Friday
January 20, 2017

Homework Help: Math

Branches of Math

Recent Math Questions

Math!!!
Let z=-8+15i and w=6-8i. Compute zz/ww (each of the second ones, z and w, have a bar over them) where the bar represents the complex conjugate.
Wednesday, January 4, 2017 by Mark

Math
What constant must we place in the question markbelow in order to be able to factor the resulting expression into the product of two linear factors: 2mn - 16m - 7n + ?
Wednesday, January 4, 2017 by Mark

math
if A+B+C=Ï€ prove that sin(B+2C)+sin(C+2A)+sin(A+2B)=4sin(B-C)/​2 sin(C-A)/2 sin(A-B)/2
Wednesday, January 4, 2017 by rabin

Math
Find the average rate of change in height of the orange from t=2 to t=5 (in feet per second) The equation is h (t)=605+15t-4.9t^2 in feet. I know the the average rate of change is change in q/ change in time. Do I put t=3 and subtract the quantity of 5 and 2 in the formula for...
Wednesday, January 4, 2017 by John

Math
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 46.6 m/s in a time of 6.82 s. The mass of the car and riders is 6.72 Ã&#...
Wednesday, January 4, 2017 by Thomas

Math
For what real values of c is x^2 + 16x + c the square of a binomial? If you find more than one, then list your values separated by commas. Need help...
Wednesday, January 4, 2017 by Aidan

Math
the points A,B,C,D,and E are evenly spaced, what is the point of A and C on the number line __(a)___(b)-2.83_____c___d___(e)1.64
Wednesday, January 4, 2017 by Darryl

math
How is 1/7 reasonable in the Jordan is making a necklace
Wednesday, January 4, 2017 by izaiah

Math
I am trying to figure out how to do a sun and finding the product or quotient and writing the strategy that I use. I'M IN GRADE 4 NOT SURE HOW TO DO IT
Wednesday, January 4, 2017 by Kaelicia

Math
Two of the vertices of a rectangle are 1,-6 and-8,-6 the rectangle has a perimeter of 26 units, what are the coordinates of the other two vertices
Wednesday, January 4, 2017 by Brenden

Math
What does 5 yards 2 feet 3 inches plus 2 yards 2 feet 9 inches equal?
Wednesday, January 4, 2017 by Lulu

Math
explain why 9997 is not a prime using euclidean algorithm
Wednesday, January 4, 2017 by Phyllis

Math
darry and nay eat dinner at a restaurant with 6% sales tax. They leave an 18% tip on the pre tax amount of the bill. If they paid a total of 37.20, what was their pre tax bill?
Wednesday, January 4, 2017 by Darryl

math - calculus help!
An inverted conical tank (with vertex down) is 14 feet across the top and 24 feet deep. If water is flowing in at a rate of 12 ft3/min, find the rate of change of the depth of the water when the water is 10 feet deep. 0.229 ft/min 0.449 ft/min 0.669 ft/min 0.778 ft/min 44.90 ...
Wednesday, January 4, 2017 by Danni

math
Lisa is thinking about two positive integers. The larger integer is seven less than twice the smaller integer. The larger integer is also three more than the smaller integer. What is the larger of the two integers that Lisa is thinking about? ~So the problem just throws me off...
Wednesday, January 4, 2017 by edgard

math
1.Of the students in Rosalie’s dance class, 29 out of 59 have participated in dance class before. About how many of her students have participated in dance class before? (1 point) 0 1/2 (My answer) 1 2 For questions 3–5, use the recipe below...
Wednesday, January 4, 2017 by Kailyn

mATH
Crystal buy headphones that are on sale with a 40% discount. If she paid $24 for the headphones with the discount, what is the full price of the headphones?
Wednesday, January 4, 2017 by Darryl

4th Grade Math
Ben is helping plant tulips. He plants bulbs in two rows and has one bulb left over. So he tries again. He plants bulbs in three rows and has one bulb left over. So he tries again. He plants bulbs in four rows and has one bulb left over. So he tries again. He plants bulbs in ...
Wednesday, January 4, 2017 by James

Math
James spends $10 on supplies for a lemonade stand and sells $30 worth of lemonade What was his profit?
Wednesday, January 4, 2017 by Aaliyah

