Saturday
June 25, 2016

# Homework Help: Math

## Recent Math Questions

Math
In the triangle ABC given, side AB is twice as long as side AC. We have: m<BAC=120° mBC= 8cm Determine rounded to the nearest unit, the perimeter of triangle ABC.
Monday, June 13, 2016 by L

math
The chance of a head occurring in a certain biased coin is twice that of the tail occurring if the coin tossed 5 times. What is the probability of at most 1 tail occuring in the 5 tossed?
Monday, June 13, 2016 by Ability E.

math
Is the relationship shown in the table proportional? If so, what is the ratio of dollars to months? | Months | Dollars | | 2 | 100 | | 3 | 150 | | 5 | 250 | | 8 | 400 | (a) proportional; $150 per month (b) proportional;$100 per month (c) proportional; $50 per month (d) not ... Sunday, June 12, 2016 by Yang Math If a missile is launched from a station 300 metres above sea level with an initial velocity of 500 m/s what is the height of the missile after 4 seconds Sunday, June 12, 2016 by Michelle math Tai, Tina, and Torri were the three representatives in a cross country race. Tai finished the race in middle position, Tina finished after Tai, in 19th position and Tori finished in 28th. How many schools took part in the race? Sunday, June 12, 2016 by I still don't understand how to do this Math for Business Analysis Let f (x, y) = xy + 5x + 4y model the utility a consumer feels based on the number of the number of cups of coffee, x, and the number of donuts, y, consumed on a given Thursday. Find the absolute maximum and absolute minimum values of f(x, y) over the triangular region with ... Sunday, June 12, 2016 by lex. math Start with the basic function f(x)=2x. If you have an initial value of 1, then you end up with the following iterations. • f (1) = 2 ⋅1 =2 • f 2 (1) = 2 ⋅2 ⋅1 =4 • f 3 (1) = 2 ⋅ 2 ⋅ 2 ⋅1 = 8 1. If you continue this ... Sunday, June 12, 2016 by leandra math √11 real, whole, integer rational or irrational Sunday, June 12, 2016 by dianne math Is -46 real, whole, rational, integer or irrational & why Sunday, June 12, 2016 by dianne Math The ratio of girls to boys is 7:8. the class has 30 students total. How many boys are there???!!! How do I do this ????!!! Sunday, June 12, 2016 by Anonymous Math A tortoise and a hare race against each other. A hare runs at a constant speed of 36 km per hour for exactly ten seconds and waits for the tortoise to catch up. If the tortoise takes two hours to move 1 km, how long will it take to catch up? Sunday, June 12, 2016 by I still don't understand how to do this math and science A space shuttle with a mass of 4,06 X 10kg,orbits earth at a height of 720km above the surface of the earth.calculate the gravitational force experienced by the shuttle Sunday, June 12, 2016 by Tsuu-mani math the angle of elevation of the top of a radio mast from a point 53m from its base on level ground is 61degre. Find the height of the mast to the nearest 5m. Sunday, June 12, 2016 by melvin Math The measure of one angle is 38 degrees less than the measure of its supplement. What is the measure of each angle? Sunday, June 12, 2016 by Jason Math The measure of one angle is 7 times the measure of its complement. What is the measure of each angle? Sunday, June 12, 2016 by Shaun math 9 The number of boys is 3 more than double the girls. Together, there are 54 students in total. How many boys and girls are there? Sunday, June 12, 2016 by Anonymous Math if sinx=cosx Then cosecx=???? Sunday, June 12, 2016 by Dilip math Tai, Tina, and Torri were the three representatives in a cross country race. Tai finished the race in middle position, Tina finished after Tai, in 19th position and Tori finished in 28th. How many schools took part in the race? Sunday, June 12, 2016 by Anonymous math A tortoise and a hare race against each other. A hare runs at a constant speed of 36 km per hour for exactly ten seconds and waits for the tortoise to catch up. If the tortoise takes two hours to move 1 km, how long will it take to catch up? Sunday, June 12, 2016 by Anonymous math What's kinetic energy in electron volts of triply ion of iron which has been accelerated from rest through a potential difference of 100v? Sunday, June 12, 2016 by abdalla Math Can someone please explain this to me in detail? Thank you! To make 4 3/5 cakes, 2/3 pounds of flour is needed. How much flour is needed to make one cake? Sunday, June 12, 2016 by Jasmine math solve the equation:3(x-2)^2-12=0 Sunday, June 12, 2016 by Andrea math If cos A=3/5,cos B =4/5,find the value of cos(A-B)/2 Sunday, June 12, 2016 by eku math If sinA=0.8& A lies between 90Â°and 180Â° find the value of tan1/2A Sunday, June 12, 2016 by eku math construct two different triangles ABC.In which AB=5cm and angle C=54 degrees. find angles A1 and A2 Sunday, June 12, 2016 by emeka ogbodo math A boat sails 'm' miles upstream at the rate of 'r' miles per hour. The rate of the stream is 's' miles per hour. How long will it take the boat to return to its starting point? Sunday, June 12, 2016 by bev Math Can someone please explain this to me in detail? Thank you! To make 4 3/5 cakes, 2/3 pounds of flour is needed. How much flour is needed to make one cake? Sunday, June 12, 2016 by Jasmine math. in 3 banquets/bouquets a man placed 39 rose, 10 tulip in each. how many flowers did he use? Sunday, June 12, 2016 by mohammad ali Math Write 1.5 billion to indian place value system. Saturday, June 11, 2016 by Raj Math Let A be the set of primes less than 6 and B be the set of positive odd numbers less than 6. How many different sums of the form a + b are possible, if a is in A and b is in B? Saturday, June 11, 2016 by Xtian Zhou Math In a sine function, can you replace the phase shift by changing the period? Why or why not? Saturday, June 11, 2016 by A Math Linda scores 72 on her first algebra test. What must she score on the second test if her average score on both tests is to be 81 Saturday, June 11, 2016 by Kiara math if an asset has a depreciable basis of$150,000 and a ten-year life, what will be the amount of amortization for each of the ten years?
Saturday, June 11, 2016 by Sherri

