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February 10, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

math
85 is 40% of what number
Friday, December 25, 2015 by e

math
game board 23 1/2 inches on all 4 sides= what will be the size of 64 squares on the board=
Friday, December 25, 2015 by timothy

Math
l=15m.b=6m.h=5dm.volume of the cuboid
Thursday, December 24, 2015 by Vishal

Math
I want know every single thing about equating coefficient with the example of real fraction ..
Thursday, December 24, 2015 by Akhter

Math
400 people were surveyed in which they were asked to identify the TV channel on which they preferred to watch the evening news. WWCN: 41% WANR: 22% How many more people preferred WWCN than WANR? A. 164 B. 76 C. 236 D. 68 I Believe it is B, Because i did 0.41 * 400 and got 164...
Thursday, December 24, 2015 by Jocelynn

Math
A heat exchanger is bought by a company for $180,000. It is considered to depreciate over 10 years to a scrap value of $10,000. Assuming a linear model for depreciation, write the equation of its value, V (in dollars), when t years have elapsed after the purchase (t < or ...
Thursday, December 24, 2015 by casey

math
Find the rate of change between the two points (4, 36) and (8,108) and give the unit of measure. x is measured in square yards. y is measured in dollars. I know how to find the rate of change but I have no idea what they mean by "unit of measure." How do you find that?
Thursday, December 24, 2015 by casey

Math
A stock investor has $150,000 to invest in two stocks. APC Inc. sells for $39.80 per share and Unified Laboratories (UL) sells for $49.70 per share. Write an inequality that restricts an investment of x shares of APC, Inc. and y shares of UL.
Thursday, December 24, 2015 by Anonymous

Math
What is bacterial growth formula?
Wednesday, December 23, 2015 by BOB

Math
Every two-digit number whose units digit is three times its tens digits
Wednesday, December 23, 2015 by Elizabeth

MATH Please help!
A right triangle has an area of 13^2. The dimensions of the triangle are increased by a scale factor of three. What is the area of the new triangle? a. 39^2 b. 169^2 c. 117^2 d. 142^2 i think the answer is A but i am not sure! any help is appreciated
Wednesday, December 23, 2015 by dany

Math
What is the equation x = y + z solved for z?
Wednesday, December 23, 2015 by han

Math
400 exercise books are arranged into 3 piles.The first has 5 more books than the 2nd pile.The number of books in the second pile is twice the number of books in the third pile.How many books are there in the third pile??
Wednesday, December 23, 2015 by Paul

Math
I don't understand how the derivative of tanx/x equals sec^2x/x. I got sec^2x/(-x^2) by the quotient rule. Can someone explain to me step by step please?
Wednesday, December 23, 2015 by Brigid

Math
Find an equation of the line tangent to the graph of y=sinx+3 at X=pi. The answer key says y=-X+Pi+3 But I got y=-X+5. Where did the Pi even come from?
Wednesday, December 23, 2015 by Brigid

Math
So I found the derivative of an expression and I cannot figure out how to simplify the final answer into the desired form. I got -csc^2(X)/(1+cotx)^2. Now how do I simplify this into -1/(sinx+cosx)^2. Help, it's killing me ahha. Thanks!
Wednesday, December 23, 2015 by Beth

Math
7. Determine which ratio forms a proportion with 7/2 by finding a common multiplier 1.35/8* 2. 70/20 3. 28/10 4. 70/8
Tuesday, December 22, 2015 by ilovealpaca

Math
How can you use the Pythagorean Theorem to find out how many triangles you'll need for a pennant flag?
Tuesday, December 22, 2015 by Anna B.

math
. Use words to describe a reasonable domain and range for the number of people painting a house and the time required to finish the job. Explain your answer.
Tuesday, December 22, 2015 by jordan

math
On the package of candy coated chocolates it states the box contains 147 grams. In reality, the mass can vary between 145 g and 150 g. You may find between 63 and 69 pieces of candy in any given box. Explain which variable represents the domain and range. State the domain and ...
Tuesday, December 22, 2015 by jordan

math
Determine the solution of the following systems of linear equations using elimination. Briefly explain your work. 3x +2y = 19 2x – 3y = -6
Tuesday, December 22, 2015 by jordan

