Posts by John
Total # Posts: 8,817

math
Let L be the length then the width is (L3) and we know area is L(W) So Area = (L)(L3) and Area is 28 so 28=(L)(L3) use the distributive property then move your equation to the right hand side and solve for the roots : ) Hint the factors of the quadratic are 7 and 4, you ... 
Science
Why don't you make a poster for your portfolio. The information is just a google search away, or use your textbook to get the facts : ) 
Math
(2/5)x200=80 So the first charity got 80 200  80 = 120 which is left. 120x(1/3)=40 The second charity received 40 cans. so 12040 = 80 cans left to give to the third home. 
Math
Since 10 times 15 is 150 and 8x15=120 we see that each unit is 15 feet. 
maths
Start with a Principal of $1 and see it grow to $1.75, thus I=PRT and you have I, P and T so solve for R : ) 
Math
Use the zscore formula to get your value then look it up : ) 
Math
YES : ) 
Octotarian!
Wow! Congratulations Ms. Sue! You are sharp as a tack : ) It is exciting that you are still excited to help students understand their studies. 
math need help fast
Wow! Congratulations Ms. Sue! You are sharp as a tack : ) It is exciting that you are still excited to help students understand their studies. 
math
0.492063492 divided by 226 
math
3.72380952 divided by 4.16190476 
math
(3/4 divided by 3/100  47/2) divided by 3/2 times 1/2 +7/6 = 
math
(8.75?17/6) divided by 7.1+(9/2+8/3) divided by 43/10 
math
13/611/15x=0.15 x= 
math
5/9 divided by x=15/4 x= 
math
3/x=x/12 x= 
math
7/x=12/14 x= 
math
13/611/15x=0.15 x= 
math
0.25x7/6=7/3 x= 
math
0.25x7/6=7/3 x= 
math
13/611/15x=0.15 x= 
math
11/2+0.6x=16 x= 
math
5/9 divided by x=15/4 x= 
math
144/25=x/5 x= 
math
3/x=x/12 x= 
math
7/x=12/14 x= 
math
Solve the problem by making up an equation. A child is 12 years old, and his father is 32 years older. In how many years will the age of the father be 3 times the age of the child? Just tell me the equation. 
Math
Multiply your 36 by 2/3 and then convert to feet : ) 
Maths
Do the first 2 years at the regular amount then ADD it to the final five years at the new amount. Both parts using the simple interest equation. 
math
You have a right angle triangle. Just remember where the angle of depression goes and what it means. Then you have the TAN theta ratio with 40 being the adjacent side, and x being the opposite side. And do the math. 
physics
I am sorry Amanda this platform does not allow graphics to be added to your question. Thus without a graph there is no telling where a,b, and c are located. 
Calculus
I am sorry Michael this platform does not support inserting diagrams into your question. Thus m(x) and n(x) could be anything. Again, sorry. 
plz help right away!!!
It is a proportional situation. You have 1cm/4m = 6cm/x, you can cross multiply to get your answer. 
math
Since A=(L)(W) and the L length is twice the width we have A=(2w)(w) and 72=(2w)(w) 72=2w^2 now solve for w 
Algebra
Sub h=16 into the equation and rearrange to get 0 = ... then factor to solve for the two different times that the height is 16 feet. hint: 0=16t^2+30t12 
maths
He spent 2/5th leaving 3/5th but then spent 1/5of 3/5th, which is (1/5)(3/5) so he spent 3/15th. So he has 3/5  the 3/15 he spent : ) 3/5  3/15 = ... 
MATH PLEASE HELP ME
You could draw a tree diagram it has three branches for the different lengths, then from each of those branches it has 5 branches for the different colours, and from each of those branches it has 2 different styles : ) so... 3 x 5 x 2 is the total number of final branches (... 
math
I=PRT, but the time is 14/12 (as you need to consider years) So I=1850(.08)(14/12) 
intermideate lgerbra
Using the sum of an arithmetic sequence with a=5 and d=4 we have to solve for n (which is the number of rows). so... 780=(n/2)(2a+(n1)4) but we do the math and get down to 0=4n^2 +6n1560 which needs the quadratic formula to factor. One of the roots of the quadratic formula ... 
extended mathematics
When you sketch out the diagram... two triangles. Since MN=2ML, and MN=N0, then NO=2ML and it also provides that angle LMN is 90 degrees and since it is an isosceles triange, angle LMN = angle LNM and they are both 45 degrees. Triangle LMN has a similar triange sitting on top ... 
alegrba
65 percent... is out of 100 65/100 reduces by dividing the top and bottom by 5 so... 65/100 = 13/20 and 65% when written as a decimal is 65/100 on your calculator gives you the second one that is also correct. So... the question says choose all that apply... and there are two ... 
