Saturday
June 25, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

math
18. For the function f(x) = x2 ­ -12, find (f o f­-1)(4). A)4 B)10 C)6 D)0 help please?
Tuesday, May 10, 2016 by emily

math
How come half the questions posted in here don't even get answered?
Tuesday, May 10, 2016 by janice

math
How come a lot of the questions posted in here don't get answered?
Tuesday, May 10, 2016 by barbra

Math
There are six true-false questions on a quiz. Not knowing any of the answers, a student guesses randomly. Find the probability of each event. Exactly two answers are correct. Exactly six answers are correct. At least five are correct. At least three answers are correct.
Tuesday, May 10, 2016 by Jen

math
10z-4+8(z-1)
Tuesday, May 10, 2016 by larren

Math
Ali has 13 pencils.Jamal has 9 pencils. How many fewer?
Tuesday, May 10, 2016 by Lamar

math
How many outcomes are there at the ice cream shop if you have five choices of ice cream and 6 choices of toppings and 2 choices of syrup?
Tuesday, May 10, 2016 by karlez

Math
6[8 8 9 7[2 5 5 5 8 8 8 9 8[2 2 2 6 6 9 9 9[0 0 0 2 2 5 5 5 Key: 8[2 means 82 How many students scored 78? 1 student 2 students 3 students 4 students
Tuesday, May 10, 2016 by LOVE

math
What is the diff. Between parabola and ellipse
Tuesday, May 10, 2016 by Anonymous

MATH HELP PLEASE
1.-3f^2+4f-3+8f^2+7f+1 a.5f^2-11f+2 b.11f^2+11f+2*** c.5f^2+11f-2 d.-5f+3f-2 2.3x^2+5X-5X^2-4X-2 a.-8x^2-9x+3 b.2x^2+x+3 c.-2x^2-9x+3 d.-2x^2+x+3*** 3.(8x-2y)+(3x-4y) a.11x+8y*** b.4x-y c.11x-6y d.5x+2y 4.(y+3d)-(-9y+7d) a.-10y+4d b.-8y+10d c.8y-6d*** d.10y-4d 5.the distance ...
Tuesday, May 10, 2016 by Connexus

Math Please Help
What is the probability of getting an even number when rolling a six-sided number cube? 0.5** 5% 2/6 30% You place the letters for the word smart in a bag. What is the probability of choosing a letter that is NOT a vowel? (remember vowels A, E, I, O, and U.) 0.2 1/5** 80% 0.75...
Tuesday, May 10, 2016 by #Blessed

Math
4x^2(2x^3 – 5x +6)
Tuesday, May 10, 2016 by Natalie

Math
Please explain how to do this 6[8 8 9 7[2 5 5 5 8 8 8 9 8[2 2 2 6 6 9 9 9[0 0 0 2 2 5 5 5 Key: 8[2 means 82 How many students scored 78? 1 student 2 students 3 students 4 students
Tuesday, May 10, 2016 by LOVE

Math
Write and simplify the polynomial represented by the model. (Model shows: 3 big blank squares, 2 long black rectangles, 3 small blank squares, 1 big black square, 6 small black squares) a. -2x^2 + 2x + 3 b. 2x^2 - 2x - 3 c. 3x^2 - 2x - 3 d. 2x^2 - 2x + 3
Tuesday, May 10, 2016 by jj

math
if the family income is $18.600 per year , what are the amount to be spend for each item per week ?
Tuesday, May 10, 2016 by Annette roy

Math (please help)
Maria wants to cover the box shown below with paper.Which of the following could be the dimensions of the paper so that Maria has enough to cover the box, including the ends, with a little left over? Shape: Rectangular Prism Length:8 in Width: 2 in Height: 2 in A) 8 in x 4 in ...
Tuesday, May 10, 2016 by Samantha