Math
Graph the given functions below X Y f(x)={3 0 < eqaul to x< 2 f(x)={2 2< equal to x < 4 f(x)={1 4 < equal to x < 6
Wednesday, January 4, 2017 by Tina

Math
If Harrison games for 2hrs every weekday, and 4hrs every weekend, how many hours does he play in two weeks if he went camping with no electricity for 3 days starting Sunday. A: 84 B: 88 C: 90 D:96 E: none of these Ps please reword or explain the question
Wednesday, January 4, 2017 by Carol

Math
Write an equation in slope intercept form for the line describe Through (-5,6), perpendicular to x= -2 I got x= -5 which i got wrong
Wednesday, January 4, 2017 by April

Math
The temperature at 5 am was -28 degrees F. The temperature at 2pm was 17 degreesf. If the temperature changed at a constant rate from 5am to 2pm what was the temperature at 6am?
Wednesday, January 4, 2017 by Darryl

Math
one-third of lexie's age is 4 years more than one-fifth of this age. lexie's sister is five years younger than her. how old is lexie's sister?
Wednesday, January 4, 2017 by Sana

Math
A boat has a mass of 5680 kg. Its engines generate a drive force of 3380 N due west, while the wind exerts a force of 990 N due east and the water exerts a resistive force of 1310 ...
Wednesday, January 4, 2017 by Bob

Math
Calvin height at the end of 2015 was 4 feet 2 inches. At the end of 2016, Calvin is now 4 feet 5 inches tall. By what percent did calvins height increase from 2015 to 2016?
Wednesday, January 4, 2017 by Darryl

Math- integers
Explain the meaning on 0 : a decrease of 250 attendees
Wednesday, January 4, 2017 by Leah

Math
Graph the function below F(x)={2/3x x<-2 {-2 -2 < eqaul to x <1 {-3x+1 x > eqaul to 2
Wednesday, January 4, 2017 by Tina

Math
Write an equation in slope intercept form for the line described Through (-1,4) parallel to x+3y=5
Wednesday, January 4, 2017 by April

math
if 5 people want to share a 2 pound sack of potato chips equally by weight, how many pounds of potato chips should each person get?
Wednesday, January 4, 2017 by maria

Math
If five bags of mulch covers 32 square feet, how many square feet could 16 bags cover?
Wednesday, January 4, 2017 by Camron

math
p=14.63â‹…0.8 Atmospheric pressure, measured in pounds per square inch p, s, i is the force exerted by Earth's atmosphere over a given area. The atmospheric pressure, p, exerted on an airplane flying at an altitude of a miles above sea level can be ...
Wednesday, January 4, 2017 by ryn

Math
A lawn care company charges a homeowner $1625 a year to maintain the lawn that is 65' x 50' what is the maintenance fee per square foot
Wednesday, January 4, 2017 by Bre

Math
How do i find X when my teacher tells me circling the letter x is not how you find it?
Wednesday, January 4, 2017 by Girl with No Life

math
Jack has 5 more apples than Jill. Jill has 3 apples. How many apples in total do they have?
Wednesday, January 4, 2017 by Jack

Math , check my answer ?
Lynne invested $35,000 into an account earning 4% annual interest compounded quarterly. She makes no other deposits into the account and does not withdraw any money. What is the balance of Lynne's account in 5 years? $37,153.21 $39,438.88 $42,706.65 <my choice $56,295.30
Wednesday, January 4, 2017 by Lia

Algebra (math)
The graph represents function 1 and the equation represents function 2: A graph with numbers 0 to 4 on the x-axis and y-axis at increments of 1. A horizontal straight line is drawn joining the ordered pairs 0, 3 and 4, 3. Function 2 y = 4x + 1 How much more is the rate of ...
Wednesday, January 4, 2017 by Winchester

Math
Which of the tables represents a function? Table A Input Output 3 1 3 4 2 3 Table B Input Output 2 7 5 6 2 9 Table C Input Output 1 5 7 2 7 3 Table D Input Output 3 4 1 5 8 5
Wednesday, January 4, 2017 by Winchester

