Sunday
August 30, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

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

Math
Write the expression in terms of costheta and then simplify. cos^4theta - sin^4theta + sin^2theta Ans: cos^4 θ - 1 - cos^4 θ + 1 - cos^2 θ = -cos^2 θ
Tuesday, June 2, 2015 by Anonymous

Math
For the depth of water on Friday, 16 January 1998, the periodic function is: y = 1.05 sin 2pix/11.72 + 1.55 1.05 is the 'a' value 2pi/11.72 is the 'b' value 1.55 is the 'd' value we were told not to take into consideration the 'c' value in our ...
Tuesday, June 2, 2015 by Madi

Math
how many different ways can 8 people be seated in 3 chairs
Tuesday, June 2, 2015 by M

Math
Can -x^2 - 5x + 4 be written as x^2 + 5x - 4?
Tuesday, June 2, 2015 by Anonymous

Math
Write a possible explicit rule for the nth term of the sequence, then use it to find the 20th term. 5, -10, 20, -40, 80, -160.... Ans: a(n) = 5(-2)^n - 1 20th term: -2621440
Tuesday, June 2, 2015 by Anonymous

Math
Question: over the last year, stormy and her 2 sisters saved money for their family trip this summer. They are now getting right to know how much they can spend on each of the 15 days of their trip. If they saved a total of $420, what is the total amount all three girls can ...
Tuesday, June 2, 2015 by Abbey

Math
Determine whether the polygons with the given vertices are similar. Support your answer by describing a transformation. V(3,2) W(8,2) X(1,5) R(6,4) S(16,4) T(3,15) I think they are not similar because V and W are dilated by 2 and X is dilated by 3. They need to be dilated by ...
Tuesday, June 2, 2015 by Anonymous

math
If the path from park rangers station to camp ground is 0.55 miles determine and state to the nearest hundred of a mile.
Tuesday, June 2, 2015 by gary

Math
A figure in the coordinate plane is reflected across the line y = x + 1 and then across the line y = x + 3. Find a translation vector that is equivalent to the composition of the reflections. Write the vector in component form. I know the answer is (-2, 2), but how?
Tuesday, June 2, 2015 by Anonymous

math algabra
The area of the living room is 162 ft2. What are the length and width if the width is twice the length
Tuesday, June 2, 2015 by brittany

Math
Has anyone taken the "Exploring Scatter Plots" quiz?
Tuesday, June 2, 2015 by IF MRS.ANDRE IS YOUR MATH TEACHER PLZ HELP

math
Imagine you are the owner of a pizza shop that offers three different types of crusts, seven different toppings, and three different cheeses. Create an advertisement for your shop with three lists: one for crusts, another for toppings, and a third for cheeses. In your ...
Tuesday, June 2, 2015 by amanda

Math
Does anybody have Mrs. Andres as their Math teacher?
Tuesday, June 2, 2015 by NEED HELP IN MATH Connections Academy

Math help please
Which hill described in the table is the steepest? Explain. Street|Horizontal distance|vertical rise Dixie |80 |40 hill | Bell |80 |20 hill | | Liberty|80 |60 hill | | A)Bell Hill;it rises 1 foot for every 4 feet of horizontal travel. B)Dixie Hill; it rises 2 feet for every 1 ...
Tuesday, June 2, 2015 by UMACBLACKBELT

Math
I need help with this question: Express below function in terms of f(x) if f(x)= x^2 y= 3(-4x-2)^2 + 5
Tuesday, June 2, 2015 by Anonymous

Math
I need help with this question. Suppose that f(0)= 0 , f(1)= 4, f(2)= 4, f(3)= 10, f(4)= 16 and g(x) = -f(2x+3). Find any 5 points on g(x).
Tuesday, June 2, 2015 by Anonymous

Math
What is the value of the function when x = 3? x −2 −1 1 3 4 y 4 3 6 5 8
Tuesday, June 2, 2015 by Sara

math
144^14/144^2 A.144^16*** B.144^12
Tuesday, June 2, 2015 by Anonymous

Math help please
these questions are for practice, they dont count as points, but i dont understand how to solve them.. can someone please explain them to me?? which function rule represents the data in the table below? input|1| 2| 3| 4|5 output|9|15|21|27|33 A)y=4+5x B)y=3+6x C)y=5+4x D)y=6+...
Tuesday, June 2, 2015 by UMACBLACKBELT

Math
1. What percent of people chose the Ferris wheel or the carousel as their favorite ride? Other 19% Ferris wheel 18% Carousel 25% Roller coaster 38% A. 25% B. 37% C. 43% < -- C? D. 56% 2. Two hundred people were surveyed about their favorite ride at an amusement park. The ...
Tuesday, June 2, 2015 by Nyla

