7,189 Answered Questions for the topic Math Help

Math Help

04/24/17

the price of oil has gone from $36 to $24.80 for 5 quarts needed for an oil change. Find the ratio of the decrease in price to the original price.
it's math questions, just need to be solved. 
Follows • 2
Expert Answers •1
Math Help

04/24/17

The difference of a number divided by 2 and 5 is equal to 4 .
need help putting in sentence 
Follows • 2
Expert Answers •1

04/24/17

Help proving differential equation
I', really stuck on this one HW question:   I have to show how dC/dt = (D * (d^2C/dx^2)) + P at steady state (so when cD/dt =0)equals: (d^2C/dz^2) + (Pa^2/D C(a)) = 0 using C= C(x)/C(a) and z=x/a... more
Follows • 2
Expert Answers •1
Math Help Word Problem

04/24/17

Help with algebra, please!
A rectangle with an area of 240^2 has a length 10 inches shorter than 5 times it's width. Which expression could be used to solve for the length of the rectangle?
Follows • 2
Expert Answers •1
Math Help

04/24/17

I need to solve these 2 questions:
ex+2ey=3 x+y=0   and   ex+ey=e-2 xy=-15   pls haaaalp !
Follows • 1
Expert Answers •1
Math Help

04/24/17

What are the next three numbers in the pattern?
1,3,7,13,21
Follows • 2
Expert Answers •1
Math Help

04/23/17

A person can travel from New York City to Buffalo by going North 170 miles to Albany and then 280 miles to buffalo.
To the nearest mile, how many miles would be saved by traveling directly from New York to Buffalo?   Show work please
Follows • 2
Expert Answers •1
Math Help

04/23/17

What is the length of a diagonal in a square if the length of each side of the square is 6. Write your answer in simplest radical form.
show work please
Follows • 2
Expert Answers •1
Math Help

04/23/17

Two pedestrians begin walking from the same point. Pedestrian A walks North for 225 feet and Pedestrian B walks East for 300 feet.
How far apart are they when they stop walking?   show work
Follows • 2
Expert Answers •1
Math Help

04/23/17

-5/6 greater than or less than -0.1
-5/6 ___ -0.1
Follows • 2
Expert Answers •1
Math Help

04/23/17

3e^5x=1977
The ^ supposed to indicate up . I trying to figure out solution set and decimal 
Follows • 2
Expert Answers •1
Math Help

04/23/17

a=p( 1+r/n) ^nt "r/n" equals a fraction
Find the accumulated value of an investment for 5 years at and interest rate of 5.5% if the money is A) compounded semiannual B) compounded monthly C) compounded  continuously    
Follows • 2
Expert Answers •1
Math Help

04/23/17

Need help aSAp
the combined land area of the countries A sand B is 190,973 square kilometers. Country A is larger by 373 square kilometers. Determine the land area of each country. 
Follows • 2
Expert Answers •1

04/22/17

Write the dilution ratio that was performed, as a fraction in lowest terms
A 20% solution of NaCl in H2O is diluted, by adding distilled water, to a final concentration of 6% NaCl. A 20% solution of NaCl in H2O is diluted, by adding distilled water, to a final... more
Follows • 2
Expert Answers •1

04/22/17

find the overall dilution ratio and the total amount of water added
A 24% w/v stock solution of NaCl is diluted with water according to a 1:10 dilution ratio, then again by a 5:6 dilution ratio. a) Determine the overall dilution ratio (in lowest terms) performed:... more
Follows • 2
Expert Answers •1
Math Help Math

04/22/17

SImplify__
(x+8)2 ___________
Follows • 3
Expert Answers •2
Math Help

04/22/17

What formula do I use for this?
How much money should be deposited today in an account that earns 9% compounded quarterly so that it will accumulate to $5800 in 5 years? Please solve aswell so I can see the process.. The answer... more
Follows • 2
Expert Answers •1
Math Help Math Ratios

04/22/17

A school's ratio of girls to boys is 4:3. If there are 350 students, how many boys attend the school?
________________________________________________________
Follows • 2
Expert Answers •1

04/22/17

Write a polynomial of least degree with rational coefficients so that P(x)= 0 has the given root. 2-3i
Please help. due very soon and I'm confused  
Follows • 3
Expert Answers •1

04/21/17

​d) Verify your conjecture from part​ (c) by calculating the standard deviation for each data set.
d) Verify your conjecture from part (c) by calculating the standard deviation for each data set.   Data Set for men: 42,39,50,27,45,47   Data set for women: 24, 32, 35, 27,34,25   The mean... more
Follows • 1
Expert Answers •1

04/21/17

Find the standard deviation for the group of data items.
Find the standard deviation for the group of data items. Stems: 3 4 5   Leaves:72 7  2 7 The mean I got is 47 and the numbers totaled up when subtracted it by the mean ^2 is 250. Not sure... more
Follows • 1
Expert Answers •1

04/21/17

Find the standard deviation
Find the mean, range, and standard deviation of the data. Sample A: 26,30,34,38,42,46,50. (Round to two decimal places if needed)   I have the mean and range, but I need help finding the... more
Follows • 1
Expert Answers •1
Math Help

04/20/17

How many seats are in the 99th row in the center section?
a Greek theater has 30 seats in the first row of the center section. Each row behind the first row gains three additional seats. 
Follows • 2
Expert Answers •1
Math Help

04/20/17

find the other endpoin.
Given the midpoint and one endpoint of a line segment, find the other endpoint endpoint (-9, -1) Midpoint (8, 14)
Follows • 2
Expert Answers •1
Math Help Math

04/20/17

Find Equation
The distance from a point (x,y) to a point (2,3) is 5. Find the equation that describes this fact.
Follows • 3
Expert Answers •2

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.