Thursday
August 27, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

Math-manipulation of the formula
Make "i" the subject of the formula A=P(1+i)^n
Friday, August 7, 2015 by Nino5

chemistry
suppose that a large volume of 3% hydrogen peroxide decomposes to produce 12mL of oxygen gas in 100 s at 298 K. Estimate how much oxygen gas would be produced by and identical solution in 100s at 308 K hi can you please help me set up this problem, then I can do the math, I ...
Thursday, August 6, 2015 by Chloe

math
The base of the triangle is 17. The other two sides are integers and one of the sides is twice as long as the other. What is the longest possible length of the side of the triangle.
Thursday, August 6, 2015 by Anonymous

math
James purchased a bond for $3200, and ten months later he sold for $3700. What annual rate would he have to earn in a savings compounded monthly, to earn the same money on his investment?
Thursday, August 6, 2015 by jacqueline

math
IT took me a while to learn how to flip flapjacks. In fact, a+1/a=6, then the value of a^2 + 1/a^2 is the number of attempts it took me. How many attempts did it take me? A. 34 B. 35 C. 36 D. 38 I don't know how to do it, I'm assuming that 1 1/a =6, but I'm wrong I...
Thursday, August 6, 2015 by tay

Math
Find the simple interest and the final value of the deposit that earns the given rate for the indicated length of time. Round your answers to the nearest cent. $46,945 earning 8.5% for 22 months A) $6983.07; $53,928.07 B) $7315.60; $54,260.60 C) $7377.07; $54,322.07 D) $7648....
Thursday, August 6, 2015 by Jackie

math
IT took me a while to learn how to flip flapjacks. In fact, a+1/a=6, then the value of a^2 + 1/a^2 is the number of attempts it took me. How many attempts did it take me? A. 34 B. 35 C. 36 D. 38 I don't know how to do it, I'm assuming that 1 1/a =6, but I'm wrong I...
Thursday, August 6, 2015 by tay

math
how many flowers can be planted in a flower bed 13 ft long at 13 inches apart?
Thursday, August 6, 2015 by felix

math
The product of both values of x for which 2003^x^2+2x-35 =1 is A. -2 B. 2 C. -35 D. 35
Thursday, August 6, 2015 by galaxy

math
If 3^a=2 and 7^b=5, then 9^4a * 49^2b = A. 2^4 * 5^2 B. 2^6 * 5^6 C. 2^8 * 5^4 D. 2^4 * 5^8 How can something to a power be smaller than the number and how do I do this?
Thursday, August 6, 2015 by galaxy

math
Only ? different right triangles have leg-lengths √a and √b and hypotenuse-length √2003, where a and b are integers are a>b?0. A. 1001 B. 1002 C. 2002 D. 2003
Thursday, August 6, 2015 by galaxy

math
How many pairs of positive integers (a,c) satisfy a^3+125=c^3? A. 0 B. 1 C. 2 D. 3 How Do i figure this out?
Thursday, August 6, 2015 by galaxy

Math
There is a right triangle named ABC. If AB=2 yards and BC=6 yards, what is the perimeter of triangle ABC? A) 4*square root of 2 yards B) 8 yards C) 8 + 2*square root of 10 D) 8 + 2*square root of 14 E) 28 yards
Thursday, August 6, 2015 by Jenna

math
Martha sold her property for $330,000. If she made a profit of 10%, what was her original cost?
Thursday, August 6, 2015 by Linette

math
An insurances fund invests $70,600 in real estate and earns 14% per year on the investment. How much money is earned per year? Can you please help me i have awnser i out 9884 but it gives 98,840 so that doesnt match? 
Thursday, August 6, 2015 by Jackie

Math
What is the fewest number of 7's that can be added together to make their sum greater than 4000? A) 4001 B) 572 C) 571 D) 470
Thursday, August 6, 2015 by Jenna

Math
In triangle ABC, the measure of angle A is 80 degrees and the measure of angle B is 50 degrees. If the length of AB is 2x - 12 and the length of AC is x - 3, what is the length of AB? A) 15 B) 12 C) 9 D) 6 E) 3
Thursday, August 6, 2015 by Jenna

Math
At 8:00am, the temperature was 60F. By 9:00am, the temperature had dropped 4
Thursday, August 6, 2015 by Missleo