Math
Hi could you please check my answers? Find the lateral of the square pyramid (I don't have a picture so I'll describe the figure) the square base is 8m around each side of the square and the slant height is 22m, my answer is 352 cm^2. Am I correct? Plz and thx Find the...
Tuesday, May 10, 2016 by Anonymous :D

math
Hi, i would like to know how would i write a standard form equation of each ellipse vertices : (-6,18),(-6,-8) foci: (-6,5+ sq root 165),(-6,5-sq root 165)
Tuesday, May 10, 2016 by marlene

math
Tory and Emilio's motorboats travel at the same speed. Tory pilots her boat 40 km before docking. Emilio continues for another 4 hr, traveling a total of 90 km before docking. How long did it take Tory to navigate the 40 km?
Tuesday, May 10, 2016 by lauren

Math
Between 1am and 3am the temperature fell by 9C. Over the next hour, the temperature rose by 2C, Reaching -3C by 4am. What was the temperature at 1am?
Tuesday, May 10, 2016 by Anonymous

Math
Renu wants to lay tiles on the floor of her house which is 9m long and 7m wide among the following sizes of tiles which one should she buy so that the floor is tiled without cutting any tiles
Tuesday, May 10, 2016 by Bharti

Math
What is the value of the function y=-3x+8 when x=6?
Tuesday, May 10, 2016 by Tina

math
karen has 60 percent as much as money as leslie. leslie's sum of money is 60 %mof matthews. if matthews gives karen 140, matthew will have the same money as leslie. how much do they have altogether
Tuesday, May 10, 2016 by harry

math
florence bought two bags of flour, A and B. the two bags contained different amounts of flour. the total mass was 108 kg. Gary poured 1/4 of the flour from bag A to bag B. After that, he poured 2/5 flour from bag B to bag A. he found that the both bags had the same mass now. ...
Tuesday, May 10, 2016 by alex

math: probability
How many 13 card hands can be made from a deck of 52 cards?
Tuesday, May 10, 2016 by Please check my answer

Math - Normal and Binomial Distribution
An unbiased dice is thrown 10 times. Let X be the number of sixes obtained. Find: C) P(X<mean) The correct answer is .485, but I don't know how to get there. I tried
Tuesday, May 10, 2016 by Simon

math: probability
You have 52 cards. 12 of the cards are the face cards and 4 of the cards are the Aces. What is the probability of getting a face card and then an Ace? my answer: P(Face card) *P(ACE) 12/52 * 4/52 = 3/169
Monday, May 9, 2016 by Please check my answer

math
Identify this probability as independent or dependent A bag contains ten cards numbered 1 through 10. You pick one card and then another without replacement. What is the probability that both cards display a value of 6 or higher? My answer: Dependent
Monday, May 9, 2016 by Please check my answer

Math
-5+x/-3=28
Monday, May 9, 2016 by Destiny

Math
sixty-four is four tenths of what number?
Monday, May 9, 2016 by Kim

Math
In 35 minutes, 49 customers entered the store. At this rate, how many customers will enter the store in 2 hrs?
Monday, May 9, 2016 by Sandy

math
a picture with 4 right angles 4 sides an 2 pairs opposite what quadrilateral is this
Monday, May 9, 2016 by chloe

math
find the equation of the family of hyperbolas where foci are (~4, 6) & (4, 0). Find the member of the family that passes through (2, 0)
Monday, May 9, 2016 by keith

Math
In a piggy bank Jane has 8 more quarters than dimes and she has 5 less nickels than dimes. Write an algebraic expression
Monday, May 9, 2016 by Math

math
The perimeter of the fence is 70feet and the width is 16feet.What is the length of the fence.
Monday, May 9, 2016 by Isaiah

math
come on
Monday, May 9, 2016 by sckid30

Math
Katherine earned 84,92,84,74, and 70 on her first five test. What is the minimum grade Katherine needs to earn on the next test to have a mean of 84 ?
Monday, May 9, 2016 by Denise

math
If my teacher grades a test of 54 questions and I get 18 wrong what will be my grade?
Monday, May 9, 2016 by adeline

math
jesse drive 6 3/8 miles in a golf cart during a round of golf. Payton drives 7 3/4 miles . how much father dose payton drives
Monday, May 9, 2016 by sckid30

Math
There are 8 slices of pizza. Joey ate 2 slices. Chris ate 3. What is the fraction of the pizza they ate.
Monday, May 9, 2016 by Bella

