Thursday
December 8, 2016

# Posts by Knights

Total # Posts: 334

Yup, should be all right.
March 1, 2013

analytic geometry helps are appreciated
Find the maximum value of y/x over all real numbers x and y that satisfy (x-3)^2+(y-3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution?? No one has answered this question yet.
March 1, 2013

simplify
v^4u^5/v^3u^6 we get v^4/v^3 * u^5/u^6 it is always helpful to isolate various variables. v^4/v^3= v. u^5/u^6 = 1/u thus we get v * 1/u = v/u correct me if im wrong
March 1, 2013

math
basically, you need to isolate the variable y. So, we minus x from both sides to get 1/5y = -x-6. We then multiply both sides by 5 to get y = -5x-30. So, the equation x + 1/5y = -6 can be put into the form mx+b and the answer is y=-5x-30
March 1, 2013

Calculus AP
Could you give us a diagram? OR a link to one or describe it?
March 1, 2013

algebra
Basically, we want to isolate c. That means we find c in terms of other stuff. So, get rid of everything else and solve for c. P = r-c/n (This is kinda unclear - is the divided sign under the c or under the r-c, if so write as (r-c)/n, but in this problem I will assume it is P...
March 1, 2013

algebra
(Meaning 7.5 was the answer sorry if I was unclear)
March 1, 2013

algebra
Similar triangles have similar ratios DE / AB = 6/4 = 3/2 EF/BC = 9/6 = 3/2 So we know that DF / AC = 3/2 We are given that AC = 5 So, DF / 5 = 3/2 We cross multiply to get 15 = DF x 2 So, DF = 15/2 And, to the nearest tenth it is equal to 7.5
March 1, 2013

algebra
A diagram would be nice. assuming DE ~ AB let the sides of DEF be d,e,f. let the sides of ABC be a,b,c. a/b = d/e a/c = d/f etc. When we are given lengths, plug them in
March 1, 2013

Find the maximum value of y/x over all real numbers x and y that satisfy (x-3)^2+(y-3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution??
March 1, 2013

World history; Check:P
To expound on Ms. Sue's comment, principally the "sentence" : Which meant they won more battles. So, you could combine this sentence with the previous sentence by replacing the period with a comma.
March 1, 2013

analytic geometry helps are appreciated
thanks a bunch sire
March 1, 2013

analytic geometry helps are appreciated
For some positive real number r , the line x+y=r is tangent to the circle x^2+y^2 = r. Find r. How do we do this? Set equal equations together??
March 1, 2013

economincs
Sales of whiskey will fall by 4%. Finding the solution to this problem is simple algebra. The equation for the price elasticity of demand is Elasticity=%Change Quantity Demanded / %Change Price Therefore, we just plug in the figures we are given and solve for % Change Quantity...
February 27, 2013

analytic geometry helps are appreciated
thank you very much it helps a lot!!!
February 27, 2013

analytic geometry helps are appreciated
A line with slope 3 is 2 units away from the origin. Find the area of the triangle formed by this line and the coordinate axes. How is this even going to be done? We are given little info but a bunch of variables. Could someone help please??
February 27, 2013

math
sorry, i cant read it....6-1x0?? anyway if you meant 6-1x * 0 + 2/2 = 6-0 +1 = 7 or if you meant 6-1x + 2/2 we get 6-1x+1 = 7-1x
February 26, 2013

math
Cross multiplying gives us PV = RT. Then, we divide both sides by R to give us T= PV/R
February 26, 2013

Maths
February 26, 2013

I could also i think find the area of the square/rectangle and minus the pieces that are not part of the triangle
February 22, 2013

What is the area, in square units, of a triangle whose vertices are at (4,-1), (10,3) and (4,5) ? How to do this?
February 22, 2013

Biology
* Natural
February 22, 2013

Biology
atural defence mechanisms (or innate factors) against malaria are most apparent in populations continually exposed to malaria parasites. For example, inherited conditions such as sickle cell anaemia and beta-thalassaemia, which cause deformities in red blood cells and are ...
February 22, 2013

social studies !
type in behindthename . com /names/usage/ancient-roman
February 22, 2013

Thank you very much it helps a lot!!
February 22, 2013

A laser is shot from vertex A of square ABCD of side length 1, towards point P on BC so that BP = 3/4. The laser reflects off the sides of the square, until it hits another vertex, at which point it stops. What is the length of the path the laser takes? Help?? Won't the ...
February 22, 2013

