Wednesday
July 29, 2015

# Homework Help: Math

## Recent Math Questions

Math
The temperature of an enclosure for a pet snake should be about 27°C, give or take 3°C. (show your work) a) What absolute value expression can be used to represent this situation? b) Use the expression to determine the temperature range the enclosure should have.
Saturday, June 6, 2015 by Sasha

Math
Alice takes 4 hours to paint a wall. With sam's help, they can paint the wall in 3 hours. Without help, how long would it take Sam to do the same thing?
Saturday, June 6, 2015 by Sean

math
A can of oil is 8 inches high and 8 inches in diameter. What is the approximate volume of the can?
Saturday, June 6, 2015 by scott

math
Ariel wants to choose 5 players for her basketball team. There are 7 players to choose from. How many different teams can Ariel make? A) 21 B) 35 C) 42 D) 56 please help me! And show how you got the answer! I thought you were supposed to go 7*6*5*4*3 but that doesnt equal any ...
Saturday, June 6, 2015 by Anonymous

math
a cylindrical container has a diameter of 14cm and a height of 20cm and is full of water. The water is poured into another cylinder which has a diameter of 20cm. How deep is the water in the second cylinder?
Saturday, June 6, 2015 by jacob

Math
A spinner has three sections. The table shows the results of spinning the arrow on the spinner 80 times. Section 1 18 Section 2 30 Section 3 32 What is the experimental probability of the arrow stopping over Section 3? A. 1/3 B. 1/32 C. 3/32 D. 2/5
Saturday, June 6, 2015 by Jessica

math
A circle of radius 2 is externally tangent to a circle of radius 8. Compute the length of their common tangent.
Saturday, June 6, 2015 by Ryan

math
Solve for all real values of x is 9^x+2=240+9^x THIS ONE IS HARD
Saturday, June 6, 2015 by Ryan

Math
Joan's stamp collection consists of three books. Two tenths of her stamps are on the first book, several sevenths are in the second, and there are 303 stamps in the third book. How many stamps are there in Joan's collection?
Saturday, June 6, 2015 by Ryan

math
In triangle ABC, AC=BC. The point D is on BC such that AB=AD=DC. Compute the measure of angle C. I'm not sure how to do this...
Saturday, June 6, 2015 by Ryan

Math
I'm graphing this periodic function, it has the same min value for each for the two periods, but the max value is different for the two periods. Should I use the higher max value to work out the equation for the function, or should I average them?
Saturday, June 6, 2015 by Amanda

Math
at what time was the incline at 1.71m, if it is at 1.9m now and at 1.4m one hour ago? (assuming that it declining evenly at the same rate)
Saturday, June 6, 2015 by Amanda

Math
What is the difference of the arithmetic sequence 7p+2, 5p+12, 2p-1?
Saturday, June 6, 2015 by Paps olarte

math derivatives
An architect is designing a rectangular building in which the front wall costs twice as much per linear metre as the other 3 walls. The building is to cover 1350 m2. What dimensions must it have so that the costs of the walls is a minimum? write a formula using derivatives
Saturday, June 6, 2015 by Barry

Math
Find p so that 7p+2, 5p+12, 2p-1 ... form an arithmetic sequence.
Saturday, June 6, 2015 by Paps olarte

Math
Form an arithmetic sequence by finding p in the numbers 7p+2, 5p+12, 2p-1...
Saturday, June 6, 2015 by Paps olarte

math
three more than the product of 19 and Victoria's age
Friday, June 5, 2015 by zhara

math
you can rent a car for the day from company A for $26 plus$0.12 a mile company B charges $24.00 plus$ 0.19 a mile. Find the number of miles m (to the nearest mile) per day for which it is cheaper to rent from company A
Friday, June 5, 2015 by Jasmine

math
how many lines of symmetry does a hexagon have i think its 8 or 16 i think its 8 @ms.sue
Friday, June 5, 2015 by anonymous

math
12. Which function is a quadratic function? A. y=3x^2+x B. y=2x-1 C. y=3/x D. y= -|x| Which function rule represents the data in the table? x -3, -2, -1, 0, 1 y 1, -2, -5, -8, -11 A. y=-3x-8 B. y=1/3x -8 C. y=1/3x+8 D. y=3x+8
Friday, June 5, 2015 by Anonymous