Science
How many calories of heat energy are required to melt 20 grams of ice at 0 °C? Answer: _____ calories How many calories of heat are required to evaporate 20 grams of liquid water at 0 °C? Answer: _____ calories 
Math
3/8 th of a litre because there are 8 people sharing the juice (Akio and 7 friends makes 8 people) 
Math
A carpenter has several boards of equal length. He cuts 3/5 of each board. After cutting the boards, the Carpender notices that he has enough pieces left over to make up the same length as four of the original boards. How many boards did the Carpender start with? 
physics
is that all there is to it? 
physics
A 18 kg rock is attached to a 52 N/m spring, you then start to swing the spring above your head in a horizontal circle at 32 radians/s. Calculate how far the spring will stretch during this motion assuming its relaxed length is 1.5meters. Ignore any effects of gravity 
algebra 2
The mass of the particles that a river can transport is proportional to the sixth power of the speed of the river. A certain river normally flows at a speed of 3 miles per hour. What must its speed be in order to transport particles that are 200 times as massive as usual? ... 
math
definition of hypotenuse 
math
How many different right triangles are there with a hypotenuse of length 5 cm? 
math
How many different triangles with sides of measurements of 3, 4, and 5 are there? 
math
83/55 + 93/50 can you give me the actual answer 
math
definition for linear 
math
(3/4 divided by 3/100) divided by 3/2 x 1/2 + 7/6= 
math
83/55 + 93/50 
math
3/x=x/12 what is x 
math
if eight times a number is increased by three the result is 19 more than six times this number. find the number 
8th grade social studies
The Los Angeles Times Printed an article criticizing the way President Bush was dealing with the economy 
algebra
in a 3 digit number, the tens digit is twice the hundreds digit and 1/2 the units digit. if the digits are reversed, the new number is 49 more than 3 times that of the original number 
calculus
If an arrow is shot upward on Mars with a speed of 52 m/s, its height in meters t seconds later is given by y = 52t ? 1.86t2. (Round your answers to two decimal places.) What is the average speed over the given time intervals? (i) [1, 2] (ii) [1, 1.5] (iii) [1, 1.1] (iv) [1, 1... 
Biology
After a family picnic,Ella dumped the ice and rock salt from ice cream maker in the back yard.that area of yard now contains dead,brown grass. Explain why this happened using word plasmolysis in your explanation. 
AP Bio
Discuss how translocation/transpiration is an adaptation that allows flowering plants to overcome problems of life on land 
math
(4/3 x 4/3) x (3/2 x 3/2) divided by 2 2/5 = 
math
13/3 + 35/4 divided by 21/4 = 
math
how to find triangular numbers 
math
A collection of coins has a value of 64 cents. There are two more nickels than dimes and three times as many pennies as dimes. How many of each kind of coins are there? 
math
7+(x9/24)times40=480 what is x 
math
44(7695/x)=25 What is x. 
math
Write two mixed numbers so that all rules are applied: 1. One number is larger than the other by 4 2/3 2. The difference of the numbers is equal to the smaller number. 3. The sum of the numbers is natural number. What are the numbers? 
math
The sum of two consecutive numbers is n+1. What are the numbers? 
math
a three digit number has ten digit two greater than the units digit and the hundreds digit one greater than the tens digit. the sum of the tens and the hundreds is three times the units digit. what is the number 
math
Sheri's age in 20 years will be the same as Jerry's age right now. Ten years from now, Jerry's age will be twice Sheri's. What are their present ages? 
chemistry
*when you 
chemistry
What kinds of lab techniques could you cite in your conclusion with a molarity lab? When determine what molarity is correct. 
math (trigonometry)
d) With a d=100 we know that the distance the wheel travels C=pi(d) so c=3.14159(100m) c=approx 314m to go around the ferris wheel once. But you can go twice 314(2) in 10 min so... setting up a proportion distance/time = distance/time 618m/10min = x/6 min and solve for x 
Math
Thanks Arora! After more thought I believe all cases are covered in your eloquent solution : ) 
Math
Hmmmm.... can it really be that simple? WHat about the no copies of s, 1 copy of s, no copies of n, 1 copy of n? 