A laser is shot from vertex A of square ABCD of side length 1, towards point P on BC so that BP = 3/4. The laser reflects off the sides of the square, until it hits another vertex, at which point it stops. What is the length of the path the laser takes? Help?? Won't the ...
February 22, 2013

Math
65 ....
February 22, 2013

Math ASAP
1.5 * 5 = ? 1.5 * 7 = ? 1.5 * 5 *2 + 1.5 * 7 *2 - 24 = ? fyi it equals 15 + 21 - 24 so 36 - 24 = (12)
February 22, 2013

Math
50, 20, 10 = 80 50, 20, 100 = 170 50, 10, 100 = 160 20, 10, 100 = 130 so 4 sums, correct me if i am wrong
February 22, 2013

Math
look for combos or just add 2+8 + 20 + 5 + 11+14 +17 = 10+25+25 + 17 = 60 + 17 = 77
February 22, 2013

maths
1,1,1,7 1,1,2,6 1,1, 3, 5 1,1, 4, 4 etc.
February 22, 2013

English
It is very good, detailed and professional. What is the title of report? thanks
February 21, 2013

math
sorry forgot to add, minus minus one from 162/145
February 21, 2013

math
16200 / 14500 = ? we simplify by crossing out 0s 162 / 145 so nearly 12 % or...11.724137931% to be exact
February 21, 2013

math
if he spent 26% x on skis which is equal to 350 we set equations 26/100 x = 350 so 13/50 x = 350 so multiplying both sides by 50/13 gives us 50/13 * 13/50 x = 350 * 50/13 x = 350*50 /13 which is equal to around 1346, or 1346.15385 to be exact
February 21, 2013

math \$\$
np. anyways, This is a pretty easy question to answer. The three possible (winning) outcomes are: 1. Heads, Heads, Tails. 2. Heads, Tails, Heads. 3. Tails, Heads, Heads. If we look at the possible combination of other (losing) outcomes, we can easily determine the probability...
February 21, 2013

English help ASAP
yes it is correct, since it is 2 sentences joined with a conjunction, thus pinning the name of the sentence a "compound sentence".
February 21, 2013

landmarks
wat...? could you further explain, im confuzzled.
February 21, 2013

Organic
could you set the equation down, thanks
February 21, 2013

Math
true. also, u can reduce each fraction to find common denominator faster and less messily
February 21, 2013

Math
convert to common denominator and compare
February 21, 2013

Grammar
first it is a dependent clause, since it cannot stand by itself. it is also a relative clause, since Relative clauses are dependent clauses introduced by a Relative Pronoun (that, which, whichever, who, whoever, whom, whomever, whose, and of which). it is also restrictive, as ...
February 21, 2013

Math
first simplify to lowest terms, so the frist fraction is 4 3/5. then we find least common denominator, so least common multiple of 5 and 4 is 20. we times first fraction by 4 and second by 5. thus we get 4 12/20 and 3 15/20 then we convert to improper fraction to get 4*20 + 12...
February 21, 2013

math
uh, what was the first option? but anyway ninety hundreths is equal to 90/100 or written as 0.90 it is also said as "nine-tenths" since you can simplify, so it would be 9/10, and 0.9 otherwise. but anyway they are all the same.
February 21, 2013

Finance
is it compound interest?
February 21, 2013

math \$\$
just saying angie, you don't need to post twice, but alls good.
February 21, 2013

math \$\$
to get the x intercepts and y intercepts ( or as you call it two points of intersection), set one variable to 0 and solve for the other. then set the other variable to 0 and sovle for the first. so let x be 0 first. 5*0 -2y = 10 so -2y = 10, so y= -5. We write this as (0,-5) ...
February 21, 2013

Math
find the least common multiple 8, 16, 24 12,24 so every 24 minutes 9:00 am + 24 minutes = 9:24am
February 21, 2013

MATH PLZ
B always positive for example, this would be positive number - negative number = positive number + - - positive number = positive number 3 (positive number ) - (-14) (negative number) = 3 --14 = 3+14 = 17. btw it cant be 0 because the first number is positive
February 21, 2013

thanks a lot i appreciate your time
February 21, 2013

When a square of area 4 is dilated by a scale factor of k, we obtain a square of area 9. Find the sum of all possible values of k. I do not understand...it is not 3/2, as I was told, but I don't understand why? Help?
February 21, 2013

chemistry
February 21, 2013

ELA
go to thesaraus
February 21, 2013

Math plz fast i really need it
to get sum of 1 = 0. to get sum of 2 = 1/36 since there are 6 options on each die and two die so 6*6 = 36. And the only way to get two is 1+1 to get sum of 3 = 1+2, 2+1, so 1/18 to get 4 = 1,3 2,2 3,1 so 1/12 to get 5 = 2,3 3,2 1,4 4,1 so 1/9 etc etc etc so after writing them ...
February 21, 2013