Math
A salad dressing is 25% vinegar.Sue wants to make 2 cups of dressing.How much vinegar does she need?
Wednesday, January 4, 2017 by Julie

math
The cost of fencing a square field at rupees 1.60per meter is rupees 3200. Find the cost of reaping the field at rupees1.20per 100sq . meter
Wednesday, January 4, 2017 by ritesh

math
find the 7th term of the geometric progression if the first and 5th terms are 16 and 9 respectively.
Wednesday, January 4, 2017 by triz

Math
A(-1,1) B(1,5), C(3,1) are the vertices of triangle ABC. if M is the midpoint of BC, find BM
Wednesday, January 4, 2017 by Ciara

Math
I bought three times as many erasers as pens and spent $155 in total. I spent $65 more on the pens than the erasers. Given that 's pen cost $1.90 more than an eraser, find the cost of a pen.
Wednesday, January 4, 2017 by Anonymous

Math
Martin has a vegetable garen that is 8 feet long and 5 feet wide. Next years he want to increase both the length and width of the garden by 15%. What will the dimensions of the garden be next year? Length __________ feet Width_____________ feet
Wednesday, January 4, 2017 by Darryl

Math
I have a 76 average in the class. We have one more test, and tests are weighted at 60%. What grade do I need to get to an 80?
Wednesday, January 4, 2017 by Joan

Math
⅓x(15x-12y)- ½(6x-4y)
Wednesday, January 4, 2017 by Shaakirah

Math
How many 4-digit numbers can be formed using the numbers 4, 5, 6 and 7? How many of the 4-digit numbers are less than 7000?
Wednesday, January 4, 2017 by Jomarey

Math;);)
Show that there are at least two ways to calculate the angle formed by the vectors [cos 19, sin 19] and [cos 54, sin 54].
Wednesday, January 4, 2017 by Anonymous

math
What is the fifth term in the arithmetic sequence defined by the explicit formula an=6n−4? Enter your answer in the box. a5=
Tuesday, January 3, 2017 by Jay

Math
2/3m-6.5=0.7
Tuesday, January 3, 2017 by Darryl

Physics, math, algebra
How long will it take a sled to reach the bottom of a hill, if it accelerates at 5.60m/s^2 and has a final velocity at the bottom of the hill of 42.3km/h?
Tuesday, January 3, 2017 by Anonymous

Math
Write a division equation that has a solution of -9/14
Tuesday, January 3, 2017 by Anonymous

Math
The roots of the quadratic equation z^2 + az + b = 0 are 2 - 3i and 2 + 3i. What is a+b? Can you please help me with this question?
Tuesday, January 3, 2017 by Joshua

Math
Asked to simplify the expression sin(180â&Atild​e;‹â€ Ã¢​;€™&A​tilde;ƒÆ’Â&​Acirc;¨), Rory volunteered the following solution: ...
Tuesday, January 3, 2017 by Anonymous

Math
For what real values of a is x^2 + ax + 25 the square of a binomial? If you find more than one, then list your values in increasing order, separated by commas. If you could help me, that would be great!
Tuesday, January 3, 2017 by Jeff

Math
Jaine spent 2/5 of the money in his wallet on a sweat. After purchasing the sweater he had 25.32 leftover. What was the total amount he spent on the sweater?
Tuesday, January 3, 2017 by Darryl

math
7x-4-3x=2x+10
Tuesday, January 3, 2017 by Anonymous

math
Given that a:b = 8:5 and b:c= 3:4 find the ratio a:b:c Give your answer in its simplest form. Show all working out. My work: 1) 5 and 3 both equal to b. 2) 8+5=13/2= 11.5 3)3+4=7/2=3.5 4)11.5+3.5= 15 All my working shown I dont understand this question please help!
Tuesday, January 3, 2017 by supersupersuper

math
The bottom of a ladder is on horizontal ground. The top of a ladder is leaning against a vertical wall. Diagram: right angle triangle labelled height is h metres, bottom of triangle is labelled d metres and in between the labelled h and d metres there is a 90 degrees angle. ...
Tuesday, January 3, 2017 by supersupersuper

math
Mark is 5 years older than twice Jessica's age. The sum of their ages is 32. How old is Mark. Use M to represent Mark's age and J to represent Jessica's age. Which system of equation could be used to find mark's age? ~M=2J+5 M+2J=32 I think it is right please ...
Tuesday, January 3, 2017 by edgard

