• ### Can someone explain this math problem step by step?

Best answer: The problem is you have not said what the "problem" is. You have given us a fraction, but not said what is to be done with said fraction.
Best answer: The problem is you have not said what the "problem" is. You have given us a fraction, but not said what is to be done with said fraction.
1 answer · Mathematics · 2 years ago
• ### Help with a present value equation?

Best answer: p0 = (p1 + c) / (1 + y) p0(1 + y) = p1 + c p0 + p0 * y = p1 + c p0 * y = p1 - p0 + c y = (p1 - p0 + c) / p0
Best answer: p0 = (p1 + c) / (1 + y) p0(1 + y) = p1 + c p0 + p0 * y = p1 + c p0 * y = p1 - p0 + c y = (p1 - p0 + c) / p0
3 answers · Mathematics · 9 years ago
• ### Simplify. how to solve?

Best answer: (18e)^2 = 18^2 * e^2 = 324e^2 (3e)^3 = 3^3 * e^3 = 27e^3 324/27 = 12, and e^2/e^3 = 1/e, so: (324e^2) / (27e^3) = 12/e The answer is 12/e
Best answer: (18e)^2 = 18^2 * e^2 = 324e^2 (3e)^3 = 3^3 * e^3 = 27e^3 324/27 = 12, and e^2/e^3 = 1/e, so: (324e^2) / (27e^3) = 12/e The answer is 12/e
2 answers · Mathematics · 6 years ago
• ### Calculus Help Needed?

Best answer: Follow link in sources. It will even show you step by step how to arrive at the answer. You're right; it is crazy long. You're also right; the answer is not 3/2.
Best answer: Follow link in sources. It will even show you step by step how to arrive at the answer. You're right; it is crazy long. You're also right; the answer is not 3/2.
2 answers · Mathematics · 9 years ago
• ### Pre Calculus Math Equation?

Best answer: Assuming n starts at 0: T(n) = 6n + 102 If n starts at 1: T(n) = 6n + 96
Best answer: Assuming n starts at 0: T(n) = 6n + 102 If n starts at 1: T(n) = 6n + 96
3 answers · Mathematics · 9 years ago
• ### Outlier in a box plot?

Best answer: You really have to graph it, and possibly find a best-fit line, first. Then the outliers should become clear.
Best answer: You really have to graph it, and possibly find a best-fit line, first. Then the outliers should become clear.
1 answer · Mathematics · 9 years ago

Best answer: You have the right idea. The rule is you can only combine like terms. "Like terms" means those terms that have the same variables with the same exponents. Thus, x and y cannot be combined because they are different variables. And x^2 and x cannot be combined because they have different exponents. Likewise, you cannot combine... show more
Best answer: You have the right idea. The rule is you can only combine like terms. "Like terms" means those terms that have the same variables with the same exponents. Thus, x and y cannot be combined because they are different variables. And x^2 and x cannot be combined because they have different exponents. Likewise, you cannot combine 2x^2 y^4 and 2x^3 y^4. But you can combine 3xy^4 z^2 and -22xy^4 z^2. So, to answer your question, x + x + x^2 = 2x + x^2. That's as simple as it gets, unless you want to factor out an x to get x(2 + x).
2 answers · Mathematics · 9 years ago
• ### Algebra question about hyberbola?

Best answer: Because the x^2 and y^2 terms differ in sign.
Best answer: Because the x^2 and y^2 terms differ in sign.
1 answer · Mathematics · 9 years ago
• ### Simplify cd + c + d.?

Best answer: Depends what branch of mathematics this is. If it is standard algebra, it is already simplified, unless you want to factor it. Either of the following two is possible: c(d + 1) + d d(c + 1) + c If this is boolean algebra, then the cd term can be absorbed into the c and/or d term, leaving you with just: c + d
Best answer: Depends what branch of mathematics this is. If it is standard algebra, it is already simplified, unless you want to factor it. Either of the following two is possible: c(d + 1) + d d(c + 1) + c If this is boolean algebra, then the cd term can be absorbed into the c and/or d term, leaving you with just: c + d
3 answers · Mathematics · 7 years ago
• ### Math question 10 pts to winner?

