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October 25, 2014

October 25, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**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*

**Math**

What is -3.702 + -9.78?
*Monday, October 6, 2014 at 7:39pm*

**math**

y^5*y^14= A. 2y^19 B. y^60 C. y^19 D. 2y^60 A? Thanks
*Monday, October 6, 2014 at 7:29pm*

**math**

solve |2n-7|=3
*Monday, October 6, 2014 at 7:26pm*

**Math**

The density of ocean water at the surface is 1025 kg per meter cubed. Write an equation to calculate the mass of 12 meters cubed of ocean water
*Monday, October 6, 2014 at 7:23pm*

**math**

rewrite in standard form f(x)=x^2 -x-6
*Monday, October 6, 2014 at 7:21pm*

**Math **

Which exponet makes the statement true? 1/5^9=5^? A. 9 B. -9 C. 1/9 D. -1/9 B?
*Monday, October 6, 2014 at 7:20pm*

**Math**

Find the point on the curve x=4y-y^2 where the tangent to the curve is a vertical line. My work: Finding the derivative. 1=4(dy/dx)-2y(dy/dx) 1=dy/dx(4-2y) dy/dx=1/4-2y Therefore, y cannot equal +2 or -2 Right?
*Monday, October 6, 2014 at 7:20pm*

**math**

At a supermarket,pineapple sells for $1 per pint(16 oz).Greg wants to buy eightin 40-oz cans of pineapple juice from the supermarket.How much does he have to pay altogeather?
*Monday, October 6, 2014 at 7:12pm*

**math**

Need help! The problem is: draw all the possible rectangles with a perimeter of 26 centimeters and whole number lengths of sides for each rectangle label the lengths of two adjacent sides. Dot array homework sheet. Thanks!
*Monday, October 6, 2014 at 7:01pm*

**Math**

without solving, describe two ways to show that 2, -1, 3, and -2 are the roots of the polynomial equation x^2-2x^3-7x^2+8x+12=0.
*Monday, October 6, 2014 at 6:55pm*

**Math **

Find the coordinatesof the point on the curve xy=10 in the first quadrant such that the normal line passes through the orgin. My work: Okay i believe this is an inverse variation. Therefore, y=10/x? Origin is @ (0,0) and i'm stuck to move on...
*Monday, October 6, 2014 at 6:50pm*

**Math**

Solve by factoring x^3-4x^2-3x+18=0
*Monday, October 6, 2014 at 6:47pm*

**Math**

Jane makes necklaces .she uses one pendant for each necklace.there are 6pendants and 10 ribbons in a pack.what is the least number of necklaces jane can make without having any ribbons or pendants left over
*Monday, October 6, 2014 at 6:44pm*

**math**

88+11
*Monday, October 6, 2014 at 6:39pm*

**Math**

DVD cases are 9/16 inch wide.. If Juan has 60 DVDs how many will fit on one shelf. Shelves are 2 1/2 ft long.
*Monday, October 6, 2014 at 5:53pm*

**Math**

Jane makes necklaces .she uses one pendant for each necklace.there are 6pendants and 10 ribbons in a pack.what is the least number of necklaces jane can make without having any ribbons or pendants left over
*Monday, October 6, 2014 at 5:44pm*

**Math**

Determine the real roots of the polynomial equation: (x^2+1)(x-4)=0
*Monday, October 6, 2014 at 5:18pm*

**Math (Ms.Sue)**

How do you write an example of a part to whole ratio?
*Monday, October 6, 2014 at 4:55pm*

**math**

what pattern can you use to multiply a number and 9 if you know 10 times the number? give an example. 9x10=90
*Monday, October 6, 2014 at 4:49pm*

**Math- Ms. Sue.. anyone!**

Which expressions could complete this equation so that it has one solution? 4(4x - 3) - 6x *There are two answers* 12x - 12 -2x ** 9x - 12 4x + 2(3x - 6) 4(2x + 3) - 24 ** Marie has $830 in her bank account and withdraws $60 each month. Denise has $970 in her bank account and ...
*Monday, October 6, 2014 at 4:41pm*

**math geometry**

Given a circle with an 8" radius, find the area of the smaller segment whose chord is 8" long? I don't even understand how to start a question like this?
*Monday, October 6, 2014 at 4:35pm*