math
Given that 3 to the power of -n= 0.2 find the value of (3 to the power of 4) to the power of n. so 3^-n=0.2 find value of (3^4)^n my working out: 1)3=n surd 0.2 2)n must be decimal number 3) cuberoot o.2=0.5848035476425733 4)so n=0.5848035476425733 5)(3^4)^0.5848035476425733=...
Tuesday, January 3, 2017 by supersupersuper

math
Diagram: OAZ line on top horizontal OXB line vertical under O BYA line diagonal from B to A to form a triangle which is OBA In the middle of O and B there is a line to show x which is nearer to B. In the middle of line BA there i s a line to sow Y in the middle. Question: OAB ...
Tuesday, January 3, 2017 by supersupersuper

Math
Two stores carry a similar stereo for the same original price of $573. One store offers a 16% discount and the second store sells the stereo for $458.40. Which store gives the bigger percent discount? Justify your answer.
Tuesday, January 3, 2017 by Anonymous

math
2.Two cars leave Kansas City at the same time. One car is moving east and the other west. After 5 hours, the cars are 575 miles apart. One car is traveling 15 miles per hour faster than the other. Let S = the speed of the slower car and F = the speed of the faster car. If one ...
Tuesday, January 3, 2017 by edgard

math
the diagram shows a piece of wood in the shape of a cuboid. diagram: 3cm width, 20cm length, 1.2m for the volume of cuboid The piece of wood is 3cm by 20cm by 1.2m. The mass of wood will float in sea water if the density of the wood is less than the density of the sea water. ...
Tuesday, January 3, 2017 by supersupersuper

Math
Find each unit rate round to the nearest hundredth 9 runs in 3 games
Tuesday, January 3, 2017 by Tes

math
A pancake recipe calls for 0.75 cups of flour.linda is making 5 batches.she already has 2.5 cups of flour. How many more cups does she need?
Tuesday, January 3, 2017 by nora

Math
The width of a rectangle is two thirds its length the width of the rectangle is 10 inches what is the perimeter of the rectangle and what is the area of the rectangle
Tuesday, January 3, 2017 by Emily

math
A pitcher contains quart of lemonade. If an equal amount of lemonade is poured into each of 6 glasses,how much lemonade will each glass contain?
Tuesday, January 3, 2017 by Jayde

Math
It takes Marty 1 1/4 hours to get ready for school. If 1/5 of that time is used to shower, what fraction of an hour does it take him to shower?
Tuesday, January 3, 2017 by Brian

Math
Describe each of the three methods you can use to find the area of a rectangle.
Tuesday, January 3, 2017 by Sky

Math
Solve the simultaneous equation n/4-m/6=-1 Using elimination method
Tuesday, January 3, 2017 by Zulaiykherh

Math
1/3 pitcher water + 2 apple juice - 1/3 carton milk =
Tuesday, January 3, 2017 by Rachel

Math
Solve the simultaneous equation P^2-Q^2=40 Q+P=10 Using the substitution method
Tuesday, January 3, 2017 by Zulaiykherh

Math
Can someone give me the answers to the U6 math test? For 6th grade?
Tuesday, January 3, 2017 by Kailyn

math
An aeroplane flies from a town p on(lat.40N,38E)to another town Q on (Lat.40N,22W).It later flies to a third town T on(Lat.28N,22W). Calculate the average speed at which the aeroplane will fly from P to T via Q, If the journey takes 12 hours. Take R to be 6400 and py to be 22/7.
Tuesday, January 3, 2017 by triz

math
simplify square root of -25
Tuesday, January 3, 2017 by walace

Math
A pendulum of Length L cm has time period T seconds. T is directly proportional to the square root of L. The length of the pendulum is increased by 40%. What is the percentage increase in the time period? ???????? Multiplier for increasing L = 1.4 Multiplier for increasing T...
Tuesday, January 3, 2017 by Alex

Math
The difference between two whole numbers is 15. One of the numbers is 1. There are two possibilites for the second number. What are they?
Tuesday, January 3, 2017 by Anonymous

math
Mr.savage used 3 gallons of paint to cover 1350 of square feet of wall .at this rate how much paint wiil be needed to cover 1800 square feet.
Tuesday, January 3, 2017 by sharya

