• Is 1030 meters bigger then 1,500 meters?

    10 answers · 20 hours ago
  • What is answer 4x-5=4x+10?

    17 answers · 2 days ago
  • 5,000 is 1/10 of?

    11 answers · 2 days ago
  • 4 (x + 12) < 16 What is the answer?

    9 answers · 1 day ago
  • Is 1 billion a real number?

    24 answers · 4 days ago
  • What does dy/dx mean?

    Best answer: Suppose you're on a hill and you want to calculate the slope of it (i.e. how much it rises for a given horizontal distance). Well, you can take two points on the hill and divide rise with run. But what if the hill is super bumpy and uneven? The method gives the average slope between two chosen points, but what... show more
    Best answer: Suppose you're on a hill and you want to calculate the slope of it (i.e. how much it rises for a given horizontal distance).
    Well, you can take two points on the hill and divide rise with run.

    But what if the hill is super bumpy and uneven? The method gives the average slope between two chosen points, but what if you want the slope at the *exact* point you're standing at? Like if you were to put a ball at your feet, would it roll off or not?

    Obviously you want to reduce the "averageness" in your calculation which is done by bringing the two points closer together so it more closely approximates the exact slope where you're standing.
    By bringing the points closer and closer your answer gets more accurate, and when you bring them SO close that they become the SAME point, then the slope is exact. And that is a derivative.

    For this much closeness we need some sort of limit in our definition of derivative because we are bringing Δx to 0 and a limit is the only thing that allows you to divide with 0 while still making sense.
    So there is obviously a difference between an *approximation* where Δx is small but not 0, and the exact answer where Δx ---> 0. In that context Δx turns to dx so you can distinguish between the two.
    9 answers · 1 day ago
  • 6:30am to 3:00pm how many hours?

    11 answers · 2 days ago
  • What does this equal <2?

    9 answers · 2 days ago
  • What is the smallest power of 2 greater than a million?

    Best answer: One million has 7 digits (1,000,000). A 7-digit product requires two 4-digit numbers, assuming each factor has the same number of digits. Of course, you can go all the way to a 7-digit number and a single digit and still get a 7-digit number. The smallest power of 2 that achieves a 4-digit number is 10; 2^10 =... show more
    Best answer: One million has 7 digits (1,000,000). A 7-digit product requires two 4-digit numbers, assuming each factor has the same number of digits. Of course, you can go all the way to a 7-digit number and a single digit and still get a 7-digit number. The smallest power of 2 that achieves a 4-digit number is 10; 2^10 = 1,024. Square that, and you get 2^20, which is 1,048,576. 2^19 doesn't work (that's 524,288).

    20 is the smallest INTEGER power of 2 that produces a result greater than one million. Whoever used logarithms gave you a more accurate answer in terms of any real number power of 2.
    7 answers · 17 hours ago
  • X^3 + 4x^2 -x - 4 > 0?

    Best answer: The factored version that you gave shows that you need to check the intervals (-infinity,-4), (-4,-1), (-1,1), and (1,+infinity), as each such interval will produce values that are either all positive or all negative. That's because the ONLY zeros are at -4, -1, and +1. So, plug in x = -5, and what do you... show more
    Best answer: The factored version that you gave shows that you need to check the intervals
    (-infinity,-4), (-4,-1), (-1,1), and (1,+infinity), as each such interval will produce values that are either all positive or all negative. That's because the ONLY zeros are at -4, -1, and +1.

    So, plug in x = -5, and what do you get? I get -125 + 100 + 5 - 4 = -24. Therefore, the entire interval (-infinity,-4) will produce results less than 0, and it is NOT part of the solution set. Next, if I plug in x = -2, I get
    -8 + 16 + 2 - 4 = +6, so the interval (-4,-1) is part of the solution set. Next, when x = 0 I get -4, so the interval (-1,1) is not part of the solution set. And finally, if I plug in x = 2, I get 8 + 16 - 2 - 4 = 18, so the interval (1,infinity is part of the solution set.

    The whole solution set is
    (-4,-1)U(+1,infinity).
    6 answers · 17 hours ago
  • Maths: Ratios?

    Rectangles A and B are similar. The area of A is 30.195cm.The lenght of B is 6.1 cm. Each dimension of B is 2/3 the corresponding dimension of A. What is the perimeter of B?
    Rectangles A and B are similar. The area of A is 30.195cm.The lenght of B is 6.1 cm. Each dimension of B is 2/3 the corresponding dimension of A. What is the perimeter of B?
    8 answers · 2 days ago
  • What is the salary? 10 points!!?

    What would be the salary if i make $30.00 an hour and work 37 hours per week?
    What would be the salary if i make $30.00 an hour and work 37 hours per week?
    5 answers · 36 mins ago
  • How do i spilt 3,959 with 10 people?

    7 answers · 20 hours ago
  • Is pi really equal to four?

    Best answer: pi = π
    π = 3.14159265358979323846264338327950288419...
    Best answer: pi = π
    π = 3.14159265358979323846264338327950288419...
    5 answers · 3 hours ago
  • Each of the numbers 1 through 20 is written on a separate card and placed in a box. If a single card is drawn at random from..?

    from the box what is probability that it bears an odd number or a prime number?
    from the box what is probability that it bears an odd number or a prime number?
    5 answers · 1 day ago