Math- algebra
An experiment stain of bacteria is being used to treat an oil spill. A colony of 2^13 cells will be sufficient to ocean up the spill. If the colony is started with a single cell, and cells increase in number by splitting every 15 minutes, in how many hours will the colony ...
Friday, June 5, 2015 by Bill

Math
In simplified form, 24x^4z^-2 --------- = ? 8x^-3z A. 3x --- z B. 16x^7 ----- z C. 3x^7 ---- z^3 D. 16xz E. 3x^7z^3
Friday, June 5, 2015 by Anonymous

math
A ice cream seller sells five flavours of ice creams. How many combinations of 3 scoops of cones are possible. Hint repition of flavours is allowed
Friday, June 5, 2015 by Anonymous

math
A ice cream seller sells five flavours of ice creams. How many combinations of 3 scoops of cones are possible. Hint repition of flavours is allowed
Friday, June 5, 2015 by Anonymous

Math
Convert the polar equation to rectangular form: r = -2cosø - 2sinø
Friday, June 5, 2015 by James

math
Lily uses 1 3/4 meters of ribbon to make a knot. She wants to make 9 similar knots for her cousins. How many meters of ribbon does Lily need ? Round your answer to the nearest meter.
Friday, June 5, 2015 by anonymous

math
The smith family drinks 1 4/5 liters of apple juice each day. the apple juice comes in a 2 liter bottle. How many bottles does mrs. smith need to buy every week?
Friday, June 5, 2015 by anonymous

Math
How much larger than the sum of -1, -2, and 5 is the sum of the squares of these same integers? A. 18 B. 20 C. 22 D. 28 E. 32
Friday, June 5, 2015 by Anonymous

Math
What are the factors of 12c^2 + cd - d^2? F. (4c + 3d) (3c - 2d) G. (4c - 3d) (3c + 2d) H. (6c + d) (2c - 6d) J. 6(2c - d) (c + d) K. 6(2c + d) (c - d)
Friday, June 5, 2015 by Anonymous

Math of class-10
Show that 4/ root 3 is irrational number
Friday, June 5, 2015 by Anonymous

Math of class-10
Show that2/ square root 12 is irrational
Friday, June 5, 2015 by Anonymous

Math of class -10
Prove that 2/ square root 12is irrational
Friday, June 5, 2015 by Anonymous

Math of class-10
Prove that 2/ square root 12is irrational
Friday, June 5, 2015 by Based on 1.3

Math
A bag contains 3 apples and 2 oranges. Another bag contains 2 apples and 4 oranges . A bag and a fruit are picked at random. The probability that the fruit will be apple is
Friday, June 5, 2015 by Uroosa

Math
In Triangle ABC, medians BE and CD are produced respectively to points X and Y such that CD=DX and BE=EY as shown in the figure. Show that the points X, A and Y are collinear. Also show that A is the mid point of XY
Friday, June 5, 2015 by Somanna

Math
How do you do this?: Which ordered pair is on the graph of y= x+ +11
Thursday, June 4, 2015 by Zoe

Math
How do you subtract a negative number from a positive number?
Thursday, June 4, 2015 by Zoe

Math
Use sine law to explain why the 2 equal sides of an isoceles triangle must be opposite the two equal angles
Thursday, June 4, 2015 by Anonymous

math
What is the time when a person is 15 m above the ground? h= 20sin 2pi/40 (t-10) + 21
Thursday, June 4, 2015 by Kitty