Math
Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employer purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?
Tuesday, December 22, 2015 by Bte

Math
If a pool is filling up 5 3/5 every 7/5 of an hour, how many gallons does the pool fill up per hour? I did y=7/5x. Is that correct?
Tuesday, December 22, 2015 by Julia Boccia

math PLEASE HELP
Can someone please explain the Pythagorean Theorem to me?! I seriously don't get it.
Tuesday, December 22, 2015 by Anon//

Math
Seth currently has $160 in his account and he deposit eight dollars in it every week. Keira has $270 in her bank account and withdraws three dollars from it every week. Write a equation to determine the number of weeks it would take seth and Keira to have the same amount of ...
Tuesday, December 22, 2015 by Tami

MATH HELP
Sally has only nickels and dimes in her money box. She knows that she has less than $20 in the box. Let x represent the number of nickels in the box and y represent the number of dimes in the box. Which of the following statements best describes the steps to graph the solution...
Tuesday, December 22, 2015 by Oscar

Math
if 46% of a property is worth $92,000, how much would 100% be worth?
Tuesday, December 22, 2015 by Anonymous

Math
The temperature, throughout the year, in a particular town can be graphed using trigonometric functions. On July 24th, the hottest day of the year, the temperature is 27 degrees Celsius. On Jan. 24th, the coldest day of the year, the temperature is -11 degrees Celsius. ...
Tuesday, December 22, 2015 by Chris

Algebra 2 (Math)
Divide 3x^3 + 3x^2 + 2x – 2 by x + 3 using long division. Check my answer please. 3x^2 – 6x + 20 3x^2 + 12x – 16 3x^2 + 12x – 16, R 58 3x^2 – 6x + 20, R -62 (I think that it's this one)
Tuesday, December 22, 2015 by Jack

Math
The Perimeter of a right angled triangle is 40 CM. Find the area of the right angled triangle.
Tuesday, December 22, 2015 by Debasish

7TH GRADE MATH
2.12 MILES/27 HOURS = 4 MILES / H HOURS (1 point) 28 12 9* 18
Tuesday, December 22, 2015 by ilovealpaca

math
Ok So how do you solve 32b+55
Tuesday, December 22, 2015 by Courtney

math
Two towns that are 52.5 km apart are 5 cm apart on a map. What is the scale of the map?
Tuesday, December 22, 2015 by e

math
Los Angeles is about 385 miles from San Francisco. How far apart would the cities be on a map with a scale of 1 in. = 25 mi. ?
Tuesday, December 22, 2015 by e

math
in the scale drawing, each side is .38cm long. What is the perimeter of the actual object?
Tuesday, December 22, 2015 by e

math
a 12 foot basketball hoop has a shadow 9.6ft long.How long is the shadow of a 6ft adult standing next to the basketball hoop?
Tuesday, December 22, 2015 by e

Math
If military time is 0145, what time is it on a regular clock? A. 12:45 A.M. B. 1:45 A.M. C. 12:45 P.M. D. 1:45 P.M. I believe it is B. but please correct me if i'm wrong
Tuesday, December 22, 2015 by Jocelynn

math
You put $1,000 into a savings account today that offers a 5% APR with semi-annual compounding (i.e., two times per year).
Tuesday, December 22, 2015 by chris

math
$400,000 for 30-years at a fixed APR of 3.87%. The loan payments are monthly and interest is compounded monthly.
Monday, December 21, 2015 by chris

statistics
I have a statistics math problem. if someone could answer. "A basketball player makes 70% of free throws. he throws 15 free shots. what is the probability that the basketball player makes 7 or more free shots inside basket."
Monday, December 21, 2015 by jennifer

math help pls pls
Maya had $27. She spent all the money on buying 3 burgers for $x each and 2 sandwiches for $y each. If Maya had bought 2 burgers and 1 sandwich, she would have been left with $11. A student concluded that the price of each burger is $5 and the price of each sandwich is $6. ...
Monday, December 21, 2015 by Oscar

math help pls pls
Two systems of equations are shown below: System A 6x + y = 2 −x − y = −3 System B 2x − 3y = −10 −x − y = −3 Which of the following statements is correct about the two systems of equations? The value of x for System B will be 4 ...
Monday, December 21, 2015 by Oscar

