Thursday
December 8, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

Math
A game is played using one dice. If the dice is rolled and shows 1, the player wins $1; if it shows 2, the player wins $2; if it shows a 3, the player wins $3. If the die shows 4,5,or 6 the player wins nothing. a.) If there is a charge of $1.25 to play the game, what is the ...
Friday, November 18, 2016 by Ryan

math
The equation 4x^2 +9y^2 -36 = 0 represents an ellipse in standard position. Find the coordinates of the foci and the equations of the directrices. The Foci are (+-f, 0) where f>0 I have worked out f=sqrt(5) not sure how to work out the directrices (d)
Friday, November 18, 2016 by s17

math
Two ships pursue straight-line courses at steady speeds. At each time t (in hours, where 0 less-than-or-equal t less-than-or-equal 14), the positions of the two ships are given by: Ship A (10t+35, 20t+25) Ship B (11t+15, 22t+15) These coordinates are with reference to a ...
Friday, November 18, 2016 by s17

math
Find a parametrisation of the hyperbola that is obtained by translating the hyperbola with equation 9x^2 - (y^2)/16 =1 by -2 unit(s) right and 4 unit(s) up x=? y=?
Friday, November 18, 2016 by s17

Math
The cylindrical bottle sells for $54.00, the conical bottle sells for $20.00 and the spherical bottle for $35.00. What is the best buy per cubic centimeter of perfume? Show work AND explain your reasoning. Cylinder- V=1497.4589878895 cm3 Cone- V=499.15299596317 cm3 Sphere- V=...
Friday, November 18, 2016 by Embershy

Math
Show the steps to determining the volume of questions 1-3 1. A cylinder with a radius of 6.2cm and height of 12.4cm what is the volume. 2. A cone with a radius of 6.2cm and a height of 12.4cm what is the volume. 3. A sphere with a radius of 6.2cm what is the volume
Friday, November 18, 2016 by Embershy

Math
Elizabeth has 1 7/10 as many as Rosalie has in her garden. If Elizabeth has 51 plants how many plants does Rosalie have in her garden? Please explain step by step on how you answered this and also no links or anything please just a raw answer thanks in advance :).
Friday, November 18, 2016 by WafflesLord

Math
On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip the average speed was y miles per hour. The average speed for the round trip was 50 miles per hour. Show that y=25x/(x-25) Find the limit of y as x approaches 25 ...
Friday, November 18, 2016 by Matt

Math
The measurement of the radius of a circle is 16 inches, with a possible error of .25 inches. Use differentials to approximate the possible propagate error in computing the area of the circle.
Friday, November 18, 2016 by Matt

math
x8+x4+1
Friday, November 18, 2016 by algebra

math
two paths each of width2.5 run across the middle of a rectangular field of15 long and 9m wide.find the area of the paths.
Friday, November 18, 2016 by algebra

math
this is not about math but i am from connexus too and the teachers only care about our grades i am a 7 th grader
Friday, November 18, 2016 by annaka

Order MATH!
Order the numbers 0.64,2/3, 65%, and 7/10, from least to greatest. Can You PLZ Tell Me How U Did This? THX!
Friday, November 18, 2016 by Agal

math
James attached a diagonal brace a rectangular frame that measures 6 feet by 8 feet. What is the length of the diagonal brace? A. 2 feet B. 10 feet C. 14 feet D. 48 feet i think it is D
Friday, November 18, 2016 by bub

Math
Omar's current annual salary is $75,000. How much will he need to earn 15 years from now to retain his present purchasing power if the rate of inflation over that period is 2%/year? Assume that inflation is continuously compounded.
Friday, November 18, 2016 by Julie

math
Wanjiku spent ¼ of his net January salary on school fees. He spent ¼ of the remainder on electricity and water bills. He then spent 1/9 of what was left on the transport. If finally had sh. 3,400, what was his January salary?
Friday, November 18, 2016 by Flora88

Math
ella took a biology test of 54 question. She got 5/6 with a question correct how many questions did she get wrong on her biology test?
Friday, November 18, 2016 by E

Math (Differentials)
Use differentials to approximate the value of the expression. cube root of 25 I set x=27 and dx=-2 and got ~3.0741, what did I do wrong?
Friday, November 18, 2016 by Ray

math
How mant six and one forth inch pieces can be cut from a seventy-five inch role of fabric?
Thursday, November 17, 2016 by Barbour