Consumer math
Cathy budgets 23% of her income for housing and 21% of her income for food. If she earns $18,000 per year, how much must she budget monthly for housing and food? a.$792 b. $660 c.$7,920 d. $61.30 Thursday, June 4, 2015 by Caleb math For the given function y=-2cos3(x + 180) - 1. Determine the amplitude, period, phase shift, vertical displacement, domain and range Thursday, June 4, 2015 by Kitty How Children Learn 1. Which of the following is an essential ingredient of academic self-esteem? A. Individual assignments requiring problem solving (me) B. Acceptance by teachers and teacher aides C. Meeting deficiency and growth needs D. A school without grades 2. What kind of responses do ... Thursday, June 4, 2015 by Danielle Math 1/6^8/3-2/3 What Do I Do? Thursday, June 4, 2015 by John Dosley Math Sarah needs to cover the lateral area and the base on top of the cylinder. (cylinder 6 in on the base 12 in in length) About how many square inches of paper will Sara need? 282 in. 2 254 in. 2 679 in. 2 565 in. 2 Thursday, June 4, 2015 by Alina math Thom has a scale model of his car. The scale is 1 inch = 12 inches. If the actual car has 16- inch wheels what size are the wheels on the scale model. I don't know where to begin Thursday, June 4, 2015 by Dorothy math Below is a diagram of a right triangle. The coordinates of the two vertices are shown. Find the lengths of sides f and g. Write your answers in terms of the variables f and g. f = √() g = √() Thursday, June 4, 2015 by zenayah Math Jennifer earned$249.60 in 6 1/2 years on a $640 investment. What was the simple interest rate? Thursday, June 4, 2015 by Trent Math given the data 21, 13,13,37,13,23,25,15 what is the out liner a.13 b.15 c.23 d.37 Thursday, June 4, 2015 by Alina Math Tom Whisky ou l'Illusioniste toqué? Thursday, June 4, 2015 by Gregory math help 4,9,x,37 is a quadratic sequence (a)show that x=20 (b)determine the nth term of the sequence thanks in advance Thursday, June 4, 2015 by happy math Ax^2+bx=bx^2+a prove that it's roots are rational for all real values of a and b Thursday, June 4, 2015 by mek Math you own 5 pair of jeans and want to take 2 of them with you on vacation in how many ways can you choose 2 pairs of jeans A.10 ways B.15 ways C.4 ways D.20 ways NEED HELP!! DON'T UNDERSTAND!! Thursday, June 4, 2015 by Alina Math 1.Jennifer writes the letters M-O-N-T-A-N-A on cards and then places the cards in a hat. What are the odds in favor of picking a vowel? 3:7 4:7 3:4**** 4:3 2.Jamal writes the letters k-a-n-s-a-s on cards and then places the cards in hat what is the probability of picking an s ... Thursday, June 4, 2015 by Alina Math Prime factorize the following using factor tree method: 66, 99, 20, 108, 37 and 450 Thursday, June 4, 2015 by Jacob math A 10side of poligon as all its angle equal.how much is each external angles Thursday, June 4, 2015 by salman khan Math If a graph of a quadratic function can have 0, 1 or 2 x-intercepts. How can you predict the number of x-intercepts without drawing the graph or (completely) solving the related equation? Suppose that the graph of f(x) = ax^2+bx+c has x-intercepts (m,0) and (n,0). What are the ... Thursday, June 4, 2015 by Molly math practice help add or subtract (2x^2+6x+1)+(-7x^2+2x-3) 5x^2-4x-2 -5x^2+8x-2 5x^2-8x+2 -9x^2-8x+2 (3x^2-7x-4)-(6x^2-6x+1) -3x^2-x-5 -3x^2-13x+5 9x^2-x+5 3x^2-13x-5 These are just practice problems. could someone help me figure out how to solve them and explain how they got the answer? @Steve... Thursday, June 4, 2015 by Umacblackbelt math help Solve for x 2.3^x=81-3^x thanks Thursday, June 4, 2015 by mek math Simplify the trigonometric function sin^4⁡x-cos^4⁡x cos^2⁡â-sin^2⁡â=​1+2cos⁡â (1+cot^2⁡x )(cos^2⁡x )=cot^2⁡x cot^2⁡t/csc⁡t =(1-sin^2⁡t)/sin⁡t (Work on both sides!) sinècsc&... Thursday, June 4, 2015 by Anonymous math Solve the trigonometric equation from 0¡ã¡Üx¡&Uu​ml;360 tan⁡x+¡Ì3=0 2 sec^2⁡x+tan^2⁡x-3=0 Thursday, June 4, 2015 by Anonymous math Solve the trigonometric equation from 0¡ã¡Üx¡&Uu​ml;360 tan⁡x+¡Ì3=0 Thursday, June 4, 2015 by Anonymous math The function f(x)=7/12 x^2+¦Ð is one-to-one on the domain if and if x¡Ý0. Find the f^(-1) (x). Thursday, June 4, 2015 by Anonymous math Let equation of an hyperbola be y^2-4x^2+4y+24x-41=0 a. Find the standard form b. Find the center c. Find the vertices d. Find the foci e. Find the slant asymptotes Thursday, June 4, 2015 by Anonymous math Let the equation of a circle be x^2+y^2-14x+8y+56 a. Find the standard form of the circle b. Find the center of the circle c. Find the radius of the circle Thursday, June 4, 2015 by Anonymous math let equation of an ellipse be x^2+4y^2+6x-8y+9=0 a. Find the standard form of the ellipse b. Find the center c. Find the vertices d. Find the foci e. Find the eccentricity Thursday, June 4, 