MATH HELP
Solve the following system of equations: x − 2y = 6 2x − 4y = 10 Infinitely many solutions No solutions (0, 0) (6, 10) is it A
Monday, December 21, 2015 by Oscar

Math
what is 19/6 as a mixed number
Monday, December 21, 2015 by Miazja booker

math
order least to greatest 1/4,15%,0.08,93% thank you
Monday, December 21, 2015 by awesomeguy123

math
how do you solve 3x+11
Monday, December 21, 2015 by Courtney

Math
For a stat class the mean of the midterm is 75 with a standard deviation of 7. What percentage of students scored between 67 and 83
Monday, December 21, 2015 by Chris

Math 8th grade
Solve the equation. 1. 4-5 __ = 1 I cannot figure this out. 3
Monday, December 21, 2015 by Help needed

math
Aryan has to travel certain distance from his home at a speed of 5 kilometre hours on his way back to home the speed decreases to 3 kilo metre per hour find his average speed.
Monday, December 21, 2015 by Balram

math
select the expression equivalent to (-13x-15)-(-9x+16)
Monday, December 21, 2015 by doudeleine

Math
Given that AB(vector)= (-9,4), calculate the length of AB(vector), leaving your answer correct to 3 significant figures.
Monday, December 21, 2015 by Christopher

Math
$10,000 invested. part at 3% and part at 6% for a period of 1 year. how much was invested in each account if the interest earned in the 6% account was $357 greater than the 3% account?
Sunday, December 20, 2015 by Andrew

math
Determine the solution of the following systems of linear equations using elimination. 2x + 3y = 7 x – 2y – 4 = 0
Sunday, December 20, 2015 by jordan

math
. A drama club was performed in an auditorium that has a capacity of 540. Students had to pay $7 a ticket and adults were charged $10. On opening night, the auditorium was full and they brought in $4764 in ticket sales. Write a system of equations to model this situation and ...
Sunday, December 20, 2015 by jordan

Math
For every 8 chin-ups Doug did during the physical fitness test, Adam did 3. Doug was able to do 15 more chin-ups than Adam. How may chin-ups did Adam do?
Sunday, December 20, 2015 by John Berry

math
Determine the solution of the following systems of linear equations using elimination. 2x + 3y = 7 x – 2y – 4 = 0
Sunday, December 20, 2015 by jordan

Math
For every 4 jumping jacks Lauren did during the physical fitness test, Jason did 3. Lauren was able to do 10 more jumping jacks than Jason. How many jumping jacks did Jason do?
Sunday, December 20, 2015 by John Berry

math
a Midwestern music competition awarded 28 ribbons. The number of blue ribbons awarded was 1 less then the number of white ribbons. The number of red ribbons was 2 more then the number of white ribbons. How many of each kind of ribbons was awarded?
Sunday, December 20, 2015 by Kelley

math help pls pls
A system of equations is shown below: x + y = 3 2x – y = 6 The x-coordinate of the solution to this system of equations is _____.
Sunday, December 20, 2015 by Oscar

MATH HELP
Which of the following statements best describes the graph of 4x − y = 1? It is a straight line joining the points (0, −1), (1, 3), and (−1, −5). It is a straight line joining the points (4, −3), (−1, 2), and (−4, 5). It is a curve ...
Sunday, December 20, 2015 by Oscar

MATH HELP
Sam and Harry are family. Sam is currently is three times Harry's age. Sam's age is also 10 more than twice Harry's age. What are their current ages? Sam is 24 years old, and Harry is 8 years old. Sam is 39 years old, and Harry is 13 years old. Sam is 27 years old...
Sunday, December 20, 2015 by Oscar

math
dwight made 13 shots at the basketball game on friday night and made a total of 30 points. she scored 5 more two pointers than three pointers. how many of each type of baskets did she make? Also make equations to help figure it out.
Sunday, December 20, 2015 by bob

math
By selling some goods at Rs 31, a salesman loses 7% on his output. Find the % profit or loss, when he sells the same at Rs 35? Pls help
Sunday, December 20, 2015 by manish