Math
A satellite dish has a diameter of 32 inches and is 6 inches deep. If the antenna needs to be put at the focus of the parabola, where would the parabola be placed?
Thursday, November 17, 2016 by Harry

Difficult math 2
At the market, 0.2 of the pieces of fruit are peaches, 0.25 is apples, 0.05 is lemons, 0.1 is cherries, 0.2 is grapes, and 0.15 is plums. There are also 8 pineapples and 4 mangos. How many peaches are for sale at the market? How many apples? Lemons? Plums?
Thursday, November 17, 2016 by XXX

Difficult Math
One quarter of Steve's baseball cards are from his dad's collection. Another 0.2 are from his uncle, and 0.5 are from his brother. The rest are from Steve's cousin. Thirty of the cards from his cousin are National League players; the other half are American League...
Thursday, November 17, 2016 by XXX

Math
The perimeter of the floor of a room is 18m and its height is 3m. What is the area of 4 walls of the room?
Thursday, November 17, 2016 by Shivam

Math
The ratio of the number of boys to the number of girls in a theater is 7:9. There are 12 More girls than boys in the theater. How many children are in the theater?
Thursday, November 17, 2016 by Sue

MATH HELP!!
if you wanted to find the difference of 6/25 - 4/5 what common denominator should you choose
Thursday, November 17, 2016 by no0ne

math
How to do percent
Thursday, November 17, 2016 by Darlene

Math
What is 100,000,000,000,000 times 999,999,999,999?
Thursday, November 17, 2016 by David

Math
What is 1/10 of 2(10)+4(1)+6(1/10)+7(1/100)+8(1/1000)
Thursday, November 17, 2016 by Danielle

Math
Put these numbers from least to greatest 80/100 9/10 and 7/10
Thursday, November 17, 2016 by Danielle

Math
Jessica played on the school chess team last year. She won 65% of the games She played. If She won 13 games, How many did She playi?
Thursday, November 17, 2016 by Danny

Math
Which answer will be greater 1/3÷5 or 5÷1/3
Thursday, November 17, 2016 by April

Math
A recipe asks for y Three and one thirds cups of milk how much milk is needed to make one and one half recipes?
Thursday, November 17, 2016 by Mikail

Math
Tiny scored 94, 68 and 88 on her first 3 Algebra 1 tests. Her next test is her final which counts as double. Write and solve an equation that Tina could use to determine the minimum grade she must score on her final to have a mean score of 80.
Thursday, November 17, 2016 by Reanah

Math algebra
Considerthe function f(x)= x-2/x^2-81 for what value of x if any will this function a) equal 0 B)be undefined. Explain.
Thursday, November 17, 2016 by Dila

Math algebra
As of 2012, the movies with the highest worldwide box-office sales are Avatar, Titanic, and The Avengers. The total box-office sales for all three movies were $6.5 billion. The box-office sales for Avatar were $0.2 billion less than twice the box-office sales for The Avengers...
Thursday, November 17, 2016 by Chloe

Math algebra
Sharons rectangular vegteable garden is 20 feet by 30 feet. In addition mulching her garden, she wants to put mulch around the outside of her garden in a uniform width. If she has enough mulch to cover an area of 936 sqaure feet, how wide should the mulch border be?
Thursday, November 17, 2016 by Karina

math
Estimating the product of a decimal and a whole number what is 8.02 x 70
Thursday, November 17, 2016 by sara

ANOTHER TRIANGLE MATH PROB!
The triangles below are similar. Find the value of x. (the big triangle has two sides that say 21, and the bottom says 24. The small triangle has two sides that say 10.5, and the bottom is X)
Thursday, November 17, 2016 by Agal

Math
the top of a rectangular table has a length that is two times it's width. The perimeter of the tabletop is 144 inches. What is the width of the tabletop?
Thursday, November 17, 2016 by Becca

Survey Math (Ok, THIS Is That Last ONE! Hopefully)
In a survey, one out of three people named blue as their favorite color. Two out of seven named red. If 1,092 people were included in the survey, how many named neither blue nor red as their favorite color? 416 people 432 people 540 people 512 people
Thursday, November 17, 2016 by Agal

math
What is the estimated answer of 0.97x312
Thursday, November 17, 2016 by sara

math
A triangle has an area of 15cm2. If it has a height of 5cm, what is the length of its base?
Thursday, November 17, 2016 by mark mahabir

Math
What is the order of least to greatest for 9/10, 5/6, and 14/15?
Thursday, November 17, 2016 by Katiy