Math
a news carrier has $7.00 in change he has 8 more quarters than dimes and five times as many nickels than quarters.how many coins of each type does he have ?
Tuesday, June 2, 2015 by Anonymous

math
use inductive reasoning to determine the units digit of the number 2^44 the unit digit of 2^44 is_____ powers of 2- 2^1=2 2^2=4 2^3=8 2^4=16 and so on that last one they have is 2^12 so 2^44 would be 1.7592188?
Tuesday, June 2, 2015 by Jessica

Math
a turtle is at the bottom of a 11 foot well. each day it crawls up 5 feet, but each night it slips back 3 feet. after how many days will the turtle reach the top of the well? the turtle will reach the top of the well after ___ days THANK YOU
Tuesday, June 2, 2015 by Jessica

Math
PLease explain how to do this Add or Subtract (m^2-m+3)+(m-1)
Tuesday, June 2, 2015 by Anna

math
0,3,8,15,24 how do i calculate the tenth term
Tuesday, June 2, 2015 by kem

Math
Which angle measure is closest to 8 radians? A. 100 degs B. 120 degs C. 150 degs D. 360 degs
Tuesday, June 2, 2015 by Anonymous

Math
The point (-4, 6) is on the terminal side of theta in standard position. Which is the cosine of theta? 1. - 2sqrt13/13 2. -2/13 3. 2/13 4. 2sqrt13/13 I think it is one of the negative ones, but I'm not sure of which.
Tuesday, June 2, 2015 by Anonymous

math
you decide to dye your hair in various colors. If you die 1/3 of it blue , 1/4 pink and 1/4 of it black how much of your original hair is left?
Monday, June 1, 2015 by Alisha

Math
Lily made 3 pounds of cloe slaw for a picnic .Each serving of cole slaw is 1/8 pound.How many 1/8 pounds servings of Coles slaw are there ?
Monday, June 1, 2015 by Mo

math
1. (9m + 6) + (–5m – 6) 4m + 12 14m + 12 14m – 12 4m 2. (3r^2 + 7r + 1) + (4r^2 – 8r – 2) 7r2 + 15r – 1 7r2 – r – 1 7r2 – 15r – 3 –r2 – r – 1 3. (6h + 1) – (9h + 4) –3h – 3 15h – 5 –3h + ...
Monday, June 1, 2015 by alyssa

Math
I have used this site on a number of occasions and i never receive an answer. I am just looking for guidance. Willing to work through problem
Monday, June 1, 2015 by Shawn

Math
Angela wants to retile the backsplash in the kitchen using 4in. by 4in. tiles. What is the area of each tole in square feet?
Monday, June 1, 2015 by Anonymous

MATH URGENT
find the average rate of change between f(-4) and f(-1) in the function f(x)= x^2+2x-8
Monday, June 1, 2015 by tom

Math
12y- 9 = 2 + 5(y+2). Solve.
Monday, June 1, 2015 by Rice

Math: 5th Grade
A florist had an equal number of red and yellow tulips. She sold 624 red tulips. Then she had 4 times as many yellow tulips as red tulips. How many tulips did she start with? You must use a bar model to solve this problem.
Monday, June 1, 2015 by Alex

Math
I need to find the answer to this brain teaser. Mcnisens sells mcnuggets in packages of seven, eleven, or thirty. What is the largest number of pieces that yoh cannot order from mcnisens. I need it as a keyword for a playfair cipher. I have tried forty nine by adding them ...
Monday, June 1, 2015 by Shawn

Math
Solve the equation. 10v/11+10= 8-7).The 10v is over the number 11.
Monday, June 1, 2015 by J.J.

Math
The data below represent the ages of people working at a store. 18, 26, 19, 25, 19, 23, 31, 22, 19, 18, 20 What is the first quartile of these ages? 19?
Monday, June 1, 2015 by Gigi

math
kaya brings her sister a stick to hold up a bird feeder. her sister says that she needs a stick that is 5/8 times as long as the stick kaya brought to her. kaya finds a stick that is longer than her first stick.
Monday, June 1, 2015 by autumn

math
A 110lb woman is started on a nitroglycerin IV drip. The order is to administer the Nitro at mcg/min. The pharmacy sends a 250 ml IV container with 25 mg of nitro added to the container. What is the flow rate in ml/hr that the IV should run?
Monday, June 1, 2015 by Brian

math
PLACE 8 COUNTERS IN GROUPS OF 4
Monday, June 1, 2015 by amelia

math
How many mls of 45% dextrose and 15% dextrose do you need to make 780 mls of 35% dextrose
Monday, June 1, 2015 by Brian

