Wednesday, September 10, 2014 at 7:17pm

math
What is the percentage of 17 out of 22
Wednesday, September 10, 2014 at 7:07pm

Math
Is this right? 0 > -2
Wednesday, September 10, 2014 at 6:56pm

Math
Enter the sum of numbers as a product of their GCF. 27 + 36 The sum of the numbers as a product of their GCF is ____ * (____ +_____).
Wednesday, September 10, 2014 at 6:48pm

math
Enter the sum of numbers as a product of their GCF. 27 + 36 The sum of the numbers as a product of their GCF is ____ * (____ +_____).
Wednesday, September 10, 2014 at 6:33pm

math
Juanita runs every seventh day and swims every fifth day. If Juanita runs and swims today, in how many days will she run and swim again on the same day? She will run and swim again in ____ days.
Wednesday, September 10, 2014 at 6:18pm

math
writing to explain explain why it is important to line up decimal numbers by their place value when you add or subtract them.
Wednesday, September 10, 2014 at 6:11pm

math
A recipe that makes 7 servings calls for cup of apple juice and cup of cranberry juice. How many cups of juice are there per serving?
Wednesday, September 10, 2014 at 6:05pm

math
Juanita runs every seventh day and swims every fifth day. If Juanita runs and swims today, in how many days will she run and swim again on the same day?
Wednesday, September 10, 2014 at 6:00pm

algebra
two students are playing a math game. the object of the game is to make the least possible number by arranging the given digits inside absolute value bars on a card. In the first round, each player will use the digits 3, 5, and 7 to fill in the card. One student arranges the ...
Wednesday, September 10, 2014 at 5:46pm

college math
if $110 is invested for one year at 13% simple interest, how much interest is earned?
Wednesday, September 10, 2014 at 4:47pm

business math
On May 1, 2004 the Jones Company received a bank statement that showed a $2,950 balance. Mr. Jones showed a $4,010 checking account balance. The bank did not return check No. 124 for $1080 and check No. 138 for $720. A $3,200 deposit made on April 30 was in transit. The bank ...
Wednesday, September 10, 2014 at 4:29pm

Math Problem (please help)
Use Hooke's Law for springs, which states that the distance a spring is stretched (or compressed) varies directly as the force on the spring. A force of 265 newtons stretches a spring 0.15 meter (see figure). (a) How far will a force of 120 newtons stretch the spring? (...
Wednesday, September 10, 2014 at 4:28pm

math
Find the unit rate. Run 400 meters in 1 min 32 s. Have no idea, please help.
Wednesday, September 10, 2014 at 4:24pm

Math
Which of the following shows a stragety to use to find 4 x 275? A- (4 x 300) + (4 x 25) B- (4 x 300) - (4 x 25) C- (4 x 275) - 100 D- (4 x 200) + 75
Wednesday, September 10, 2014 at 3:42pm

math
the sum of the ages of Sylvana’s two daughters is 60. If the older daughter is three years older than the younger daughter, and the younger daughter’s age is y, write an equation that could be used to solve this problem.
Wednesday, September 10, 2014 at 3:14pm

Math: Multiplication
Find all the factores of the product. Products: 30 45 19 40 36 22 4 26 49 32 23
Wednesday, September 10, 2014 at 2:41pm

math
if it takes 8 inches of ribbon to make a bow how many bows can be made from 3ft of ribbon will any ribbon be left over if so how much
Wednesday, September 10, 2014 at 2:40pm

Math - full question
Julia purchased a new sofa for $1300 and made a 15% down payment and financed the rest over 12 months. The store charged 11% interest on the amount financed. Find the down payment $ Find the amount financed: $ Find the interest paid: $ Find the monthly payment $
Wednesday, September 10, 2014 at 2:03pm

math
Mariano is standing at the top of a hill when he kicks a soccer ball into the air. The height of the hill is h feet, and the ball is kicked with an initial velocity of v feet per second. The height of the ball above the bottom of the hill after t seconds is given by the ...
Wednesday, September 10, 2014 at 1:17pm