**Math**

Which expressions could complete this equation so that it has one solution? 4(4x - 3) - 6x *There are two answers* 12x - 12 -2x ** 9x - 12 4x + 2(3x - 6) 4(2x + 3) - 24 ** Marie has $830 in her bank account and withdraws $60 each month. Denise has $970 in her bank account and ...
*Monday, October 6, 2014 at 4:24pm*

**Math**

Write an example of a part to whole ratio.
*Monday, October 6, 2014 at 4:13pm*

**Math**

Jackie has a bag of marbles. In her bag, there are 25 red marbles and 30 blue marbles. What is the ratio of blue marbles to red marbles, in simplest form? What kind of ratio is this?
*Monday, October 6, 2014 at 4:10pm*

**Math**

Assume that f is a continuous function from the real numbers to the real numbers such that for all numbers x,y, and a it is true that f(x+y)=f(x) + f(y) and that f(ax)=af(x). Further assume that f(1) = pi. Find f'(-1). Please explain your reasoning. I am so confused. Ive ...
*Monday, October 6, 2014 at 4:08pm*

**Math**

Considering the word Mathematics, what is the ratio of vowels to consonants? Write this ratio 3 ways: Word form: Fraction form: Colon form:
*Monday, October 6, 2014 at 4:08pm*

**Math**

explain three ways to find the area of the rectangle at the right. Use the ways to find the area using 7,3,2,5
*Monday, October 6, 2014 at 4:05pm*

**Math- AP Calc **

If 3x+xy+4y=8, what is the value of d^2y/dx^2 at the point (1,1)? My work: 3+(x)(dy/dx)+(y)+4(dy/dx)=0 dy/dx(x+4)=-3-y dy/dx=-3-y/x+4 2nd Dervative: (x+4)(0-dy/dx)-(-3-y)/(x+4)^2 (x+4)(-(-y-3/x+4))-(-3-y)/(x+4)^2 (x+4)(y+3)/(-x+4)+(y+3)/(x+4)^2 *Mult. everything by (-x+4) ...
*Monday, October 6, 2014 at 3:56pm*

**Math**

If 3x+xy+4y=8, what is the value of d^2y/dx^2 at the point (1,1)? My work: 3+(x)(dy/dx)+(y)+4(dy/dx)=0 dy/dx(x+4)=-3-y dy/dx=-3-y/x+4 2nd Dervative: (x+4)(0-dy/dx)-(-3-y)/(x+4)^2 (x+4)(-(-y-3/x+4))-(-3-y)/(x+4)^2 (x+4)(y+3)/(-x+4)+(y+3)/(x+4)^2 *Mult. everything by (-x+4) ...
*Monday, October 6, 2014 at 3:54pm*

**Math Proof**

0<=b_n<=a_n. a) if a_n-->0 then b_n-->0. b) if a_n-->infinity then b_n-->infinity I don't know where to start.
*Monday, October 6, 2014 at 3:49pm*

**math**

mrs.mcdermott is giving 6 students 3 piecies of candy.how many piecies did she give to all students?
*Monday, October 6, 2014 at 3:44pm*

**Math**

Is 4 +- square root 12 i the same as 4 +- i square root 12?
*Monday, October 6, 2014 at 3:24pm*

**math **

what is your burger wrapping friends hourly wage after taxes if he works 9 hours a day, 4 days a week, and gets paid every 2 weeks? his paycheck is $591.12 after taxes.
*Monday, October 6, 2014 at 2:57pm*

**math**

Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes and Steven lifted 15 boxes. The boxes that Nathan lifted each weighed 12 lb more than the boxes Steven lifted. Which expression represents the total number of pounds Nathan lifted? Let s represent the weight of...
*Monday, October 6, 2014 at 2:56pm*

**math**

Find the volume of a can of soup that has a height of 16 cm and a radius of 5 cm. Use 3.14 for pi. A. 1,256.0 cm3 B. 251.2 cm3 C. 4,019.2 cm3 D. 502.4 cm3 im lost
*Monday, October 6, 2014 at 2:51pm*