dzwaboni sec school and am doing this subject(math literacy, history, geography,life science, life orientation, English and tshivenda
Am in grade 10 and I do maths literacy.so what percentage should I get in maths literacy to do law degree?
Sunday, December 20, 2015 by thembuluwo

math
How much % above the cost price should a shopkeeper mark his good so that after allowing a discount of 10%, he should gain 26%? The diameter of a circle is 10cm. If the distance of a chord from the centre of the circle be 4cm then , find the length of the chord. Pls hlp!
Sunday, December 20, 2015 by rahim

math
in an arithmetic sequence whose first term is 4, the 1st, 3rd and 7th terms form consecutive terms of geometric sequence, find the sum of the first three terms of the arithmetic sequence
Sunday, December 20, 2015 by selina

Math
Which one of the following is an example of a repeating decimal? A. 0.6666666(W/ repeating sign) B. 1.234545 C. 0.123321 D. 6.787878(W/ repeating sign) I think its A but D is also repeating. If I'm wrong please elaborate
Saturday, December 19, 2015 by Jocelynn

Math
The layer of gold coating on a ring should be 0.03 millimeters thick when the ring is completed. A coating of 0.021 millimeters has already been applied. How many more millimeters of gold coating must be added to finish the ring? A. 0.18 millimeters B. 0.09 millimeters C. 0....
Saturday, December 19, 2015 by Jocelynn

Math
What is the difference between 126 1/4 and 78 2/3? A. 57 7/12 B. 48 1/3 C. 47 7/12 D. 58 5/12 I think it's C , but i really don't understand fractions, if i'm wrong could you possibly elaborate what i did wrong and how to fix it
Saturday, December 19, 2015 by Jocelynn

Math
A railway engine starts shunting wagons by first going 1000 m north of railway station. It reverses and travels 1250 m south and then it again moves 600 m north. Finally moving 800 m south it comes to rest. How far is the engine from the station and in which direction?
Saturday, December 19, 2015 by Gautam Jha

math
Randy’s car can drive 5 miles in 2 minutes. How many miles can he drive in 60 minutes?
Saturday, December 19, 2015 by randa

Math
If x+ay=b, then y equals
Saturday, December 19, 2015 by Mohamed

math
I kind of owe someone a favor :P and I have no idea A candle burns down at the rate of 0.5 inches per hour. The original height of the candle was 9 inches. Part A: Write a list of 6 ordered pairs to show the height of the candle in inches (y) as a function of time in hours (x...
Saturday, December 19, 2015 by plz healep

MATH HELP
Maggie and her friends are each able to recruit a certain number of people each year to sample a product. The number of people per year is represented by the function f(t) = 3(2)t. What does the t represent? How many people were recruited in year 6? t represents the year ...
Saturday, December 19, 2015 by Oscar

math
Annual value of property is $12300. Find the property tax payable for a period of 8 months at a rate of 16%?
Saturday, December 19, 2015 by laiba

Math
Using the distance function s(t) = t2 + 4t + 30, "s" is in feet and "t" is in seconds, find the velocity function, v(t), and acceleration function, a(t).
Saturday, December 19, 2015 by Lena

Math
1.2 kilos of apples cost $3 How much do 2.5 kilos of apples cost ?
Saturday, December 19, 2015 by Basan

Math
Rick works two jobs to pay for college. He tutors for $20 per hour and also works as a bag boy for $7 per hour. Due to his class and study schedule, Rick is only able to work up to 25 hours per week but must earn at least $200 per week. If t represents the number of hours Rick...
Saturday, December 19, 2015 by Oscar

Math
What is the product of 3 2/3 and 14 2/5? A. 54 B. 52 4/5 C. 42 4/5 D. 52 4/15 I did the math and got 42 4/15 what did i do wrong? If i had to guess id say its c or d ):
Saturday, December 19, 2015 by Jocelynn

math
What doea,the c mean when the math problem is 8c = how many pints? I tried 1 2 4 and 16 but don't know what to look for.
Saturday, December 19, 2015 by james

math
The weight of a container completely filled with water is 2.25 kg. The container weighs 0.77 kg when it's 0.2 part is filled with water. Find the weight(in kg) of the container when0.4 part of it is filled with water? Pls help
Saturday, December 19, 2015 by rahim