Math
How many real number solutions does the equation have? y=3x^2-5x-5 A)one solution B)two solutions C)no solutions D)infinitely many solutions I can't figure this question out. Any help would be amazing.
Monday, June 1, 2015 by Sasha

Math (check answers)
Since the opening night, attendance at Play A has increased steadily, while attendance at Play B first rose and then fell. Equations modeling the daily attendance y at each play are shown below, where x is the number of days since the opening night. On what day(S) was the ...
Monday, June 1, 2015 by Sasha

Math (check answers)
1)Identify the sampling method. You want to determine the number of text messages students at your school send in a month. You go to the cafeteria and randomly ask students as they come out of the lunch line. A)Random*** B)Systematic C)Stratified D)None of these. Would the ...
Monday, June 1, 2015 by Sasha

Math (check answers)
1)What is the simplified form of the expression? 5d^6*d^-12? A)5d^-72 B)6d^-72 C)5d^-6**** D)6d^-6 I think that the answer is C. If anyone could tell me if I am correct that would be great.
Monday, June 1, 2015 by Sasha

Math
What is the volume of the right prism? 15in 17in 10in 8in a. 1200 in3 b. 600 in3 c. 400 in3 d. 50 in3 What is the circumference of the circle? Use pie = 3.14. Round your answer to the nearest tenth of a centimeter. 17 cm A.20.1 cm B. 26.7 cm C.34.0 cm D. 53.4 cm Can someone ...
Monday, June 1, 2015 by Gigi

math
A right cylinder has a diameter of 30 mm and a height of 30 mm, as shown. What is the volume of the cylinder? a. 27,000 mm3 b. 21,195 mm3 c. 2826 mm3 c. 1413 mm3 How do I do this?
Monday, June 1, 2015 by Gigi

math
8! / 4! = 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 = 40320 1 x 2 x 3 x 4 = 24 40,320 / 24 = 1680 A.1680 <--- B.336 C. 24 D.2 Am I correct
Monday, June 1, 2015 by Gigi

math
Ms. Washington has 18 students in her class. She wants to send 3 of her students to pick up books for the class. How many combinations of students can she choose? 816 54 306 4896 I'm not sure if its A?
Monday, June 1, 2015 by Gigi

Math
A jar contains 14 nickels, 10 dimes, 6 quarters, and 22 pennies. A coin is chosen at random from the jar. What is the probability that the coin chosen is a dime? Option A: 5/21 Option B: 1/21 Option C: 5/26 Option D: 1/26
Monday, June 1, 2015 by Gigi

Math
If f(x) = 0.5(2 x), what is the value of f(2)? A. 0 B. 0.5 C. 2 D. 4.5 please help me.
Monday, June 1, 2015 by Gigi

Math
3. A fish and game warden captures and tags 66 deer in a local forest. A month later he captures 100 deer and that 17 of them are tagged. Estimate the actual number of deer in the forest. A) 149 B)1,022 C) 578 D) 389*** 4. Lucy wants to find out the number of frogs in a pond ...
Monday, June 1, 2015 by Not giving my name just so Connexus cant find me

math
How many mls of 55% Dextrsoe and water do you nee to make 980 mls of 27.5 Dextrose? No clue on what to do.
Monday, June 1, 2015 by Brian

Math Algebra 1111
If the domain of a function F is the set of all real numbers and the domain of a function G is the set of all real numbers, under what circumstances do (F+G)(x) and (F/G)(x) have different domains? Whenever G(x) = 0 then the domains would differ. For example, if F(x) =x+2 and ...
Monday, June 1, 2015 by GNTC

Math
Austin and Tamara each completed the square of the quadratic equation 0=3x square - 15x + 6 Austin 0=3(x-5/2) square-51/4 Tamara 0=(x-5/2)square-17/4 Who is correct and show why
Monday, June 1, 2015 by Elijah

math
If 4 is subtracted from ones digit of two digit number and 4 is added to tens digit the resulting no. Is doubled. Find the number
Monday, June 1, 2015 by aaryan

Math
Create a finite-state machine which accepts strings whose characters are in {a, b, c} and produce output strings of T s and F s. The machine outputs a T once the character pair ab (the characters must be adjacent) is encountered in the string. Before this occurrence, it should...
Monday, June 1, 2015 by Excel

Math
simplify: cos(sin^-1(x)) Can someone please show a step by step of how to do this.
Monday, June 1, 2015 by Galagan

Math
prove: sec^2(x)=1+tan^2(x)
Monday, June 1, 2015 by Alex

DISCRETE MATH
We have a relation R on Z+ defined as follows: mRn if and only if m|n. Determine the set B = {n ∈ Z|52Rn}. Thanks
Monday, June 1, 2015 by Anonymous