**math**

Alice took out a $15,000 loan for college. She is borrowing money from two banks. Bank A charges an interest rate of 6%, and Bank B charges an interest rate of 7%. After one year, Alice owes $960 in interest. How much money did she borrow from Bank A?
*Monday, October 6, 2014 at 2:28pm*

**math**

Classify the triangle with sides of length 6 inches, 8 inches, and 3 inches. A. equilateral B. isosceles C. straight D. scalene I know its not A but I really don't know answer
*Monday, October 6, 2014 at 2:17pm*

**Math**

A surveyor sights the top of a building with a handheld range finder. The top of the building is 72 feet 10 inches away. The angle of elevation is 57º. Find the distance from the surveyor to the building to the nearest foot.
*Monday, October 6, 2014 at 2:16pm*

**Math**

Charlie is late for the hot-air balloon rally. He stops his car 65 meters from a hot-air balloon already in flight. While Charlie watches the balloon ascend, he tilts his eyes up from 28º until he is watching at an angle of elevation of 66º. Find the vertical ...
*Monday, October 6, 2014 at 1:52pm*

**math**

A study shows that 6% of household appliances fail during any given year. If a person has 6 household appliances, what is the probability that exactly 2 of them will fail next year? (9/2)*.06^2*.94^7 this is how I worked it but it was wrong can you tell me where I went wrong ...
*Monday, October 6, 2014 at 1:51pm*

**Math**

Mr. Box lives on the fourth floor of a building and looks out of his window 46 feet above the sidewalk. A cat on the sidewalk below hears the window open and looks up at an angle of elevation of 75º. How far is the cat in feet from the edge of the building? (Enter only ...
*Monday, October 6, 2014 at 1:17pm*

**math**

Solve the proportion for u. (u−2) : (u+3) = 4 : 3
*Monday, October 6, 2014 at 11:56am*

**math**

Riding on a school bus are 20 students in 9th grade, 10 in 10th grade, 9 in 11th grade, and 7 in 12th grade. Approximately what percentage of the students on the bus are in 9th grade?
*Monday, October 6, 2014 at 11:52am*

**Math, ASAP Please**

If you place $1,000.00 in a savings account with an interest rate of 5.25/month, how much should you earn in interest at the end of the month?
*Monday, October 6, 2014 at 11:46am*

**math**

Why is 5 to the negative 4 power= 1/5 to the fourth power?
*Monday, October 6, 2014 at 10:32am*

**Math Gr 12**

State the x and y intercepts for each function below. Show all of your work. 1 y= ---- + 3 x-2
*Monday, October 6, 2014 at 9:02am*

**7th grade math**

Can you check me answer? Mrs. Acosta's car can travel an average of 24miles on each gallon of gasoline. Write and solve an equaltion to find how many gallons of gasoline she will need for a trip of 348 miles. Ans: 348 = 24g 348/24 = g 14.5 = g. She will need 14.5 gallons ...
*Monday, October 6, 2014 at 8:13am*

**math**

A theater contains 441 seats and the ticket prices for a recent play were $45 for adults and $21 for children. if the total proceeds were 13,797 for a sold out matinee, how many of each type of ticket were sold?.
*Monday, October 6, 2014 at 2:34am*

**Math**

write an example of a part to whole ratio.
*Sunday, October 5, 2014 at 11:55pm*

**Math**

Considering the word Mathematics, what is the ratio of vowels to consonants? Write the ratio 3 ways. word form: colon form: fraction form:
*Sunday, October 5, 2014 at 11:51pm*

**Math**

A movie poster shows King Kong towering over an adult human. On the poster, King Kong measures 42cm, while the human measures 5 cm. How tall is King Kong supposed to be, to the nearest foot?
*Sunday, October 5, 2014 at 11:44pm*

**Math**

Farmer Jane has only pigs and chickens on her farm. She can't remember how many of each she has but she does know she counted 110 legs and 35 heads. Assuming that each animal is normal, how may of each animal does she have?
*Sunday, October 5, 2014 at 10:54pm*

**Math**

let s(t)= t^4-4t^3+8t for 0 ≤ t ≤ 4 find the total distance traveled by the object. find where the acceleration is positive.
*Sunday, October 5, 2014 at 10:35pm*

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