Math
Find the area of a triangle with base of 15 m and altitude of 12 m
Thursday, August 6, 2015 by Dave

math
(tan^2x+1)cot2x=2-sec^2x
Thursday, August 6, 2015 by Anonymous

Math
If there are 12 inches = 1 foot,how many inches are in 8.2 miles
Wednesday, August 5, 2015 by Hailey

Math
If there are 100 centimeters = 1 meter ,how many centimeters are in 1.25 m?
Wednesday, August 5, 2015 by Hailey

Math
The diagonals of a rectangle is 8m longer than it's shorter side. If the area is 60m.sqr., what are its dimentions? Show the solution.
Wednesday, August 5, 2015 by Paps olarte

Math
If there are 100 centimeters = 1 meter ,how many centimeters are in 1.25 m?
Wednesday, August 5, 2015 by Hailey

math
A baseball team played 149 complete games last season. They had 31 fewer wins than losses. How many games did the team win?
Wednesday, August 5, 2015 by jacqueline

Math
The number of seconds in 2 hours equals the number of minutes in how many days?
Wednesday, August 5, 2015 by Jenna

algebra/ math
Solve the problem. Leave the answer in exponential notation. The expression 2^6 x64^t approximates the number of bacteria after t hours. After 1/2 hr, how many bacteria are those? is it 2^6..
Wednesday, August 5, 2015 by jacqueline

Math
How many pairs of parallel edges does a rectangular solid have?
Wednesday, August 5, 2015 by Jenna

Math
A swimming pool 75 ft. long and 30 ft. wide is filled to an average depth of 6 ft. If 7.5 gal occupy 1 cu. ft. the number of gallons the pool contains is:
Wednesday, August 5, 2015 by Anonymous

Math
A circular pizza of radius 8 is cut into 8 equal slices. What is the perimeter of one slice?
Wednesday, August 5, 2015 by Jenna

Math
Mrs. Dana can buy a coat for $187.00 cash or $35.00 down or $15.00 per month for 12 months. The charge for buying on the installment plan is: Also, can you explain what the installment plan is.
Wednesday, August 5, 2015 by Anonymous

math
Each of the following is a factor of x^2 +3x-4 except A. x+4 B. x-1 C. x-4 D. 1
Wednesday, August 5, 2015 by galaxy

fundamentals math
Last year, Maria earned $312 per week. This year, her salary increased to $343 per week. What is the percent of increase?
Wednesday, August 5, 2015 by jacqueline

math
Find the simple interest and the final value of the deposit that earns the given rate for the indicated length of time. Round your answers to the nearest cent. $8439 earning 8% for 1.4 years ?
Wednesday, August 5, 2015 by Alyssa

math
Which of the following is not a true fact about angles? A) The measure of an angle depends on the amount of rotation. B) Angles depend on the length of the rays that form the angle. C) All right angles are equal in measure. D) All straight angles are equal in measure. Is it A?
Wednesday, August 5, 2015 by Jenna

math
The cost C in dollars of having an electrician come to your house to do a repair job in h hours if he charges $16 for coming to the house and $30 for each hour.
Wednesday, August 5, 2015 by Alyssa

Math
The complement of the supplement of an obtuse angle is always: A) an acute angle B) an obtuse angle C) a straight angle D) a right angle Is it D?
Wednesday, August 5, 2015 by Jina

Fundamentals of Math
An outlet store had monthly sales of $51,000 and spent 20% of it on promotions. How much was spend on promotions?
Wednesday, August 5, 2015 by Jacqueline

math
the town mayor plans to build a pathway for the rectangular plaza whose length is 20 m longer than the width. If the pathway is 20 m shorter than twice the width. what is the length of the pathway
Wednesday, August 5, 2015 by roel

math
Each of the following is a factor of x^2 +3x-4 except A. x+4 B. x-1 C. x-4 D. 1
Wednesday, August 5, 2015 by galaxy

math
ifasinx=bcosx=2ctanx/1-tan^2 x prove that(a^2-b^2)^2 =4c^2 (a^2+b^2
Wednesday, August 5, 2015 by ggggigi

Math help
Convert the repeating decimal to a/b form, where a,b are integers and b =0(there is a slash through the equal sign) 2.36(there is a line over .36)'
Wednesday, August 5, 2015 by Kimberly