Math (equation of tangent line)
Consider the implicit equation 2xy-1=(x+y+1)^2 a) Compute and solve for the derivative dy/dx as a function of x and y. b) Find the equation of the tangent line to the graph of the above when y=-1. For part a, I found the derivative being equal -(x+1)/(y+1) but how would I find...
Thursday, November 17, 2016 by Ray

Math
A sequence of transformations is applied to triangle MNO to create triangle M'N'O'. * Select all the sequences of transformation that could be applied to to triangle MNO so that triangle MNO ? M'N'O (3 answers) A. a clockwise rotation of 90 degrees and then...
Thursday, November 17, 2016 by Help me please

ELITRICAL MATH! (LAST ONE FOR TODAY, HOPEFULLY!)
Find each unit price. Which is the better buy? Explain. Electrical wire: $1.49 for 3 ft. $.69 for 18 in.
Thursday, November 17, 2016 by Agal

Math
A sequence of transformations is applied to triangle MNO to create triangle M'N'O'. Select all that apply Select all the sequences of transformations that could be applied to triangle MNO so that triangle MNO (equal sign with "~" over it) M'N'O (3...
Thursday, November 17, 2016 by Lol

Math
m^2-3mn+n^2+1=0 3m^2-mn+3n^2=13 What are the solutions? Thanks
Thursday, November 17, 2016 by Ashlee

Math
What makes the statement true? 8-^2=? 64**** 16 -1/26 1/64 Evaluate the expression 4-^2x2^0 8 16*** 1/16 -64 Write 5^2•5-^1•5^3 as a single exponent 5^4 5-^6**** 5^5 5^2
Thursday, November 17, 2016 by Beanhead

Math
Express 0.54 as a fraction in simplest form. .54/100 54/100 27/50******* 100/54
Thursday, November 17, 2016 by Beanhead

Math
Solve. x^2-xy+3y^2=15, x-y=2 Thanks
Thursday, November 17, 2016 by Ashlee

Math
A rectangle is dilated using a scale factor of 6. The image is then dilated using a scale factor of 1/3. What scale factor could you use to dilate the original rectangle to get to the final rectangle. Explain.
Thursday, November 17, 2016 by Anon

Math
Let f(x)=5^x Let g(x)=5^x?7 Which statement describes the graph of g(x)g(x) with respect to the graph of f(x)f(x) ? g(x)g(x) is translated 7 units down from f(x)f(x) . g(x)g(x) is translated 7 units right from f(x)f(x) . g(x)g(x) is translated 7 units left from f(x)f(x) . g(x)...
Thursday, November 17, 2016 by Jay

math
in a two digit number, the sum of digit is 8 the different between this number and number of digit is 54 what is the digit?
Thursday, November 17, 2016 by Dorathy

math
bodmas
Thursday, November 17, 2016 by yevu

TASTY MATH!
A recipe for 24 cookies calls for 6 tablespoons of sugar. If you make 36 cookies and use 10 tablespoons, will the cookies taste the same? Explain.
Thursday, November 17, 2016 by Agal

Math
So, I have a question on a project that asks why you get a different answer when measuring the side of a hypotenuse versus using the Pythagorean Theorem. I did get different answers, but I just can't figure out why.
Thursday, November 17, 2016 by CC

math help pls
1 . the cost in dollars of a field is 64+14n , where n is in the number of people attending . what is the cost for the 48 people ? A. $736*** B. $126 C. $896 D. $910
Thursday, November 17, 2016 by math help

math help pls
Jess played two days of golf . on the second day , he got a score of -6 . his total score for the two days was 0 . define a variable . then write and solve an equation to find the score jess got on the first day . is the answer 6?
Thursday, November 17, 2016 by math help

SPEGETTI MATH!
A package of spaghetti weighs 266 grams. How many ounces does the package weigh? 1 oz ~~ 28 g Is 9.5 the answer?
Thursday, November 17, 2016 by Agal

Math
Juan has scored 71, 94, and 59 on his previous three test. What score does he need on his next test so that his average (mean) is 59.
Thursday, November 17, 2016 by Trinette

math
what is 0.68 written as a simplified fraction? a 68/100 b 17/25 c 100/68 d 34/25 Man Johnsons class is having a pizza party. if there are 14 students and 7 pizzas cut into 8 slices, what answer choice represents the fraction of one pizza that each student receives a 1/3 b 1/4 ...
Thursday, November 17, 2016 by halp meeeee