2015 by Anonymous Math at 10:00 am on April 26, 2006, a building 300 feet high casts a shadow 50 feet long. What is the angle of elevation of the sun? Thursday, June 4, 2015 by Anonymous math help on this please? Factor completely 2x2 - 2x - 24. (2x - 6)(x + 4) (2x - 8)(x + 3) 2(x - 3)(x + 4) 2(x - 4)(x + 3) Thursday, June 4, 2015 by crissy math F(x)=-(x+1)^2+4 determine the nature of the roots Thursday, June 4, 2015 by kem Math: Arithmetic Sequence. the 3rd of an Arithmetic sequence is 8 of the 16th term is 47. Find a subed 1 and the common difference. Construct the sequence. Thursday, June 4, 2015 by Jan math One ordered pair (a,b) satisfies the two equations ab^4 = 12 and a^5 b^5 = 7776. What is the value of a in this ordered pair? Note: You can enter radicals with the \sqrt command. For example, \sqrt[3]{5} gives you \sqrt[3]{5}. Therefore, you can enter 2\sqrt[4]{6} as "2\... Thursday, June 4, 2015 by bargav math Two paper strips each 5 cm wide are laid across each other at an angle of 30 degrees. Determine the area of the overlapping area. I have no idea where to start with this question or how to go on. I know it has to do with cosine or sine law. But what do I do Wednesday, June 3, 2015 by lilly 5th grade math 16 times 1=16 what property is this 1 times 18 =18 what property is this Wednesday, June 3, 2015 by Mythreyee 5th grade math What is he price of a hamburger and cheeseburger at this restaurant h+3c=$9.00 2h+c=$5.50 Wednesday, June 3, 2015 by Mythreyee math An airplane is flying from Montreal to Vancouver. The wind is blowing from the west at 60km/hour. The airplane flies at an airspeed of 750km/h and must stay on a heading of 65 degrees west of north. A) what heading should the pilot take to compensate for the wind? B) what is ... Wednesday, June 3, 2015 by lilly math 2 trains leave metropolos at same, one going south 50 mph the other east 40 mph. How far apart will they be at 3 hours Wednesday, June 3, 2015 by ken Math (Grade 9) A submarine travels 16km/h on the surface of the water and 10km/h under water. The sub covers 138km in 12 hours. I) Write 2 equations to represent; (Define Variables) total number of hours: Total distance travelled. II) Use equations to calculate the spent on the surface and ... Wednesday, June 3, 2015 by Nick Math 7 how high is a tree that casts a 25 foot shadow at the same time a 6 foot pole casts a 10 foot shadow? Please help! I don't understand how to solve any problem like this!! Wednesday, June 3, 2015 by Jade Consumer math Ed borrowed 1,500 for 4 months at 13.5 %. How much did he have to pay back under an add-on plan? Wednesday, June 3, 2015 by Caleb Math Which of the following equations gives the relationship between S and T in the table below? S 1 2 3 4 5 6 T 1 4 7 10 13 16 How do you find equations again? Wednesday, June 3, 2015 by Anna Math 1. Cate went on a trip of 120 miles at x miles per hour. Returned over same route at 5miles/hour faster than previous rate.If time for return trip was one-third of an hour less than time for the outgoing trip,how do you find x? (Set up the chart right, and used the time column... Wednesday, June 3, 2015 by Anna Math I an taking the SAT this week and I am so screwed. I keep getting these types(and ratio and probability- tips?) of questions wrong on practices. I basically set up a chart for d(distance/amount of sth), v(speed/rate), and t(time) and try to fill it out. I usually fill it out(... Wednesday, June 3, 2015 by Bethany Math Alex plans to make a mosaic for his art class. How many one inch square tiles will he need to cover a surface that is 2 feet by 3 feet? Wednesday, June 3, 2015 by Anonymous math Sara brought a total of 8 nails at ace hardware . she purchased both 6 penny nails and 10 penny nails . she brought 2 more 6 penny nails then she did 10 penny nails . she had a total of 8 mails. How many 6 penny and 10 penny nails did sara purchase Wednesday, June 3, 2015 by sassy math what is the percent that someone would be addicted to alcohol if they were drunk fives times a month? Wednesday, June 3, 2015 by Anonymous math help Solve for x and y simultaneously x-3 2y=0 2y^2 3x^2 4xy=9 Wednesday, June 3, 2015 by vest Math A company manufactures x units of Product A and y units of Product B, on two machines, I and II. It has been determined that the company will realize a profit of$3/unit of Product A and a profit of $6/unit of Product B. To manufacture a unit of Product A requires 6 min on ... Wednesday, June 3, 2015 by Jay Math A financier plans to invest up to$500,000 in two projects. Project A yields a return of 11% on the investment of x dollars, whereas Project B yields a return of 17% on the investment of y dollars. Because the investment in Project B is riskier than the investment in Project A...
Wednesday, June 3, 2015 by Jay