Math
Crew receives a check for $5100. The journeyman makes 300% of what the apprentice makes and the master makes 150% of what the journeyman makes. How much do they each make? Thanks!
Wednesday, August 5, 2015 by Bella

math
cindy can type 50 words a minute. At this rate, how many words can she type in a half hour?
Wednesday, August 5, 2015 by valentina

Math
A piece of copper of mass 0.55 kg is heated from 57oC to 100oC .What is the increase in the internal energy of the copper
Wednesday, August 5, 2015 by Eunny

math
Solve using suitable property [name the property] 1]428 x[-23]+[-428]x(-223) 2] 105 x(-37)
Wednesday, August 5, 2015 by Diana

math
A student had an average of exactly 84 marks after taking three tests. On the fourth test, he scored 96%. The average for all four tests is A. 84 B. 86 C. 87 D. 82
Wednesday, August 5, 2015 by !@#$%^&

math
work out [3*4*9(
Tuesday, August 4, 2015 by chasmine

math
a plane left atlanta at 11:30am and flew to an airport in boston. the plane was due at boston at 3:15pm. the plane arrived 25 minutes late. The time of the trip was: i just dont get the part time of the trip Please just tell me what i am supposed to do.
Tuesday, August 4, 2015 by Anonymous

math
To get a year's digit product, multiply the year's digits. For example, between 1900 and 2000, the 2 years 1913 and 1931 each have a digit-product of 27. What is the largest integer n for which n of the years from 1900-2000 have the same non-zero product? A. 2 B. 3 C. ...
Tuesday, August 4, 2015 by George

math
If x is greater than or equal to 100, then √x+16 (the whole thing is square rooted) is between A. √x and √x+1 B. √x+1 and √x+2 C. √x+2 and √x+3 D. √x+3 and √x+4 How do I go about solving this?
Tuesday, August 4, 2015 by George

math
For how many different positive integers n will n, n+2, and n+4 represent three different prime numbers? A. none B. 1 C. 2 D. 3
Tuesday, August 4, 2015 by George

math
Exactly ? different pairs of integers (x,y) represent points on the circle x^2 + y^2 = 25. A. 12 B. 8 C. 6 D. 4
Tuesday, August 4, 2015 by George

Math
The quotient equals the divisor, then the dividend equals the (A) square root of the divisor (B) divisor (C) divisor^2 (D) quotient
Tuesday, August 4, 2015 by Jeana

Math
How much money is 3/4 of $24 ?
Tuesday, August 4, 2015 by Shelly

Math
Britney spears her grilled shrimp so the product of the numbers of shrimp is 1001. If the number of shrimp on each spear is a prime, how many shrimp does Britney spear altogether?
Tuesday, August 4, 2015 by Jeana

math
If x is greater than or equal to 100, then √x+16 (the whole thing is square rooted) is between A. √x and √x+1 B. √x+1 and √x+2 C. √x+2 and √x+3 D. √x+3 and √x+4 How do I go about solving this?
Tuesday, August 4, 2015 by Mazim

Math
Jesse is late for work and speeds to get to the office, which is 60 miles away from his house. On the way back, he drives at a more relaxed pace. Jesse drove 30 mph faster on the way to his office than on his way back. What was his overall average driving speed for the day?
Tuesday, August 4, 2015 by Jeana

math
1/1*2 + 1/2*3 + 1/3*4 + . . . + 1/2000*2001 + 1/2001*2002 A. 1/2002 B. 1999/2002 C. 2001/2002 D. 1 I can do this, I want to know how to do it a faster way... thanks!!
Tuesday, August 4, 2015 by Mazim