Math
Use the normal distribution of weights of adult men, which has a mean of 170 pounds and a standard deviation of 7.5 pounds. Use the z-score chart to find the percentage of heights less than 155 pounds.
Thursday, November 17, 2016 by Edwin

math
1. 2f+10= A. f(2+10) B. 2(f+5) C. 2(f+10) 2. 20+24g= A. 4(5+6g) B.20(1+4g) C.5(4+6g) 3. 32b-20= A. 4(8b-20) B.2(32b-10) C. 4(8b-5) for questions 4-5 simplify the expression 4. 24h+3d-10h+8d A. 14h + 11d B. 14h-5d C. 25hd 5. 12s+4+4s-2 A. 18s B. 2(8s+3) C. 2(8s+1)* PLEASE HELP...
Thursday, November 17, 2016 by donuts

NEED HELP MATH!!!!!!!
I DID ALLL THESE Welcome to Jiskha Homework Help! Post homework questions online and get free homework help from tutors. More than 200 tutors volunteer their time to help over 4,000 students with homework everyday. Students receive answers from teachers in various school ...
Thursday, November 17, 2016 by fudge

Math
Lesson 14: Equations and Inequalities Unit Test So I have been looking at these math test to try to help me but idont see any thing and I try to do 1 but it was rong and not right test plz help
Thursday, November 17, 2016 by Bobby

Math
Joy knits a square blanket that has an area of 1,500 square inches. What is the approximate length of each side of the blanket? A.) 16 inches B.) 27 inches C.) 39 inches * D.) 42 inches Is this correct?
Thursday, November 17, 2016 by Dylan

Math
NEED HELLP!!!!!!!! Lesson 14: Equations and Inequalities Unit Test I am behind and need help and I just don't understand at all I watched every thing and did all khan academy just don't under stand and I need it donw bye 12 or it times out !!
Thursday, November 17, 2016 by Anonymous

TRIANGLE HELP!!!! (MATH!)
The two triangles above are similar. a. Find x using the ratio of the sides 12 cm and 16 cm: x/20 = 12/16 Show your work. b. Find x using the ratio of the sides 6 cm and 8 cm. Show your work. c. Explain why the answers to (a) and (b) should be the same. (The small triangles ...
Thursday, November 17, 2016 by Agal

math
Lesson 14: Equations and Inequalities Unit Test CE 2015 Math 7 A Unit 4: Equations and Inequalities all answers need help realy fast I am behind and I don't have anyone in house to help me
Thursday, November 17, 2016 by Anonymous

math
Lesson 14: Equations and Inequalities Unit Test CE 2015 Math 7 A Unit 4: Equations and Inequalities
Thursday, November 17, 2016 by Anonymous

Scale Math HELP!!!!!!!!!!
In the scale drawing below, each side is 1.29 cm long. Use the scale factor shown. What is the perimeter of the actual object? (1 cm = 6.5 m) 12.325 m 52.125 m 41.925 m 61.675 m
Thursday, November 17, 2016 by Agal

math
1 . the cost in dollars of a field is 64+14n , where n is in the number of people attending . what is the cost for the 48 people ? A. $736 B. $126** C. $896 D. $910 2. Suppose you are driving to your vacation destination . you are driving at an average rate of 60 miles per ...
Thursday, November 17, 2016 by math help

Math grade 6, four operations
There were 75 marbles in boxes a,b&c.after moving 28 marbles from box a to b,24 marbles from b to c &19 marbles from c to a,there was an equal number of marbles in each box.how many marbles were there in each box a at first?
Thursday, November 17, 2016 by Peachie

math
find the image of S(-1,-3) after a reflection scross the line y=-2
Thursday, November 17, 2016 by maria

math
What is 14/16 + 1/5
Thursday, November 17, 2016 by aaliyah

math
a company sells one of its product at Rs.12 per unit a year.its cost function is given by [c(x)=0.01x^2+8^x+7],where x represents the number of units.the number of units and the maximum profit for which profit function maximizes are:
Thursday, November 17, 2016 by Ana

Math
The sides of a rectangle are in the ratio4:5.by what fraction should the shorter side be increaaed tomake it a square
Thursday, November 17, 2016 by Maths

math
The position of a ball projected upward from a height of 364 meters is given by the formula s=?16t2+45t+364 where t is the number of seconds elapsed. How long will it take for the ball to reach a height of 187 meters above the ground?
Thursday, November 17, 2016 by faith

math
how you arrange the following to ascending order 8/7, 8/3, 8/4, 8/8
Thursday, November 17, 2016 by lou