math
how does 3x(x-4)+5=12 = x=6+sq rt 57-3 or x=6-sq rt 57/3
Wednesday, June 3, 2015 by charlie

math
0,3,8,15,24 determine the nth for the number pattern
Wednesday, June 3, 2015 by vest

math
Tyson talked in 150 customer on his shift yesterday. Of those, 20% resulted in a successful upsell of additional purchased. If Tyson makes a \$ 6.00 commission on top of the regular salary of each successful upsell that he make. how much commission did he make yesterday?
Wednesday, June 3, 2015 by cindy

Math
15 and 16 multiply. 15. (9 * 10^6)(7 * 10^5) 16. (1.1 * 10-5)(3 * 10-2)
Wednesday, June 3, 2015 by Alina

Math
In the expression -9x-2x^2+7 what is the coefficient of x A. -9 B. -2 C. 7 D. 9
Wednesday, June 3, 2015 by Alina

math
1,5,11,19 (a) calculate next two patterns (b) calculate the nth term of the pattern (c)which term of the pattern is equal to 2549. thanks a lot
Wednesday, June 3, 2015 by help

Math
Evaluate the following expressions: a. 11^0 b. 11^2 / 11^2 c. are the answers to parts a and b the same? Explain why or why not?
Wednesday, June 3, 2015 by Alina

math
3x^2 kx-k=3x prove that this equation has rational roots for all ration values of K thanks
Wednesday, June 3, 2015 by kem

Math
For all x is not equal to 0 and y is not equal to 0, (2x^-3y^4)^3 / (4xy)^2 = ? F. y^10 / 2 G. 2y^10 / x^10 H. y^10 / 2x^11 J. y^3 / 2x^2 K. y^9 / 4x^4
Wednesday, June 3, 2015 by Anonymous

sat math
if NR+RN=ABC where A,B,C,N and R are digits what is maximum value of B+C?
Wednesday, June 3, 2015 by Ram Sah

Math
If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?
Wednesday, June 3, 2015 by Jay

math
Between which two rational numbers is located?
Wednesday, June 3, 2015 by Anonymous

Math
if height is equal to 2.20m at exactly 9am, and then the height is equal to 1.7m at exactly 10am. At what approximate time will the height be equal to 1.71m
Wednesday, June 3, 2015 by Hannah

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