Math
Solve for triangle ABC which have angle A =25.25, angle B =60.51 and a =3.82.Find c
Wednesday, September 10, 2014 at 1:02pm

math
solving equation (b-c)x² + (c-a)x + (a-b) = 0 folling roots are obtained
Wednesday, September 10, 2014 at 12:15pm

math
(please solve step by step) solving equation (6x+2)/4 + (2x²-1)/(2x²+2) = (10x-1)/4x we got roots as
Wednesday, September 10, 2014 at 12:12pm

math
the width of a rectangle is two thirds its length. if the perimeter is 180 meters find the rectangle.
Wednesday, September 10, 2014 at 11:40am

math 12
$identical\:squares\:are\:cut\:from\:eac​h\:corner\:of\:a\:rectangular\:piece\:of​\:cardboard,\:7\:cm\:by\:10\:cm.\:The\:s​ides\:are\:then\:folded\:up\:to\:make\:a​\:box\:with\:an\:open\:top.\:If\:the\:vo​lume\:of\:the\:box\:is\:25\:cubic\:centi&#...
Wednesday, September 10, 2014 at 11:37am

Math
Proportion - If a 30-foot tree cast an 18-foot shadow, find the length of the shadow cast by a 24-foot tree.
Wednesday, September 10, 2014 at 11:15am

Math
Write a word phrase for each algebraic expression. 14.1 - w z/8 - 9
Wednesday, September 10, 2014 at 10:43am

math
A gardener wants his garden to have a geometrical shape.he decides on the following rules for building the flower beds.1)They must all be rectangular. 2)The perimeter and area must be the same.How many different flower beds can the gardener make 1)if one of the side is 3 unit ...
Wednesday, September 10, 2014 at 10:17am

Math
Compare the numbers in each exercise using an inequality symbol. 5 2/3, square root 29
Wednesday, September 10, 2014 at 10:00am

Math
Write a word phrase for each algebraic expression. 14.1 - w and z/8 - 9
Wednesday, September 10, 2014 at 9:42am

math
What is the factor of x^2+8x+8 ? Thank you ! :)
Wednesday, September 10, 2014 at 8:30am

math
What is the factor of x^2+8x+8. thanks...
Wednesday, September 10, 2014 at 8:08am

math
Two cars x and y travelling side by side are subjected to constant retardations 1/2m/s and 1/6m/s.After passing a point A,they come to rest 300m before and 150m beyond a second point B.Find common velocity at A and distance AB
Wednesday, September 10, 2014 at 7:54am

Math
A yacht is moving at 10kmh in a south easterly direction and encounters a 3kmh current from the north. Find the actual speed and direction of the yacht.
Wednesday, September 10, 2014 at 5:27am

Math
if the temperature is -40 degrees fahrenheit and increases 20 degrees fahrenheit after an hour. what is the current temperature?
Wednesday, September 10, 2014 at 5:26am

math
The long-distance plan for an in-home phone costs 303.23 per month plus 2.18 per min for long-distance calls both within your state or between states, with no limit to the number of minutes of call time.
Wednesday, September 10, 2014 at 5:04am

math
rice seedlings will be planted to a 20 m x 25 m area at 20 cm x 20 cm spacing, with 2 seedlings per hill. if the area is a rectangle having 25 meter long rows what will be the resulting plant population density?
Wednesday, September 10, 2014 at 4:47am

math
Jack has $55.00 that's ten more than 1/3 of what Jill has how much does Jill have
Wednesday, September 10, 2014 at 1:32am

math
Steve, Lindsay, and Christine are the lead singers in a band. They will sing 18 songs. Lindsay will sing 8 songs. Christine will sing 6 fewer songs than Stevie. How many songs will stevie sing.
Wednesday, September 10, 2014 at 1:27am

math
Steve, Lindsay, and Christine are the lead singers in a band. They will sing 18 songs. Lindsay will sing 8 songs. Christine will sing 6 fewer songs than Stevie. How many songs will stevie sing.
Wednesday, September 10, 2014 at 1:25am

Math
(2x^3y^2z)-2/(3x^4yz^-2)^-2
Wednesday, September 10, 2014 at 12:23am

math
*This is orders of magnitude* 1)So, I have to estimate 16,700,000,000,000,000 the product of a single digit of 10. - 2 x 10^16 - 2 x 10^15 *my answer* - 1 x 10^16 - 1 x 10^15 2)0.00000394 estimated as the product of a single digit. ____ x 10____ *fill in the blanks* *my answer...
Wednesday, September 10, 2014 at 12:14am

Math Problem (please help)
State sales tax is based on retail price. An item that sells for $115.99 has a sales tax of $8.12. Find a mathematical model that gives the amount of sales tax y in terms of the retail price x. (Round the coefficient to two decimal places.) y = Use the model to find the sales ...
Wednesday, September 10, 2014 at 12:00am