MATH
WHAT IS THE RATIO FPR A RECIPE THAT CALLS FOR 3 EGGS FOR EVERY 9 CUPS OF FLOUR
Tuesday, January 3, 2017 by CHANDRA

Math
translate into a word problem then solve. One fourth of the villains nabbed by the second rate superheroes were jaywalkers. one ninth of those were illegal double parkers too. what fraction of the nabbed villains were both jaywalkers and illegal double parkers.
Tuesday, January 3, 2017 by Hia

Math
These are the first 5 terms of a quadratic sequence: 1 3 7 13 21 1st difference: 2 4 6 8 2nd difference: 2 2 2 1n^2: 1 4 9 16 25 adjustment: ? ? ? ? ? Thank you very much.
Tuesday, January 3, 2017 by Elisha

Math (please check my answer!!)
Which of the following is the point of concurrency of the medians of the triangle? A. The incenter B. The circumcenter C. The orthocenter D. The centroid <<<
Tuesday, January 3, 2017 by Ren

Math
When the number c is multiplied by 7, the result is the same as when c is subtracted from 7. What is the value of 16c? A. 14 B. 7/8 C. 8 D. 8/7 E. 7
Tuesday, January 3, 2017 by I'mHungry

math
The difference of two numbers is 321. The larger number is 190 more than twice the smaller number. Which system of equations presents this information? (S = smaller number and L = larger number) I got: L-S=321(the difference) L=2S+190 What did i do wrong please help me
Tuesday, January 3, 2017 by edgard

Math
A sheet of paper measures 30 cm by 2 cm. A strip 5 cm wide is cut from it all around. Find the area of the remaining sheet and the strip cut out.
Tuesday, January 3, 2017 by Rajender kumar

Math
A post 8 m tall casts a shadow of 11m A tall building nearby casts a shadow of 55 m how tall is the building
Tuesday, January 3, 2017 by Eliza grace quintana

Math
f(x)=(1+x)/(1-x),g(x)=x/(1-x), find the simplest form of f[g(x)] and state the domain. My work: (1+ (x/(1-x)))/(1-(x/(1-x))) (1+x)/(1-x)/(1-x)/(1-x)
Tuesday, January 3, 2017 by Anonymous

Math
A buidling of 25 meters casts a shadow 15 meters long on the ground . What will be the length of the shadow cast by a building 40 meters tall
Tuesday, January 3, 2017 by Sidhartha

math coordinate geometry
Find the 3rd vertex of a triangle ABC.If 2vertices are A(-4,3),B(4,3)and its centroid is at orFind. Find 3rd.
Tuesday, January 3, 2017 by Anonymous

Math
Beth is waiting for her friends plane to land. the plane will land at time T uniformly distributed in 70 minuetes. Determine the probability that the Plane will land in 30 minutes?
Tuesday, January 3, 2017 by Ali

Math
Benson is 2 years less than twice Jackson age and all together equal 19
Tuesday, January 3, 2017 by Ana

Math
5 pencils are in a bag.There are 3 times as many pens than pencils in the same bag. How many pens are in the bag
Monday, January 2, 2017 by Shabazz

Math
If I were to make an equation so that the left side were a reciprocal function and the right side were an absolute value function, then the equation would be guaranteed to have at least one solution. Why?
Monday, January 2, 2017 by Mikala

Math for 5th graders
Hi I am a fifth grader I need to learn how ferries wheel in 5th grade math
Monday, January 2, 2017 by Essence

Math
Compare Noah's expenses to the following spending guidelines. What changes would he need to make to fall within the guidelines?
Monday, January 2, 2017 by Rose

Math
Danny's car can drive 32 miles on each gallon of gas. He has an 18 gallon tank thank is 3/4 of the way full. How many miles can he drive on the gas he has?
Monday, January 2, 2017 by Traci

math
the difference between two whole number is 26 and one number is three times the other then the smaller number is..........my work x-y=26,3x_y=26
Monday, January 2, 2017 by Anonymous

Math
Create an equation where the left side is a cubic function and the right side is a cube root function. Make it so that the equation has exactly one solution. Please help me solve thanks
Monday, January 2, 2017 by Mikala

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