Best answer: Your screen dpi shouldn't matter at all. The easiest way is to scale the image while printing to something like 24%. Just experiment until you get it correct. If you need finer grained control, then change the dpi of the image itself. That will affect how it is printed. Changing the pixel size of the image will reduce quality, as... show more
Best answer: Your screen dpi shouldn't matter at all. The easiest way is to scale the image while printing to something like 24%. Just experiment until you get it correct. If you need finer grained control, then change the dpi of the image itself. That will affect how it is printed. Changing the pixel size of the image will reduce quality, as you have observed. EDIT: you never said what OS/application you are using. The above is easy to do with Photoshop or Photoshop Elements, but not possible with Paint.NET.
1 answer · Mathematics · 7 years ago

Best answer: The value of a number given its digits a and b is 10a + b. So, the value of the number with digits reversed is 10b + a. Now subtract: 10a + b - (10b + a) 10a + b - 10b - a 9a - 9b 9(a - b)
Best answer: The value of a number given its digits a and b is 10a + b. So, the value of the number with digits reversed is 10b + a. Now subtract: 10a + b - (10b + a) 10a + b - 10b - a 9a - 9b 9(a - b)
3 answers · Mathematics · 10 years ago
• ### Find the remainder that the number 54^54 + 80^80 - 163^163 leaves when it is divided by 27?

Best answer: First, note that: 54 ≡ 0 (mod 27) 80 ≡ -1 (mod 27) 163 ≡ 1 (mod 27) So we can rewrite as: 0^54 + (-1)^80 - 1^163 (mod 27) 0 + 1 - 1 (mod 27) 0 (mod 27) The answer is 0.
Best answer: First, note that: 54 ≡ 0 (mod 27) 80 ≡ -1 (mod 27) 163 ≡ 1 (mod 27) So we can rewrite as: 0^54 + (-1)^80 - 1^163 (mod 27) 0 + 1 - 1 (mod 27) 0 (mod 27) The answer is 0.
1 answer · Mathematics · 7 years ago
• ### What is a consecutive integer?

Best answer: "Consecutive" means "next to." So, 2 and 3 are consecutive, but 2 and 4 are not.
Best answer: "Consecutive" means "next to." So, 2 and 3 are consecutive, but 2 and 4 are not.
4 answers · Mathematics · 9 years ago
• ### Maths H/W HELP PLZ!!!?

Best answer: The ratio 2:3 means that if you mix 2 litres of blue and 3 litres of red, you get 5 litres of purple. So, if you have 4 litres of blue, that is 2x the above amount, so you should also have 2x the amount of red, making 6 litres of red.
Best answer: The ratio 2:3 means that if you mix 2 litres of blue and 3 litres of red, you get 5 litres of purple. So, if you have 4 litres of blue, that is 2x the above amount, so you should also have 2x the amount of red, making 6 litres of red.
1 answer · Mathematics · 6 years ago
• ### I don't know how to do this?

Best answer: Let t be the time to orbit the sun, d the distance from the sun, and k some constant. The above law then translates to: t^2 = kd^3 Now substitute for Mars to find k: 689.13^2 = k(142*10^6)^3 474900 = k(2.863288*10^24) k = 1.65858*10^(-19) Substitute for Earth to find t: t^2 = 1.65858*10^(-19) * (93*10^6)^3 t^2 =... show more
Best answer: Let t be the time to orbit the sun, d the distance from the sun, and k some constant. The above law then translates to: t^2 = kd^3 Now substitute for Mars to find k: 689.13^2 = k(142*10^6)^3 474900 = k(2.863288*10^24) k = 1.65858*10^(-19) Substitute for Earth to find t: t^2 = 1.65858*10^(-19) * (93*10^6)^3 t^2 = 133409 t = 365.25
2 answers · Mathematics · 6 years ago
• ### ABC is a right-angled triangle..?