Math
A pack with 6 cans of juice costs 3.48. What it the unit price? A.0.49 per can B.0.50 per can C.0.58 per can •• D.0.60 per can
Thursday, November 17, 2016 by Ashley

MATH
construct quadrilateral IN WHICH PQ=PS=5CM RS=5.5CM ANGLE A=90,ANGLE D=120 DEGREE
Thursday, November 17, 2016 by KUKU

math
A chemist test involves measuring two independent quantities A and B, the expressing the results of the test as C such that C= 3A-0.5B. Give that A is normally distributed with mean 10 and standard deviation of 1, and B is also normally distributed with mean 34 and standard ...
Thursday, November 17, 2016 by Frank

math
if it's 5times the fifth term of an ap is equal to 12 times the twelfth term then find its seventeenth term
Thursday, November 17, 2016 by gaurav

Math (Slope of inverse tangent line)
Given the graph, goo.gl/photos/VTMjKvNsVvAQwe3X6 a) What is the slope of the tangent line to the graph of f^-1 at the point (-1/2,-1)? b) What is the slope of the tangent line to the graph of f^-1 at the point (1,2)?
Thursday, November 17, 2016 by Ray

Math
Find the number such that when ¾ of it is added to 3½, the sum is the same as when ? of it is subtracted from 6½.
Thursday, November 17, 2016 by Emmanuel Attai

Math
Derrick built a pen for his dog using one side of his house. He has 28 feet of fencing to use for the three sides of his fence. Make a table that uses the distances d away from the house as input and the length of the side opposite the house and the area as outputs. Have at ...
Wednesday, November 16, 2016 by Caurraine Titus

Math
David starts off at a salary of $10,000 per yer. At the end of each year, he will earn a 4% raise on his previous salary. What will be the first year that he makes $15,000? If Valerie starts off at a salary of $10,000 per year and receives an option of a constant raise of $...
Wednesday, November 16, 2016 by Caitlyn

6 grade math
Please I just need help on the set up teacher wants a guess and check table. Thomas is thinking of a number. If he doubles his number and subtraction 27, the results is 407. Of what number is Thomas thinking?
Wednesday, November 16, 2016 by Jessica

6 grade math
Please I need help on just the set up using a guess and check table. Karina has some dimes and quarters she has 8 more dimes and quarters and the collection of coins is worth $7.45. How many dimes and quarters does Corona have?
Wednesday, November 16, 2016 by Jessica

6 grade math
I need help in the setup teacher wants a guess and check table for the word problem. Just the set up I need help on . Please a wood board 156 cm long is cut into three pieces.the two longer pieces are the same length and are 15 cm longer than the shortest piece. How long are ...
Wednesday, November 16, 2016 by Jessica

math
The credit remaining on a phone card (in dollars) is a linear function of the total calling time made with the card (in minutes). The remaining credit after 26 minutes of calls is $16.36 , and the remaining credit after 45 minutes of calls is $13.70 . What is the remaining ...
Wednesday, November 16, 2016 by .

Math
877.498+374.202 what the answer be 1251.700
Wednesday, November 16, 2016 by Jenny

Math
Mrs. Jones and Mr. Graham had the same amount of money at first. After Mrs. Jones bought a computer that cost $2,055, she had 1/4 as much money as Mr. Graham. How much money did Mr. Graham have? I know that x = y in equation 1. I know that x-2055 = .25G for another. I'm ...
Wednesday, November 16, 2016 by Suh

Math
The point (5,-2) in on the terminal side of an angle t. Find cos
Wednesday, November 16, 2016 by Brandon

Math
A passenger ferry travels between two cities the ferry travels an average speed of 35 mph and the journey one way takes 30 minutes what distance does the ferry cover
Wednesday, November 16, 2016 by Brooke evens

Math.
Each boksheld in the library holds 82. There are 24 full bookshelves in the library. How many books are in library.
Wednesday, November 16, 2016 by Daniel

Math
Which of the following equations could represent the relationship between x and y in the table below? x|1|2|3|4 y|3|9|19|33
Wednesday, November 16, 2016 by Laney

math
a teacher bought five flags of different countries to use in a class activity she added them to the flags she already had in the classroom she borrowed four more flags but two of these weren't used in the end ten flags were used in the activity how many flags were there in...
Wednesday, November 16, 2016 by shea

Math
877.498+374.202 what the answer be 1251.700
Wednesday, November 16, 2016 by Jenny

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