Geometry - Transformations and Dilations
When a square of area 4 is dilated by a scale factor of k, we obtain a square of area 9. Find the sum of all possible values of k. I do not understand...it is not 3/2, as I was told, but I don't understand why? Help?
February 21, 2013

If it is not economically discouraging, or is otherwise plagiarizing another person's work, I don't see why not. Even if it isn't a good idea, you will still learn something out of it.
February 21, 2013

A circle with radius 3 is inscribed in a isosceles trapezoid with legs of 10. Find the length of the smaller base. When I draw a diagram, calling the trapezoid ABCD with A and D at the bottom, I see that the length from where the altitude from B and C hits AC to D is 8 from ...
February 18, 2013

I need help on a geometry cone/frustrum problem
Thanks a lot steve it really helps!
February 16, 2013

I need help on a geometry cone/frustrum problem
A sphere with radius 3 is inscribed in a conical frustum of slant height 10. (The sphere is tangent to both bases and the side of the frustum.) Find the volume of the frustum. Could someone help me? I can't find the radius of the cone....
February 16, 2013

Math
miles truck drove before car left rest stop = 45 * 1/4 miles an hour at which the car is catching up : 60-45 = 15 mph how long to drive 45/4 miles at 15 mph?
February 12, 2013

Mathematics -- Geometry --
/i got 300-34 pi
February 12, 2013

Mathematics -- Geometry --
A bowling ball is a solid ball with a spherical surface and diameter 30 cm. To custom fit a bowling ball for each bowler, three holes are drilled in the ball. Bowler Kris has holes drilled that are 8 cm deep and have diameters of 2 cm, 2 cm, and 3 cm. Assuming the three holes ...
February 12, 2013

Math Word Problem
x+x+5+x+10+x+15+x+20 = 425 5x+50=425 x=75 x+20 = 95 answer = 95
February 12, 2013

Thank you so much guys I really appreciate it!!!
February 2, 2013

PLEASE HELP I REALLY NEED HELP. Each of the three circles in the figure below is externally tangent to the other two, and each side of the triangle is tangent to two of the circles. If each circle has radius three, then find the perimeter of the triangle. The figure is ...
February 2, 2013

Let AB be the diameter of a circle, and let point P be a point on AB. Let CD be a chord parallel to AB. Prove that PA^2 + PB^2 = PC^2 + PD^2 It can be solved using geometry methods (no trig). Anyway, I figured out that PA^2 +PB^2 = 2OP^2 + 2OB^2. However, I cannot find right ...
January 15, 2013

Math
14/6 = 7/3 :D
January 8, 2013

Pre-Cal.
and fyi 2i is an imaginary number...
January 8, 2013

math
Hi, first thing you do is to want to find Formulas formulas formulas. hey, this is a arithmetic sequence! An arithmetic sequence is A series such as 3 + 7 + 11 + 15 + ··· + 99 or 10 + 20 + 30 + ··· + 1000 which has a constant ...
January 1, 2013

Financial management
Hi. First thing you ever want to do when seeing these kind of problems: Break it into pieces, otherwise known as get rid of most of the words. For the first PARAGRAPH, all you need to know there are 400 tenants each pays 2k a month. thus in a month u get 400 * 2k = 800000 or ...
January 1, 2013

Mock Trial
Hi all, I belong to a education group, and we practice Mock Trial. Where can I find a video of a real trial going on so I can learn from it? Thanks all and Happy New Year!
January 1, 2013

math
It would be great if you could somehow edit the function / math part of the problem because I do not understand if you are talking about "if less than or equal to -5" or "x<1" or "if -5 less than or equal to x<1" Thanks a lot and Happy New Year
January 1, 2013

Physics
Physics - Damon, Saturday, November 17, 2012 at 8:28pm T sin 30 = force up = 730 T = 1460 N in cable A T cos 30 = horizontal component = 1460 cos 30 = 1264 N I did not post this...Damon did This problem is the same thing but with a sign weighing 730 N
January 1, 2013

math
Compound interest P is the principal (the initial amount you borrow or deposit) r is the annual rate of interest (percentage) n is the number of years the amount is deposited or borrowed for. A is the amount of money accumulated after n years, including interest. When the ...
January 1, 2013

algebra
Without going into log, first remember: x^(1/2) = sqrt x. (I am assuming you are not talking about (16^1)/2 which is 8). For example, if 4^2 = 16, what is 4^(1/2)? IT would be a number squared to be 4. So its 2. Same thing. what is sqrt x? remember a number squared = the ...
January 1, 2013