MATH HELP !!!!!
There are 180 days of school; 40 weeks. You have a six day cycle in your schedule. You have health twice a cycle (2 days out of 6 days in the six day cycle). How many classes of health?
Saturday, December 19, 2015 by Tom

Math
The length of the rectangle is 5 cm longer than its width. If the perimeter is 46 cm, what is the area?
Saturday, December 19, 2015 by Patty

math
im ateacher math ( arabian) want to learn amerecan math
Saturday, December 19, 2015 by hamada

Math
If one root of the equation x^2-px+q=0 is the square of the other, show that p^3-q(3p+1)-q^2=0. Provided q is not equal to 1
Saturday, December 19, 2015 by Skyboy

Math
Prove that if the diffrence between the root of the equation ax^2+bx+c=0 is 1, then a=b^2-a^2/4c
Saturday, December 19, 2015 by Skyboy

Math
May is swimming steadily in a pool. She completes 5 laps in 4 minutes. Joy is also swimming in the same direction and she swims 4 laps in 5 minutes. At 10 AM Joy just head of May. At 10:15 AM, how many times will May pass Joy?
Saturday, December 19, 2015 by Isabelle

Math
3.Belinda wants to invest $1000. The table below shows the value of her investment under two different options for three different years: Number of years 1 2 3 Option 1 (amount in dollars) 1100 1210 1331 Option 2 (amount in dollars) 1100 1200 1300 Part A: What type of function...
Saturday, December 19, 2015 by Daniella

Math
2.The price of products may increase due to inflation and decrease due to depreciation. Derek is studying the change in the price of two products, A and B, over time. The price f(x), in dollars, of product A after x years is represented by the function below: f(x) = 72(1.25)x ...
Saturday, December 19, 2015 by John

Math
1.A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: f(n) = 12(1.03)n Part A: When the scientist concluded his study, the height of the plant was approximately 16.13 ...
Saturday, December 19, 2015 by Blake

Math
Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 3x + 10 y is less than negative 3 over 4 times x minus 1 Part A: Describe the graph of the system, including shading and the types of lines graphed...
Saturday, December 19, 2015 by Riley

Math
Part C: How can you solve the equation 8x = 2x + 2 graphically?
Saturday, December 19, 2015 by Kayla

Math
1.A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: f(n) = 12(1.03)n Part A: When the scientist concluded his study, the height of the plant was approximately 16.13 ...
Saturday, December 19, 2015 by Math student

math
10 years ago simrans mother was 4 times older than her daughter . after 10 years the mother will be twice oder than her daughter . find present age of simran
Saturday, December 19, 2015 by Anonymous

math
The weight of a container completely filled with water is 2.25 kg. The container weighs 0.77 kg when it's 0.2 part is filled with water. Find the weight(in kg) of the container when0.4 part of it is filled with water? ABCD is cyclic quadrilateral, AB is the diameter of the...
Saturday, December 19, 2015 by jyoti

Math
what is the future value of $490 per year for ten years compounded annually at 11%
Friday, December 18, 2015 by Jasmine

Math
What is 1,112,433 rounded to the nearest ten thousand? A. 1,100,000 B. 1,200,000 C. 1,110,000 D. 1,120,000 I think C because the 2 in 112, is the tenth of a thousand, and the 2ond 3 in 433 is the tenth of a hundred and because to round up you have the numbers have to be 5 or ...
Friday, December 18, 2015 by Jocelynn

Math
Explain one way to find the equivlent percent for 4/5
Friday, December 18, 2015 by Shahd alsomairi

Math
-6-7(c+10) A: 64-7c B: -76-7c C: 4-13c D: -16-13c We're suppose to simplify the expression can you help me? i think the answer is B
Friday, December 18, 2015 by Boricua

NEED Math Help ASAP PLZ!!!
I dont know how i got this question wrong. In a direct variation, the constant of proportionality is -3. Which of the following would be its equation? A) y = x - 3 B) -3y = x C) y = -3x D) -3 = xy I put A as my answer... but it says the answer is C! How is C the answer? PLZ ...
Friday, December 18, 2015 by Scarlett

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