Math
Simplify the expression 5(x+10)+x A. 6x+15 B. 5x+15 C. 6x+50 D. 4x-50 Is the answer B?
Tuesday, September 9, 2014 at 11:46pm

Math!!
Raymond buys bottles of water at $2.10 each and a large pizza at $12.99. The total cost was $21.39. How many bottles of water b did he buy? A. 2.10b+12.99=21.39; 4 bottles B. 2.10+12.99b=21.39; 4 bottles C. 2.10c= 21.39+12.99; 6 bottles D. 21.39-2.10b=12.99;16 My answer is A ...
Tuesday, September 9, 2014 at 11:32pm

Math!
Suppose you are driving to visit a friend in another state. You are driving 55 miles per hour. You must drive 440 miles total. If you have already driven 275 miles, how long will it take you to reach your destination? Use h to represent the number of hours it will take to ...
Tuesday, September 9, 2014 at 11:23pm

Math
This isn't very urgent but can you please break this down to me step by step? I really don't understand. I get that I'm supposed to use the order of operations but I still get lost. 2[4(9-7)+1]/3
Tuesday, September 9, 2014 at 11:15pm

Math!
9a-b-2a-10b simplify this expression A. -7a+11b B. 11a+9b C. -11a-9b D. 7a-11b Is the answer D?
Tuesday, September 9, 2014 at 11:12pm

Math Problem (please help)
The simple interest on an investment is directly proportional to the amount of the investment. By investing $4250 in a certain bond issue, you obtained an interest payment of $106.25 after 1 year. Find a mathematical model that gives the interest I for this bond issue after 1 ...
Tuesday, September 9, 2014 at 10:49pm

Math - Finding the Equation
If.... f(x) = x + 2 and g(x) = −x^2 + 2x − 3, determine - ( f ∘ g)(−2) - a formula for (g∘f)(x) My answer for ( f ∘ g)(−2) = -9 But I don't know how to get the formula for (g∘f)(x). Any help would be great.
Tuesday, September 9, 2014 at 10:46pm

Math
Write the value of the underlined digit. 37,295,810 Underline number(7) Answer: 7,000,000 496,021,795 Underline number (first 9) Answer: 90,000,000 638, 912,004 Underline number(6) Answer: 600,000,000 385,526 Underline number (second 5) Answer: 500 Write each number in word ...
Tuesday, September 9, 2014 at 10:41pm

Business Math
Portion is found by _____ the rate times the base
Tuesday, September 9, 2014 at 9:58pm

7th grade math
how do I solve for this: If 5/6 is divided by a certain fraction, a/b, the product is 1/4. What is the fraction a/b? Ans: (5/6)/(a/b) = 1/4 = do i need to divide both sides by 1/4 to get (5/6)/(1/4) = (5/6)x(4/1) = 20/6 = need to somehow get a/b by itself not sure what to do...
Tuesday, September 9, 2014 at 9:56pm

Math Problem (please help)
Find the zeros (if any) of the rational function. (If there are no zeros, enter NONE.) g(x) = (x^3-64)/(x^2+2) need help solving
Tuesday, September 9, 2014 at 9:51pm

Chemistry
Can you help me understand how to review the math definition... what "percentage" means. I need to know what the total mass of the mixture of 42 grams of apples and 96 grams of oranges. ANd what is the percentage of mass the apples are? Thank you.
Tuesday, September 9, 2014 at 9:48pm

Math
An auditorium has 30 rows of seats. It has 20 seats on the first row, 24 seats on the second row, 28 seats on the third row, and so on. 1. How many seats are there in the 20th row? 2. How many seats are there in the whole auditorium?
Tuesday, September 9, 2014 at 9:41pm

Math
1. If one wishes to accumulate a Php 30,000-fund in 5 years, how much should he deposit now at 18% compounded quarterly? 2. If a bank offers a rate of 4.5% compounded semiannually, how much should you deposit to accumulate Php 50,000 in 15 years 3. Suppose that a particular ...
Tuesday, September 9, 2014 at 9:37pm

math help
the sum of three consecutive odd integers is 435. What is the largest of the three integers??how do I solve this problem?? Please help
Tuesday, September 9, 2014 at 9:26pm

math
8 + (7)with directions please thats alll algebra
Tuesday, September 9, 2014 at 9:20pm

Business Math
Base is found by __________ the portion by the rate
Tuesday, September 9, 2014 at 9:19pm

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