Math Help please!
11. A basket contains the following pieces of fruit: three apples to oranges two pairs two bananas and five peaches. Jack pics of fruit at random and does not replace it then, Bethany pics of fruit at random. what is the probability that Jack gets a peach and Bethany gets an ...
Monday, May 9, 2016 by Jack

Math
Which quadratic rule represents the data in the table? X : -1 | 0 | 1 | 2 | 3 Y: 4 | 5 | 4 | 1 | -4 Y = -2x^2 + 5 Y = -x^2 + 5 Y = -x^2 - 5 Y = x^2 + 5 My answer is Y = -x^2 - 5
Monday, May 9, 2016 by Cam

Math
There are 8 slices of pizza. Joey aye 2 slices and cChris ate 3 slices what is the fraction of the pizza they ate together
Monday, May 9, 2016 by Jadea

help my son's math
Dan baked enough peach pies for each of his 20 friends to have 1/8 of a pie. How many pies did he bake.
Monday, May 9, 2016 by Kevin

math
A jar of gumballs contains 10 blue gumballs, 20 green gumballs, 15 yellow gumballs, and 25 pink gumballs. You reach into the jar and randomly select a gumball, then select another while replacing the first gumball back. What is the probability that you draw a green gumball as ...
Monday, May 9, 2016 by Please check my answer

math
A jar of gumballs contains 10 blue gumballs, 20 green gumballs, 15 yellow gumballs, and 25 pink gumballs. You reach into the jar and randomly select a gumball, then select another while replacing the first gumball back. What is the probability that you draw a green gumball as ...
Monday, May 9, 2016 by Anonymous

Math
a sports reportor said that 2 out of every 3 people at a home town base ball game named baseball vs their favorite sport the reporter claimed that baseball was the mostpopular sport in town which of th following explains why the reporters might not be true
Monday, May 9, 2016 by kaden

Math
In a piggy bank Jane has 8 more quarters than dimes and she has 5 less nickels than dimes. Write an algebraic expression
Monday, May 9, 2016 by Math

Math
The Dig It Project is designing two gardens that have the same perimeter. One garden is a trapezoid whose nonparallel sides are equal. The other is a quadrilateral. Two possible designs are shown at the right. a. Based on these designs, is there more than one value for x? ...
Monday, May 9, 2016 by Meow

math
Hi, I need help:<[], 2/3 x 6 and 3/5 = 2/3(6 + 3/5)= 2/3 x 6 + 2/3 x 3/5 = 1 + 6/16, Please change that to a mixed number I'm going crazy AHHHHHHHHHH.............:()
Monday, May 9, 2016 by Pier

MATH
A TREE AND A FLAGPOLE ARE IN THE SAME GROUND.A BIRD ON TOP OF THE TREE OBSERVERS THE TOP AND BOTTOM OF THE FLAGPOLE BELOW IT AT ANGLES OF 46 AND 60 DEGREES RESPECTIVELY. IF THE TREE IS 10.65m HIGH WHAT IS THE HEIGHT OF THE FLAGPOLE
Monday, May 9, 2016 by SILVER

Math statistics
What is the probability of randomly selecting a female from the 25 and 35 years old
Monday, May 9, 2016 by Anonymous

Math
5p-7-2p=-3
Monday, May 9, 2016 by Tiffany

math
zack is planning to make a flower garden he has 24 one yard sections of fence that he plans to place around garden he wants the garden to be aas long as possible what longest length he can use for the garden how wide will the garden be is this area prerimeter or side length
Monday, May 9, 2016 by aron

math
Which statement concerning the equation x^2+2=x is true? Its discriminant is 0 , so it has no solution. Its discriminant is 0 , so it has one real solution. Its discriminant is -7, so it has two complex solutions. Its discriminant is -7, so its solutions are negative.
Monday, May 9, 2016 by Claire

Math- exponent laws
Use a calculator to determine the value to 3 decimal places. 7^0.4
Monday, May 9, 2016 by Anonymous

math
A flying disc has a radius of 6 inches. What is the area of one side of the flying disc to the nearest square inch? Use 3.14 as an approximation for pi. A) 113 square inches B)452 square inches C)38 square inches D) 28 square inches
Monday, May 9, 2016 by Claire