Algebra
Hi. I am assuming . = x or * or times so then it would be 2 +30 since multiplication goes before addition. (order of operations) then 30+2 = 32. multiplication and division go first so 32/5 * 3 = 64/5 -9 = 64/5 - 45/5 = 19/5 = 3 3/5
January 1, 2013

math
16 = 2 x ? ? = 8 8 = 2 x ? ? = 4 4 = 2 x ? ? = 2 2 x 2 x 2 x 2 x 3 = 48 Happy New Year Man
January 1, 2013

math help!
uh you mean pattern? well the 2nd is 3/4 of 48 and the 3rd is 3/4 of the 2nd. it is a geometric series with ratio 3/4 and first term a
January 1, 2013

Algebra
ok plug it in. for example... x + 1 = ? if x = 1 thus 1 replaces x, (get rid of the x and stick in a 1) so we would get 1+1 = 2 same here. remove the a and stick in a 33 to get 33-13 = ?
January 1, 2013

for Knights
thanks a lot guys for your interest. Yes, it is somewhat of a confusing problem. @Steve: I appreciated it a lot and you did a very good job at explaining it. Thanks a lot guys and Happy New year. take care!
January 1, 2013

calculus
so sqrt { x+7} = 1 right? if so... then square both sides to get x+7 =1 x = -6
January 1, 2013

Maths
circumference = diameter * pi thus 204 cm = diameter (x) * 3.14159265358... or about 3.14. use division: 204/ 3.14 = ?
January 1, 2013

math
Question: Is this math?
January 1, 2013

triangle inequality - altitudes help plz
hi guys ive be struggling on this problem for a couple of days, so please help if you can Problem:Two altitudes of a triangle have lengths 12 and 14. What is the longest possible length of the third altitude, if it is a positive integer? Thanks in advance and merry christmas: ...
January 1, 2013

maths
he lost 4% and lost 22 dollars 1. 1.2 x 2. 0.8 * 1.2 x = 0.96 3. 0.96*550 = 528 4. 550-528 = 22
January 1, 2013

the science of the mind (psychology)
yes I believe it is c as well
January 1, 2013

Conceptual frameworks (theoretical frameworks) are a type of intermediate theory that attempt to connect to all aspects of inquiry (e.g., problem definition, purpose, literature review, methodology, data collection and analysis). Conceptual frameworks can act like maps that ...
January 1, 2013

music
awesome...just kidding. Amateur singing, dancing, theater. Horse races, playing games such as chess, etc. happy new year
December 31, 2012

maths
no offense but it is kind of hard to solve a problem to find a length when given no lengths...did you copy/paste wrong? Anyway, first when there is an angle bisection always use angle bisector theorem. also, the orthocenter is where the altitudes meet
December 31, 2012

maths
xy = 2004 x =21y 21y * y = 2004 21y^2 =2004 y^2 = 2004/21 y=sqrt 2004/21 plug in to get x
December 31, 2012

maths
or u could guess seeing that a camel cannot be split into quarters or sqrts. thus it must be a number less than 100 which is a square and divisble by 4...so the answer is 36
December 31, 2012

maths
went in forest: 1/4 x in mountain: 2\sqrtx x - 1/4x - 2\sqrtx = 15 3/4 x - 2sqrtx = 15 square both sides 9/16x^2 - 4x = 225 divide both sides by 9/16 x^2-64/9x = 400 x^2 - 64/9x -400= 0 use factoring
December 31, 2012

maths
second die : 2,3,5 to get 7, must be 5,4,2 probability = likely outcomes / all outcomes i think it is 1/2 - don't trust me not a reliable source
December 31, 2012

altitude triangle inequality
hi guys ive be struggling on this problem for a couple of days, so please help if you can Problem:Two altitudes of a triangle have lengths 12 and 14. What is the longest possible length of the third altitude, if it is a positive integer? Thanks in advance and merry christmas: ...
December 31, 2012

math
ok, so its kinda like multiplying fractions except u flip the second one upside down(reciprocal): so 1/2 divided by 2 = 1/2 divided by the reciprocal of 2 which is 1/2 so 1/2 * 1/2 = 1/4 thus, in this case, it would be 7/9 divided by reciprocal of 3/6 = 6/3 so 7/9* 6/3 = 7/9...
December 31, 2012

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