Posts by John

Total # Posts: 8,707

Mathematics
Draw 4 circles that make your venn diagram. Start in the middle and work your way out. That is place the 3 in the very center of the 4 connected circles : ) Remember that you will have the number 5 outside of the four circles but inside of your Universal set box : )

maths
Re-arrange for y=mx+b then look at the m value (the slope), re-write your equation with the new slope... which is 5/2 (when you re-arrange the equation). Then use y=(5/2)x + b and sub in your ordered pair (x,y) which is (4, -2)and solve for b : ) Then re-write the equation ...

math
It is in the real number system, as well as the rational number set (it is not irrational because it stops (terminates) at the 7.

Math
24*(1/4) = 6 So 24 - 6 = 18 18* (2/5) = then add that to the $6 he spent the first time : ) and you have your answer.

Math
For #3 if you just count them... 1st oldest 2nd oldest 3 4 5 6 7 Niko (8th oldest, and 12th youngest) 11th youngest 10th 9th 8th 7th 6th 5th 4th 3rd 2nd first youngest... And count those lines you will see the number of students is not 21

Math
For #1 B is the correct answer :)

math
You could graph the circle and the line and SEE the point(s) of intersection. Or since the line is already re-arranged for y, sub that into the cirle equation and solve for x. And then solve for y : )

Math
Correct : ) Using the tangent ratio.

Maths
You could also look at it as a proportion.(cm/km) = (cm/km) (1cm/1km) = (3.4cm/x) Solve for x. Note: this would not be the most intuitive way... but it would get the question completed if you don't see an easier way.

Science
Do you recall your teacher saying something along the lines... "The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion...

Science
What do you believe are the correct answers??

Math - Trigonometry
Yes. You have rounded. But it is correct : )

Math - Trigonometry
Did you use tan48 = x/4 ? and then solve for x.

math
60 +35+25+20 = 140 but your logic is good. And your answer of 60 for just Netflix is correct as well : )

math
One method is to use equivalent fractions until you find a difference of 36. For instance 4/10 = 8/20 and the difference between 20 and 8 is 12. 4/10=12/30 and the difference between 30 and 12 is 18. 4/10=16/40 and the difference is 24... etc

math
Make it into a proportion... percent is out of 100. So 56/x = 15.625/100 and solve for x

Math
Thank you so much for your answer, Damon, i'm new to trigonometry and i'd like to know why it's necessary to do 2 - 1.5 to get 0.5? Thanks! much appreciated.

Math
A ladder is placed so that its foot is 2 m from a wall. The ladder touches the top of a 2 m fence that is 1.5 m from the wall. State how you know the two triangles in the diagram are similar. How high up the wall does the ladder reach?

math
Let L be the length then the width is (L-3) and we know area is L(W) So Area = (L)(L-3) and Area is 28 so 28=(L)(L-3) 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 120-40 = 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 z-score 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
13/6-11/15x=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
13/6-11/15x=0.15 x=

math
0.25x-7/6=7/3 x=

math
0.25x-7/6=7/3 x=

math
13/6-11/15x=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 re-arrange to get 0 = ... then factor to solve for the two different times that the height is 16 feet. hint: 0=-16t^2+30t-12

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+(n-1)4) but we do the math and get down to 0=4n^2 +6n-1560 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+(x-9/24)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

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