Best answer: 22a. Memorize well the definitions of sin, cos and tan. This is a direct application of the definition. Tan is opposite over adjacent, so tan x = 17/6. 22b. Angle DBC is half of 90 degrees, or 45 degrees. Also, from part (a) we have: tan x = 17/6 x = arctan(17/6) x = 70.56 degrees Next, angle BDC = 180 - x - DBC = 180 - 70.56... show more
Best answer: 22a. Memorize well the definitions of sin, cos and tan. This is a direct application of the definition. Tan is opposite over adjacent, so tan x = 17/6. 22b. Angle DBC is half of 90 degrees, or 45 degrees. Also, from part (a) we have: tan x = 17/6 x = arctan(17/6) x = 70.56 degrees Next, angle BDC = 180 - x - DBC = 180 - 70.56 - 45 = 64.44. Finally, use the law of sines: BD / sin x = 6 / sin 64.44 BD = 6 * sin 70.56 / sin 64.44 BD = 6.272
3 answers · Mathematics · 8 years ago
• ### Convert the polar equation to rectangular form?

Best answer: tan θ = tan (3π/4) y/x = -1 y = -x You should be able to see this intuitively if you imagine all points on the line through the origin at angle 3π/4.
Best answer: tan θ = tan (3π/4) y/x = -1 y = -x You should be able to see this intuitively if you imagine all points on the line through the origin at angle 3π/4.
2 answers · Mathematics · 8 years ago
• ### Simple Calculus problem that I don't remember how to go about it?

Best answer: (I have edited my answer to be simpler) The easiest way to solve this type of problem is to look at the quadratic formula. x = (-b ± √(b^2 - 4ac)) / (2a) You can see that a repeated root means the part under the square root must be 0: b^2 - 4ac = 0 Just substitute and you have c: 22^2 - 4 * 8 * c = 0 484 = 32c c =... show more
Best answer: (I have edited my answer to be simpler) The easiest way to solve this type of problem is to look at the quadratic formula. x = (-b ± √(b^2 - 4ac)) / (2a) You can see that a repeated root means the part under the square root must be 0: b^2 - 4ac = 0 Just substitute and you have c: 22^2 - 4 * 8 * c = 0 484 = 32c c = 121/8 I assume you meant the answer key said 15.125 and not 15.15 as you wrote. Note that 121/8 = 15.125. Further note that the other answer, if you complete it, comes to the same value. Thus, both our answers, plus your key all agree.
3 answers · Mathematics · 9 years ago
• ### Special Angles Type 3 HELP ME PLEASEE?

Best answer: First one: the angle between the secants is equal to half the difference between the two intercepted arcs: (x - 40)/2 = 30 x - 40 = 60 x = 100 ============== Third one: 1) angle ADB is half the intercepted arc BA, so it is 68/2 = 34. 2) angle BDH is a right angle since it is the intersection of a radius and a tangent. 3) angle ADH = ADB... show more
Best answer: First one: the angle between the secants is equal to half the difference between the two intercepted arcs: (x - 40)/2 = 30 x - 40 = 60 x = 100 ============== Third one: 1) angle ADB is half the intercepted arc BA, so it is 68/2 = 34. 2) angle BDH is a right angle since it is the intersection of a radius and a tangent. 3) angle ADH = ADB + BDH = 34 + 90 = 124. ============== Fourth one: The other arc is 360-x. Similar to #1, the angle between the tangents is half the difference between the two arcs: (360-x - x)/2 = 70 360 - 2x = 140 220 = 2x 110 = x
2 answers · Mathematics · 7 years ago
• ### How many integers x are there in the range 1<=x<=500 such that x is not divisible by 2, 3, and 5?

Best answer: So, to clarify, we are looking for the number of integer from 1 to 500 inclusive which are not divisible by any of 2, 3 and 5. The number divisible by any of the three is: [500/2] + [500/3] + [500/5] - [500/6] - [500/10] - [500/15] + [500/30] 250 + 166 + 100 - 83 - 50 - 33 + 16 366 So the total not divisible by any of 2, 3 and 5 is... show more
Best answer: So, to clarify, we are looking for the number of integer from 1 to 500 inclusive which are not divisible by any of 2, 3 and 5. The number divisible by any of the three is: [500/2] + [500/3] + [500/5] - [500/6] - [500/10] - [500/15] + [500/30] 250 + 166 + 100 - 83 - 50 - 33 + 16 366 So the total not divisible by any of 2, 3 and 5 is 500 - 366 = 134.
6 answers · Mathematics · 7 years ago