Math
"How many ways are there to arrange some, but not all, of the letters in "Suspension" if at most once copy of each letter can be used? I have a start... I think the part that says "at most" one copy means that you have to remove one of the "s"... 
Math
Looking at the question as a proportion would give shadow/object = shadow/obj then put in your numbers... 9feet/6feet = shadow/20 then multiply both sides by 20 to obtain what Damon said : ) 
HELP HELp
Hey, guys joke on you because I pass!!! hahahaha 
HELP HELp
You guys are no help if I fail is because of you guys!!! Also reporting all of you. 
precalc final?
I need help on the precalc final 
Science
In the system shown above m1 = 9.5kg and m2 = 2.6kg. If the coefficient of kinetic friction UK = 0.15 and the system is released from rest 
Math
google search the DESMOS website is a graphing website You can graph in radians or degrees : ) It is free : ) 
Chemistry(Photoelectric effect)
I've got this question wrong 2 times now... Which of the following statements about the photoelectric effect are correct? I. If electrons are being ejected, the number of electrons ejected increases with increasing light intensity. II. The minimum energy required for ... 
Math
Awesome! Now I truly understand the scenerio. Thanks so much for your wise and timely replies and solutions : ) 
Math
The "atleast 5 tosses" part means 1P(50rless tosses) so I think we also need the fifth toss that has 1 in 32 ways to get HT, that being TTTHT So that has to go into the subtracting bracket as well... I think : ) Please advise. 
Math
Or... do we not break up where the tree ended (as in my 1 solution), but do 1  7/32 which would then be 25/32 for the probability of it taking atleast 5 times for a head followed by a tail to occur? 
Math
When I made a tree diagram for 4 tosses of a coin... I had 6 branches where you tossed until a head was followed by a tail. That was 6 branches out of 16. Then I added another toss and came up with one more for the sample set. HHHHT, so that would be 1 out of 32 produce the ... 
Math
If you toss a fair coin and you toss until a head is followed by a tail. What is the probability that at least 5 tosses are needed for this to occur? 
physics
Look at the area of the triangle 
math
YES :) and another way is to say... If 12 out of 180 have spots, then 18012 do not have spots. So out of 1200, we know the percent with no spots is 168/180 (written as a decimal), then 168/180 times 1200 is also 1120 : ) 
Alg 1 Further explanation PLEASE
Suppose f(x)=P(x). Determine the range of f (1,3), (4,1), (3,3), (2,4), (2,4), (3,5), (1,6) Algebra 1  Damon today at 10:12am Nothing can be negative. No y can be different from x Can you explain further please 
Algebra 1
Suppose f(x)=P(x). Determine the range of f (1,3), (4,1), (3,3), (2,4), (2,4), (3,5), (1,6) 
Algebra 1
Cassandra bought a car for 22,385. The value depreciates 14% a year. a. Write a function, d(x), that gives the value of the car after x years. b. What will the value of Cassandra's car be after 10 year 
English
This is all for the poem "To His Coy Mistress" They're all short answers. 1) What is the speaker trying to convince his mistress to do? 2) Why is she being "coy"? 3) Outline the author's argument in the form of a syllogism or a logical argument ... 
Financial analysis
I have 2 question. If current assets increased, then current liabilities also increase or decrease? And if current liabilities decreased, then current assets also increase or decrease? 
statistics / probability
A cooler full of sodas has 12 lemonlime drinks and 18 gingerales. If one drink is selected at random and then a second drink is selected at random, what are the chances that both sodas will be gingerales? 
math
Terry bought some gum and candy. The number of packages of chewing gum was one more than the number of mints. The number of mints was three times the number of candy bars. If gum was 6 cents a package, mints were 3 cents each, and candy bars were 10 cents each, how many of ... 
calculus1
Let f(x) = x^5 + 3x^2 ? 5x ? 7, find the interval(s) where f is increasing and decreasing. 
math
Terry bought some gum and candy. The number of packages of chewing gum was one more than the number of mints. The number of mints was three times the number of candy bars. If gum was 6 cents a package, mints were 3 cents each, and candy bars were 10 cents each, how many of ...