math
A box contains 7 green, 4 red and 3 blue marbles. One marble is pulled from the box without looking, what is the probability of not getting a red marble? Work:7+4+3=14 4/14=2/7 Or 7+3=10 4/10=2/5 Which one is correct.
Saturday, June 11, 2016 by keyli

Math (pre-celc 12)
I'm not sure how to solve this equation algebraically: 38=20sin((2pi(t))/36)+22 I know the answer should be about 5.3 since I graphed it. I can get as far as removing 22 from the right and then removing 20 from the right by dividing by 20. To get 0.8=sin((2pi(t))/36)
Saturday, June 11, 2016 by Jana

Math
"Carlos started at sea level, climbed a cliff to a height of 14 m, then dived 19 m. Find the level at which his dive ended."
Saturday, June 11, 2016 by Ali

math
The base of a right angled triangle measure 48 cm and its hypotenuse measure 50 cm . find the area of the triangle
Saturday, June 11, 2016 by abhishek

math
a man travelled xhrs at 5km/hr and yhrs at 8km/hr .Distance travelled altogether is 20km. find x and y if the average speed for the journey is 7km/hr
Saturday, June 11, 2016 by kayode

math
a boat sails north for 3km, then sails 1,5km west. how far is the boat from its starting position? correct to two decimal
Saturday, June 11, 2016 by Hope

math
Mercy must obtain an average mark of at least 85 to get an A grade in her mathematics examination,out of the four examinations she obtained 80,85 and 82 in the first three. Find the mark she must obtain on the fourth examination of to enable her get an A grade.
Saturday, June 11, 2016 by Glory

Math
The angles of a quadrilateral are in the ratio 2:3:7. The mean of these angle is 64. Find all the four angles?
Saturday, June 11, 2016 by Shubham

