# Posts by Knights

Total # Posts: 334

**World history; Check:P Added sentences.**

Yup, should be all right.

**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.

**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

**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

**Calculus AP**

Could you give us a diagram? OR a link to one or describe it?

**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...

**algebra**

(Meaning 7.5 was the answer sorry if I was unclear)

**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

**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

**please help with analytic geometry if you can**

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??

**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.

**analytic geometry helps are appreciated**

thanks a bunch sire

**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??

**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...

**analytic geometry helps are appreciated**

thank you very much it helps a lot!!!

**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??

**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

**math**

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

**Maths**

Uh....I can't read it...

**Please help on geometry - analytic geometry**

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

**Please help on geometry - analytic geometry**

ok thanks

**Please help on geometry - analytic geometry**

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?

**Biology**

* Natural

**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 ...

**social studies !**

type in behindthename . com /names/usage/ancient-roman

**Help please with reflection problem!?**

Thank you very much it helps a lot!!

**Help please with reflection problem!?**

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 ...

**Geometry - please help - reflections**

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 ...

**Math**

65 ....

**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)

**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

**Math**

look for combos or just add 2+8 + 20 + 5 + 11+14 +17 = 10+25+25 + 17 = 60 + 17 = 77

**maths**

1,1,1,7 1,1,2,6 1,1, 3, 5 1,1, 4, 4 etc.

**English**

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

**math**

sorry forgot to add, minus minus one from 162/145

**math**

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

**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

**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...

**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".

**landmarks**

wat...? could you further explain, im confuzzled.

**Organic**

could you set the equation down, thanks

**Math**

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

**Math**

convert to common denominator and compare

**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 ...

**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...

**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.

**Finance**

is it compound interest?

**math $$**

np

**math $$**

just saying angie, you don't need to post twice, but alls good.

**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) ...

**Math**

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

**MATH PLZ**

np

**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

**please help with geometry - dilation**

thanks a lot i appreciate your time

**please help with geometry - dilation**

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?

**chemistry**

further explanation needed please

**ELA**

go to thesaraus

**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 ...

**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?

**science please help**

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.

**Please help with a trapezoid - circle problem**

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 ...

**I need help on a geometry cone/frustrum problem**

Thanks a lot steve it really helps!

**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....

**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?

**Mathematics -- Geometry --**

/i got 300-34 pi

**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 ...

**Math Word Problem**

x+x+5+x+10+x+15+x+20 = 425 5x+50=425 x=75 x+20 = 95 answer = 95

**PLEASE HELP TANGENTS AND CIRCLES PROBLEM GEOMETRY**

Thank you so much guys I really appreciate it!!!

**PLEASE HELP TANGENTS AND CIRCLES PROBLEM GEOMETRY**

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 ...

**Proof math problem help? Please help if you can!**

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 ...

**Math**

14/6 = 7/3 :D

**Pre-Cal.**

and fyi 2i is an imaginary number...

**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 ...

**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 ...

**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!

**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

**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

**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 ...

**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 ...

**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

**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

**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

**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 = ?

**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!

**calculus**

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

**Maths**

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

**math**

Question: Is this math?

**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: ...

**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

**the science of the mind (psychology)**

yes I believe it is c as well

**Advanced Statistics**

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 ...

**music**

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

**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

**maths**

xy = 2004 x =21y 21y * y = 2004 21y^2 =2004 y^2 = 2004/21 y=sqrt 2004/21 plug in to get x

**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

**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

**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

**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: ...

**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...