Math
Determine to 3 decimal places. (Please explain as you go, thank you) 7^0.4
Monday, May 9, 2016 by Kennedy

math
Prove that sinA+sinB+sinC=-4cosA/2cosB/2cosC/2
Monday, May 9, 2016 by jacent

math,science
A car traveling at 22 m/s starts to decelerate steadily. It comes to a complete stop in 13 seconds. What is its acceleration?
Monday, May 9, 2016 by Ally

Math
Determine to 3 decimal places. 7^0.4 (please explain as you go, thank you)
Monday, May 9, 2016 by Kennedy

math
this graph below shows the number of new cleants brought into sunnydays insurance company
Monday, May 9, 2016 by denishamartin

Math
Yesterday kate and her cousin robert went out for a movie there they spent $50 in total robert spent $10 more than kate how much did kate spend?
Monday, May 9, 2016 by Emily

Math
Can you guys give me a example not a link please As part of their job, meteorologists make weather predictions from data. How accurate are their predictions? What are other scenarios in which you would use data to make a prediction? How would you defend your prediction using data
Monday, May 9, 2016 by Sid.V

math
give:m is the midpoint of Ab,P is the midpoint of BC and N is the midpoint of AC :prove that AMPN is paralleiogram
Monday, May 9, 2016 by alson

math
Raina is saving money to buy a game. So far she has saved $16 , which is one-fourth of the total cost of the game. How much does the game cost?
Monday, May 9, 2016 by anna

Math (Trig) lowering powers
If cos^4(3x)-sin^4(3x)=cos(g(x)) then g(x)=? Use a^4-b^4=(a^2-b^2)(a^2+b^2)! thanks in advance for any help!
Monday, May 9, 2016 by Giovanni

math
5(x-1)+-3x+6=9
Monday, May 9, 2016 by larren

Math Help!!
The time between a lighting flash and the following thunderclap may be used to estimate, in kilometers, how far away the storm is. How far away is the storm if 12 seconds elapse between the lighting and the thunderclap? a) 4 kilometers b) 5 kilometers c) 15 kilometers d) 36 ...
Monday, May 9, 2016 by Val

math
-6t+3(t-2)+5t=8
Monday, May 9, 2016 by nicole

math
A simple random sample is drawn from a normally distributed population. The value of which of the following will not be known for certain but can be inferred?
Monday, May 9, 2016 by ashley

math
Two events are independent if the first event has no effect on the second event. Two events are dependent if the result of one event has an effect on the other event. One of the most common examples of these are situations involving picking 2 items from a group of items. If ...
Monday, May 9, 2016 by Anonymous

Math
A 7 sided polygon has 6 interior angles of 125 degrees. Find the remaining interior angle
Monday, May 9, 2016 by Sj

math
May anyone give me an example of a independent and an dependent probability word problem about food?
Monday, May 9, 2016 by Anonymous

Math
What repeating decimal is equal to 4? I think it is 3.999 Am I Wrong? Help Please
Monday, May 9, 2016 by Gisselle

math
A number cube is rolled and a marble is selected from a bag. There are 2 reds, 2 yellows, 2 greens, 1 blue, and 1 purple marble in the bag. Find the probability of the following: roll a 1 and pick a red marble.
Monday, May 9, 2016 by Anonymous

Help Math
A graph of the sequence f(n)=2n-3 and a graph of the function f(x)=2x-3 are both shown What accounts for the differences between the graphs in terms of range? i know only the difference of the domain but i have no idea the difference of the range can someone please help
Monday, May 9, 2016 by Edgar

math
To ensure that you do not have a total consumption budget, which two categories should be added to your budget? A. savings and checking B. savings and miscellaneous C. savings and vacation D. vacation and miscellaneous
Monday, May 9, 2016 by crossfire

math
I asked this yesterday and didn't get a response. I know it is difficult since you can't see the picture on my homework. Can you tell me if I started correctly and used the correct formula for surface area of a triangular prism? Is there a way to post a pic to help ...
Monday, May 9, 2016 by sara

math
Ben is to invest $13 000 for 3 years at 8% p.a with interest paid annually. Find the amount of interest earned by calculating the simple interest for each year separately. I know how to solve this using the normal method, but i don't know how to do it by calculating the ...
Monday, May 9, 2016 by help