Math
What is the smallest member of the solution set of x^2=30-13x?
Saturday, June 11, 2016 by Habiba

Math
The denominator of a fraction exceeds by 4 from the numerator if we increase both by 3 the fraction become 4/3 what will be the original fraction
Saturday, June 11, 2016 by Harsh

math
i am 6 digit number. all my digits are same and their sum is 8 more than 10. who am i?
Saturday, June 11, 2016 by tanpreet

Math - Year 10 - Simult. equations
Find the point(s) of intersection between the following: x^2 + y^2 = 25 3x + 4y = 0
Saturday, June 11, 2016 by Jams

Math
What order do these go in from least to greatest? 2/3 0.2 70% 5/8 33% 0.82
Saturday, June 11, 2016 by Leoni

Math
(a+b)whole square = ?
Saturday, June 11, 2016 by Aman

math
If I am traveling at 60mph and you are traveling at 30mph how many minutes until we meet?
Friday, June 10, 2016 by david

Math
How much will be the value of a house that was bought 9 years ago? X Y 0 100,000 1 105,000 2 107,000 3 110,000 4 115,000 5 120,000 6 123,000 7 126,000 8 ? 9 ? 10 ?
Friday, June 10, 2016 by Ronlecia

Math
X is partly constant and partly varies with y.when y=3,x=7
Friday, June 10, 2016 by Ademiju ayokunle

Math Practice Worksheets
Hi! My son Zakeri is having trouble with polynomials. Could yp please provide some worksheets for my son Zakeri to work on? He's been having trouble with polynomials lately. Thank you! Nancy and Daniel Hamilton (Zakeri's parents)
Friday, June 10, 2016 by Nancy Hamilton (Zakeri H's Mom)

Math
What does the variable a equal when a = 4.9? 3a + 6a = ?
Friday, June 10, 2016 by Tairdelbach_R

math
I do't understand what this is. how do I solve or simplify 100^12/100^8? Am I supposed to add the exponent or multiply them?
Friday, June 10, 2016 by me...

Math (pre-celc 12)
Write an expression for the x-values where the the maximum in the expression occurs: y=6cos((2pi/14)x)-2 I know that the maximum occurs every 14 units if you start at 0,0. I'm stuck after that.
Friday, June 10, 2016 by Jana

math
Mr. Bobby bought 50 shares at $60, and 2 months later purchased 25 shares a$56.at what price should he purchase 25 additional shares in order to have an average price $58 per share? Friday, June 10, 2016 by bev math (significant digits) (3.x10^-2) + (0.2) round to significant digits required Friday, June 10, 2016 by AMELIA math In a course a student's final exam is weighted as heavily as his mid term exam.if a student receives a score of 84 on his final exam 90 on his midterm,what is the average for the course? Friday, June 10, 2016 by tish Math/Dosage Calculations Hey, can someone please check my work for me? I've done this over and over but cannot find my mistake. Am I just supposed to round??? Calculate intake in mL, assume a glass is 8 oz: 6oz. Jello 5oz of Tomato Soup 1/4qt Iced Tea 1/2 glass of water The answer is 700. This is ... Friday, June 10, 2016 by Anonymous Math Please explain to me how to figure out the answers to these questions because I got them all wrong. Don't worry there's only 2.. 1.You roll a number cube 20 times. The number 4 is rolled 8 times. What is the experimental probability of rolling a 4? It's either A. ... Friday, June 10, 2016 by Myah math Marta’s math textbook weighs mc017-1.jpg of a pound less than 4 times the weight of the book she is reading for her language arts class. If the weight of the math textbook is mc017-2.jpg pounds, which shows the correct equation and value of x, the weight of Marta’s ... Friday, June 10, 2016 by david Math If the third term of a gp =4 than product of first five term= Friday, June 10, 2016 by Abhi Math A cylindrical water tank is 70cm in diameter to begin with it is full of water a leak starts in the bottom so that it looses 10 litres every 1 hour how long will it take for the water level to fall by 20cm. Friday, June 10, 2016 by Daniel Math The midnight temperature of Delhi in the month of December was 100C If dropped by 40C in the next three hours.What was the temperature after 3hours Friday, June 10, 2016 by Priya math Find the values of m and n if y^4 + my^3 + 2y^2- 3y + n is divisible by y^2-1 Friday, June 10, 2016 by sim Math: Inverse Function (Plz help) Find the Inverse function of f: f(x)=8+[square root of(8+x)] f^(-1)(x)=_______, x>8 Thursday, June 9, 2016 by Jennifer analytical math rony who is sixteen years old, is four times as old as her brother. How old will Mary be when he is twice as old as her brother? Thursday, June 9, 2016 by nehal Math Triangles ABC and DEF are similar. Find side AC. Round your answer to the nearest tenth. cm Thursday, June 9, 2016 by Irma Math Please explain this to me because im really stumped here!!: The probability of winning a game is 20%. If you play 20 times, how many times should you expect to win? A.4 times B.10 times C.16 times PLEASE HELP!!!! Thursday, June 9, 2016 by Myah Math What are the next three terms in the sequence? -6, 5, 16, 27 Answers: 38, 49, 60 37, 47, 57 36, 45, 54 36, 46, 57 Thursday, June 9, 2016 by Hannah Montana math Jordan has three bills in her wallet. They might be any combination of$5,$10, and/or$20 bills. a) Fill in the organized list to show ll the possible combination of bills.
Thursday, June 9, 2016 by nawab