Math
It took Sandra 5 hours to drive to her father's house and back. She lives 120 miles from the city where he father lives. What was her rate per hour driving for the trip? Is it 48 miles per hour?
Tuesday, August 4, 2015 by Jeana

math
When each letter in the phrase "my huge taco" is replaced by a different digit, the value of m+y+h+u+g+e+t+a+c+o will be A. 9 B. 10 C. 45 D. 55 This is confusing, can I get an explanation and help?
Tuesday, August 4, 2015 by Mazim

math
You are considering a 30 year mortgage that charges 0.4% interest each month to pay off $250 000 mortgages, determine the monthly payment p that allows the loan to be paid at 360 months
Tuesday, August 4, 2015 by Anonymous

math
For how many different positive integers n will n, n+2, and n+4 represent three different prime numbers? A. none B. 1 C. 2 D. 3
Tuesday, August 4, 2015 by George

math
Exactly ? different pairs of integers (x,y) represent points on the circle x^2 + y^2 = 25. A. 12 B. 8 C. 6 D. 4
Tuesday, August 4, 2015 by George

math
If the roots of ax^2+bx+c=0 are 6 and 9, then the roots of 3ax^2+3bx+3c=0 are A. 2 and 3 B. 6 and 9 C. 18 and 27 D. -2 and -3 I think since you multiply by 3, the roots are multiplied by 3, but I'm not sure.
Tuesday, August 4, 2015 by George

Math
The average test score of 8 students in a class is 92. Two slacker kids join the class and the test average drops to 88. If one of the slacker kids scored an 80, what did the other slacker kid score?
Tuesday, August 4, 2015 by Jeana

math
lim 3-¡Ì5+x /1-¡Ì5-x x_>4
Tuesday, August 4, 2015 by ajay

El camino college:math
The xyz corporation claims that there's NO DIFFERENCE in the salary of female and male workers at the Southern California plant. A human rights agency took two samples(25 each) .the male sample gad a mean of 350per week wit standard deviation of 50. The female sample had a...
Tuesday, August 4, 2015 by Alma

Math
A circle has an area of 78.5 m square what is its radius use pie =3.14
Tuesday, August 4, 2015 by Chimi

Math
A circle has a circumference of 62.8 cm what is its area?
Tuesday, August 4, 2015 by Chimi

Math
A circle has an area of pie cm square what is its circumference in terms of pie
Tuesday, August 4, 2015 by Chimi

math trig
Solve for x if 3sin2x - 3sinx = 2 - 4cosx 0<x<180
Tuesday, August 4, 2015 by ntsoaki

Urgent math
5x + 2.8(480-x) = 2.68(480
Tuesday, August 4, 2015 by Anonymous

Math
A grocer wishes to blend two different coffee brands because he wants to make a blend of 480 pounds to sell at $2.68 a pound. If he uses a brand of coffee worth $2.50 a pound with another brand worth $2.80 a pound, how many pounds of each does he use? Please tell me the steps ...
Tuesday, August 4, 2015 by Anonymous

math algebra
At your local bar, chicken wings cost $0.30 a piece on Thursday night. Sriacha Ranch dressing (enough for 10 wings), cost $0.10 per serving. A pitcher of of ice tea cost $7.50 and a serving of celery cost $2.50 . Tax in your part of LA County is 8.5% and the standard tip rate ...
Monday, August 3, 2015 by Justin

math
A grocer wishes to blend two different coffee brands because he wants to make a blend of 480 pounds to sell at $2.68 a pound. If he uses a brand of coffee worth $2.50 a pound with another brand worth $2.80 a pound, how many pounds of each does he use?
Monday, August 3, 2015 by Anonymous

math
3^200/3^50 a. 4 b. 150 c. 3^4 d. 3^150
Monday, August 3, 2015 by Anonymous

Math
The supplement of an angle measures 11 times its complement. Then the measure of the angle is... A. 9 degrees B. 81 degrees C. 90 degrees D. 99 degrees E. 100 degrees
Monday, August 3, 2015 by Michelle

math
If a line whose x- and y- intercepts are equal does not pass through the origin, then its slope must be A. 0 B. 1 C. -1 D. undefined I'm thinking it's 0, I don't know though.
Monday, August 3, 2015 by Ryan

Math
jack and jerry can complete a job together in 4 hours. if jack require 6 hours to do the job alone, how many hours will it take jerry to do the job alone. A.12 B.10 C.8 D.6 E.4
Monday, August 3, 2015 by Michelle

math
A received 44 more votes than B there were a total of 550 votes / 2 candidates how many votes did each receive write an equation where b received how many votes
Monday, August 3, 2015 by jerry piester