Math
Solve the inequality. [( 2x^2+5x-3 ) / (x^2 -8x+ 16) ] >= 0 I factored out the bottom to (X-4)(X-4). The top should be 2(x+ ? )(x- ?). What would I do next to finish the problem?
Monday, May 9, 2016 by Ken

math
A jar of gumballs contains 50 red gumballs, 45 yellow gumballs, and 30 green gumballs. You randomly select a gumball, then select another without putting it back. What is the probability that you draw two red gumballs as a percent and a fraction in simplest form?
Monday, May 9, 2016 by May someone please help me quickly.

math
A jar of gumballs contains 10 blue gumballs, 20 green gumballs, 15 yellow gumballs, and 25 pink gumballs. You reach into the jar and randomly select a gumball, then select another while replacing the first gumball back. What is the probability that you draw a green gumball as ...
Monday, May 9, 2016 by May someone please help me quickly.

math
Equation of moving point A = ( 1,3) B = ( 3, 1)
Monday, May 9, 2016 by rena

math
The second term of an arithmetic progression is 8 and the eleventh term is -10 Find the first term, the common differrnce and sum to 15 terms
Monday, May 9, 2016 by may

math
8 Which numbers from this list are less than −0 9. 4?
Monday, May 9, 2016 by Anonymous

Math
2(3c to the 2nd power+ c +-2 Please check 6c to the 4th power+c squared + -4
Sunday, May 8, 2016 by Tanya

Math
WhT is there relationship between the lines having the equations y=4x+2 and y=1/4x? Is it because they are neither parallel nor perpendicular?
Sunday, May 8, 2016 by Stacey

Math
Solve 9-3devidedby1/3+1=
Sunday, May 8, 2016 by Yo

Math
Find two consecutive odd integers whose product is 323. Would the two numbers be 17,19 and -17,-19???
Sunday, May 8, 2016 by Paul

Math
A baseball is thrown upward. The path of the baseball models the equation h= -4.9t^2 + 9.2t + 1.6, where h is height of the ball, in metres, after t seconds. How long does it take the baseball to fall to the ground? Plzzz help
Sunday, May 8, 2016 by Paul

Math
Please check Simplify 7t+3+t+9=8t+12 Simplify m-2-4m-5=-3m+7 Solve 90=5t+t 90=6t t=15
Sunday, May 8, 2016 by Tanya

Math
A ladder is placed against a wall so that it reaches 24 feet up the wall. The base is 10 feet from the wall. How long is the ladder?
Sunday, May 8, 2016 by Carlee

Math
An suv drove 54 miles using 3 gallons of gas at this rate how far could it drive with 5 gallons of gas?
Sunday, May 8, 2016 by Lauren

Math
A rectangular garden measure 15m by 10m. When each side is increased by the same amount, the area of the garden is doubled. Find the dimensions of the new garden.
Sunday, May 8, 2016 by Sara Graf

math: pre-calculus
You have 5 grams of carbon-14; whose half-life is 5730 years. a)Write the rule of the function that gives the amount of carbon-14 remaining after x years. b)How much carbon-14 will be left after 4,000 years? c)When will there be just 1 gram left?
Sunday, May 8, 2016 by Nicky

math: pre-calculus
Solve the equation. First express your answer in terms of natural logarithms (for instance, z=(2+ln5)/ln3). Then use a calculator to find an approximation for the answer. 3^x+9=2^x.
Sunday, May 8, 2016 by Nicky

math: pre-calculus
If current rates of deforestation and fossil fuel consumption continue, then the amount of atmospheric carbon dioxide in parts per million (ppm) will be given by f(x)=375e^0.00609c, where c=0 corresponds to 2000. a)What is the amount of carbon dioxide in 2022? b)In what year ...
Sunday, May 8, 2016 by Nicky

math: pre-calculus
Solve the equations. Log(6x-1) = Log(x+1) + log4
Sunday, May 8, 2016 by Nicky

math: pre-calculus
Let u=lnx and v=lny. Write the expression ln3√x/2y in terms of u and v. For example, lnx^3y=lnx^3+lny=3lnx +lny= 3u+v.
Sunday, May 8, 2016 by Nicky

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