MATH
Create a rational function with a linear binomial in both the numerator and denominator. Part 1. Graph your function using technology. Include the horizontal and vertical asymptotes and the x- and y-intercepts on your graph. Label the asymptotes and intercepts. Part 2. Show ...
Thursday, June 9, 2016 by MOM

math
what is the surface area of cardboard box? l= 4cm w= 5cm h=10cm
Thursday, June 9, 2016 by sunil

Math
Create a rational function with a linear binomial in both the numerator and denominator. Part 1. Graph your function using technology. Include the horizontal and vertical asymptotes and the x- and y-intercepts on your graph. Label the asymptotes and intercepts. Part 2. Show ...
Thursday, June 9, 2016 by John

Math
You shop for bikes and find 7 types priced at 119 139 149 179 189 199 and 209. you want to buy the 189 bike would you use the mean median and mode to convince your parents that this is a reasonable price for a bike? explain Please help me

math
Create a quadratic polynomial function f(x) and a linear binomial in the form (x − a). Part 1. Show all work using long division to divide your polynomial by the binomial. Part 2. Show all work to evaluate f(a) using the function you created. Part 3. Use complete ...
Thursday, June 9, 2016 by ted

Consider the following pattern involving fractions: 15/20=3/4, 15-3/20-4=12/16=3/4 18/15=6/5, 18-6/15-5=12/10=6/5 1.) Make a conjecture about the pattern. Show that the conjecture is true for another example. 2.) Explain how inductive reasoning can be used to support the ...
Thursday, June 9, 2016 by Jenny

Math
What must be true about the solution to this system of equations? x+4y+9z = -96 -2y+9z = -47 z = -7 a) The solution will describe the intersection point(s) of the 3 graphs. b) The value of z must be -7. c) The solutions will have values for x, y, and z. d) All of the above ...
Thursday, June 9, 2016 by David

Math
Elizabeth claims that she has proven that 7=5with the following: 7(a+b)-5(a+b)=7c-5c 7a+7b-5a-5b=7c-5c 7a+7b-7c=5a+5b-5c 7(a+b-c)/(a+b-c) = 5(a+b-c)/(a+b-c) 7=5 1.) Explain why this is an invalid proof.
Thursday, June 9, 2016 by Jenny

math
find the height of a pyramid whose square base measures 30yd on each side and whose slant height it 45yd?
Thursday, June 9, 2016 by clark