Math
Can someone please help me with piecewise functions. I know what they are but when it gets to advanced i have ttrouble. s(x)= /x-2/ + /x-3/ + /x+1/ (/ / = 'modulus') Write as a piecewise defined function. Have no idea tbh. Thanks
Monday, June 1, 2015 by Alex

lotto math equation
winning85.40.51.26.2.machine 74.37.50.38.53.what will be first fivenumbers
Monday, June 1, 2015 by yunmuh

DISCRETE MATH
We have a relation R on Z+ defined as follows: mRn if and only if m|n. a. Explain why the relation R is not a function. b. Determine the set A = {m ∈ Z|mR52} and give its cardinality |A|. c. Determine the set B = {n ∈ Z|52Rn}. d. Indicate whether A ∩ B = &#...
Sunday, May 31, 2015 by Anonymous

8th grade math
A rubber ball loses 30% of its height each A rubber ball loses 30% of its height with each bounce How high is the first bounce if the ball is dropped from a height of 500 cm?
Sunday, May 31, 2015 by Carlos

Math
Suppose you have a mean standardized score of 1500 points with a standard deviation of 150 points. This data is normally distributed. What is the z-score of 1600 points? 0.75 0.5 0.67 0.32
Sunday, May 31, 2015 by Destiny

Math
The time required to finish a test in normally distributed with a mean of 40 minutes and a standard deviation of 8 minutes. What is the probability that a student chosen at random will finish the test between 24 and 48 minutes? 82% 2% 84% 16%
Sunday, May 31, 2015 by Destiny

Math
Christine's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Christine $5.85 per pound, and type B coffee costs $4.40 per pound. This month, Christine made 174 pounds of the blend, for a total cost of $906.25. How many pounds of type ...
Sunday, May 31, 2015 by John

Math
This is a question regarding quadratic equations. I think I have to use the quadratic formula but I'm not sure and because the question provides the base I think I'm wrong. Here is the question|: During a hurricane, parabolic waves on the ocean can exceed a height of ...
Sunday, May 31, 2015 by Brady

DISCRETE MATH
Let Z 5 be the relation of congruence modulo5. If 1 ≤ m, n ≤ 5,we define the product of two classes as [m][n] = [mn]. Explain why [3][4] = [2]. I know 3 x 4 = 12. 5 mod 12 = 2. but i don't know how to explain it. Help with the explanation please. Thanks
Sunday, May 31, 2015 by Anonymous

DISCRETE MATH
Let Z 5 be the relation of congruence modulo5. If 1 ≤ m, n ≤ 5,we define the product of two classes as [m][n] = [mn]. Explain why [3][4] = [2]. Thanks
Sunday, May 31, 2015 by Anonymous

Math
you have 1/2 of a brownie. You eat 3/4 of what you have , what fraction of the brownie did you eat?
Sunday, May 31, 2015 by Alisha

Math
A hot air balloon with a height of 120m is directly over a bridge that is 313m from the balloon's landing point. The navigator finds the angle of depression to the landing point. Find the angle of depression.
Sunday, May 31, 2015 by Shawn

Math
What is the maximum volume of a cone that would fit in the box with h=3cm, l=6cm, and w=3cm? how do i do this step by step
Sunday, May 31, 2015 by Albert Einstein

math
What number is the sum of 8 numbers whose average is 13
Sunday, May 31, 2015 by lily

Math
Hello! Could someone please take a look at the problem below and let me know if I made mistakes in simplifying the given equation? I'm quite certain that I did make a mistake somewhere because the original equation and its simplified form give different graphs when plotted...
Sunday, May 31, 2015 by Constantine

Math (Statistics)
Without calculating values of z, tell which of these sample means will have the most extreme standardized score and which will have the least extreme standardized score. 40, 30, 25, 20.
Sunday, May 31, 2015 by Debbie

math
What is the solution to the following equation? 3x(x-4)+5=12
Sunday, May 31, 2015 by charlie

math
find two irrational numbers lying between root of 2 and root of 3
Sunday, May 31, 2015 by vikash goyal

math
find a and b for the following:- 1).(root of 2+root of 3 / 3 root of 2 - 2 root of 3) = a+b root of 6 2). {(root of 5 - 2/root of 5+2)-(root of 5+2/root of 5 - 2)} = a+b root of 5
Sunday, May 31, 2015 by vikash goyal

Math
The surface area of this hemisphere is 1062 cm^2. what is its radius? please help me calculate this step by step
Sunday, May 31, 2015 by Albert Einstein

Math
Find the 100th term in the sequence 77, 71, 65, 59 How do you go about doing this question without the need to list them all out?
Saturday, May 30, 2015 by Maria

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