Math
Julia spent 1/3 of her birthday money. Then she lost 1/2 of the rest. She now has $10.00 dollars left.how much did she get for her birthday.
Monday, August 3, 2015 by Jeremiah

math
The result of adding a number to itself is usually unequal to the result of multiplying the number by itself. For how many different numbers are these results equal? A none B. one C. two D. four
Monday, August 3, 2015 by Ryan

math
If a line whose x- and y- intercepts are equal does not pass through the origin, then its slope must be A. 0 B. 1 C. -1 D. undefined I'm thinking it's 0, I don't know though.
Monday, August 3, 2015 by Ryan

math
I watched 1000 ants build an anthill in 5 hours. Working at the same rate, 2500 ants could have built the anthill in ? hours? A. 1 B. 2 C. 3 D. 4 I made a proportion of 1000/5=2500/x, and got 12.5, but thats not a choice. HELPS!
Monday, August 3, 2015 by Ryan

Math
Sara is making cookies and the recipe calls for 2 1/2 (2.5) cups of sugar to make two dozen cookies. How many cups of sugar will she need to make five dozen cookies? Express the answer as a mixed fraction and as a decimal
Monday, August 3, 2015 by Cheyenne

Urgent math
The initial size of a culture of bacteria is 1000. After one hour the bacteria count is 4000. (a) Find a function n(t) = n0ert that models the population after t hours. n(t) = b)Find the population after 1.5 hours. (Round your answer to the nearest whole number.) n(1.5) = ...
Monday, August 3, 2015 by Emma

Urgent math
i need help with these two homework problems Use the Laws of Logarithms to combine the expression into a single logarithm log2 5 − 5 log2 x + 1/2 log2(x + 1) Solve the logarithmic equation for x log2(x + 2) + log2(x − 1) = 2
Monday, August 3, 2015 by Emma

Urgent math
g(x) = log3(x + 3) state its domain, range, and asymptote. i am having trouble with this can somebody help me?
Monday, August 3, 2015 by Emma

Math
Suppose that a certain material has a half life of 25 years, and there are A(t)=10(1/2)^t/25 grams remaining after t years. find: i) initial amount i) Amount after 80 years Solutions i) A(0)=10(1/2)^(0/25) =10(1/2)^0 =10(1) =10 ii)A(80)=10(1/2)^(80/25) =10(1/2)^(16/5) =10(0....
Monday, August 3, 2015 by Aron

math
Solve using suitable property [name the property] 1]428 x[-23]+[-428]x(-223) 2] 105 x(-37)
Monday, August 3, 2015 by Raina

math
WHAT ARE THE QUESTION IN BUSMATH?
Monday, August 3, 2015 by tan

Urgent math
please help The fox population in a certain region has a relative growth rate of 7% per year. It is estimated that the population in 2005 was 19,000. (a) Find a function n(t) = n0ert that models the population t years after 2005. n(t) = (b) Use the function from part (a) to ...
Monday, August 3, 2015 by Lydia

Urgent math
population growth model. Can anybody please help me out in trying to solve this problem? It's my homework and I don't seem to understand what I am getting. The count in a culture of bacteria was 400 after 2 hours and 25,600 after 6 hours. (a) What is the relative rate...
Monday, August 3, 2015 by Lydia

Math Probability
What is the probability of choosing an odd # from A that is AnB? A{1,2,3,4,7,9} B{3,7,9,11,12,15}
Sunday, August 2, 2015 by Seany

math problems
shelia works at Bills Bargin. She earns $350 per week plus 10% of all sales. What is her commission for the week, if she sold $2490 worth of goods?
Sunday, August 2, 2015 by Tanya

Math
Gary took a drive down to the beach and drove at a pace of 45 mph on the way there. The trip took him 3 hours. He drives the exact same route on the way back, but takes it slow so he can enjoy the sunset. If Gary's return trip took him 4 hours, how fast was he driving on ...
Sunday, August 2, 2015 by Jeana

Math
Henry found a tablet computer on sale with an incredible 55% discount. If he ended up paying $215 for the tablet, what was its original non-sale price?
Sunday, August 2, 2015 by Jeana

Math
a person who is 6 feet tall is standing 108 feet from the base of the tree, and the tree cast a 120 foot shadow . The person's shadow is 12 feet in length that is the height of the tree
Sunday, August 2, 2015 by Mo

Math
a local government had an employee reduction and lost 1/9 of their employees. If 176 of its employees were left after the reduction how many employees were there originally?
Sunday, August 2, 2015 by Bella

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