Math
How do you find the height of a scalene triangle when the base and the two side lengths are different? The measurements are base - 12 cm one side - 8 cm the other side - 7 cm I need the height to find out the area
Thursday, June 9, 2016 by Bianca

math
At the malt shop a large chocolate shake takes 8/9 of a pint of milk. If the medium shake takes 1/7 the amount of a large, how much does the medium shake take?
Thursday, June 9, 2016 by Cindy

math
Air expands from 2 m3 to 3 m3 at constant pressure. If the initial temperature is 60 degrees Celsius, what is the final temperature?
Thursday, June 9, 2016 by Anonymous

math
An ellipse and a hyperbola have the same foci, $A$ and $B$, and intersect at four points. The ellipse has major axis 50, and minor axis 40. The hyperbola has conjugate axis of length 20. Let $P$ be a point on both the hyperbola and ellipse. What is $PA \cdot PB$?
Thursday, June 9, 2016 by clache

math
The figure below shows the ellipse $\frac{(x-20)^2}{20}+\frac{(y-16)^2}{16}​=2016$. [asy] defaultpen(linewidth(0.7)); pair c=(20,16); real dist = 30; real a = sqrt(2016*20),b=sqrt(2016*16); xaxis("x",c.x-a-dist,c.x+a+3*d​ist,EndArrow); yaxis("y"...
Thursday, June 9, 2016 by rui rui

math
How many pairs of positive integers $(x,y)$ are there which lie below the graph of the hyperbola $xy = 16$?
Thursday, June 9, 2016 by rui rui

Math/Dosage Calculations
Hey there, still working through that packet. Could someone help explain how I would solve this problem? The answer in the packet says it's 420mL. Thanks in advance! Calculate the fluid intake in mL for the meal. Assume a glass holds 8 oz. 1/3 glass orange juice 1/2pt of ...
Thursday, June 9, 2016 by Anonymous

math/algebra
The surface area of a rectangular prism is SA=2lw+2wh+2lh. The volume of a rectangular prism is V=lwh. Write an expression for the ration of surface area to volume.
Thursday, June 9, 2016 by james

math
1. Marry works in a factory that prudes 1,000 telephones each day when 30 telephones were sampled it was found that 9 were defective estimate how Manny telephones are defective each day. 314 telephones 284 telephones 300 telephones*** 310 telephones 2. A ice cream shop offers ...
Thursday, June 9, 2016 by sam

math
Find an equivalent ratio for the ratio 6 to 7.
Thursday, June 9, 2016 by Anonymous

Math
What is the answer to My hundreds digit is the last odd number. Five less than my hundreds digits is my ones and my tens digit is to more than my ones digit. My thousands digit is three less than my hundreds digit.
Thursday, June 9, 2016 by Jasmine

Math
In a class of 100 students, 40 offer Biology and 10 offer Chemistry and Biology .10 offer Physics and Chemistry , and 30 offer Physic and Biology . Each student offer at least one of the three subjects. The number of students who offer Biology is equal to those who offer ...
Thursday, June 9, 2016 by Delson

Math
A cylinder of curved surface area 1250m² is formed from a rectangular metallic sheet .Find the dimensions of the rectangular sheet I its length is double its breadth?
Thursday, June 9, 2016 by Rohit

Math
A metallic pipe is 0.7 cm thick .Inner radius of the pipe is 3.5 cm and length is 5dm .Find it's total surface area?
Thursday, June 9, 2016 by Raghu

Math - Year 10 - Simult. Equations
Q) find the point of intersection y = 3x x^2 + y^2 = 10
Thursday, June 9, 2016 by Anonymous

regents
I have to take the Regents exam, but there are a great number of math regents exams. If I am in 11th grade,which one should I take??plz help , this is urgent! !😣
Wednesday, June 8, 2016 by Paul

math
Can your x-axis values be percents in a bar graph?
Wednesday, June 8, 2016 by Anonymous

Colour the spinner red and blue. Make it so that when the pointer is spun, the probability of landing on blue is 1 in 4. What is the probability of landing on red?
Wednesday, June 8, 2016 by Sandra