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Binomial distribution: find the probability that in 10 tosses of a coin you will get 3 to 6 heads
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1 day ago
0.75%*4=
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Find the slope of the tangent line to the graph of y= X^2 + 2 at X=1
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1 day ago
1.5x - 3 when x = 3
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1 day ago
Solve geographically and graphically x+y=6 Xy=2
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1 day ago
In a box there are 4 identical indistinguishable balls numbered from 0 to 3. Remove them at random successively and without exchanging two balls from the bag. Let Z be the queried variable "product of said numbers". For a certain value of K, we have that: P(Z = K) = 1/2. What is the value of K?
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1 day ago
Here are some fun, tricky and hard to solve maths problems that will challenge your thinking ability. If 1=3 2=3 3=5 4=4 5=4 Then, 6=?
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A reviewer is passed through by an electric current of 15 mA when a potential difference of 120v is applied to stop the resistance
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How does the expression 7 x (6+5) compare to the expression 6+5? Explain how you know.
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The rest energy E of an object is given by Albert Einstein's famous equation E=mc2, where c is the speed of light in a vacuum. Calculate E to three significant figures for an electron with mass m=9.11x10-31 kg. The SI unit for E is the Joule (J); 1 J= 1 kg*m/s2. The speed of light is 2.99792458x108 m/s
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1 day ago
A square field measuring 100.00m by 100.00 m has an area of 1.00 hectare. One acre has an area of 43,600 square feet. If a field has an area of 12.0 acres, what is its equivalent in hectares?
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1 day ago
Let X be a discrete random variable with range {1, 3, 5} and whose probability function is f(x) = P(X = x). If it is known that P(X = 1) = 0.1 and P(X = 3) = 0.3. What is the value of P(X = 5)?
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1 day ago
Of the tools produced with a certain manufacturing process, 10% are defective. Using: a) the binomial distribution and b) the Poisson approximation to the binomial distribution, find the probability that in a sample of 10 tools chosen at random exactly 2 are defective.
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1 day ago
In an electronic circuit, a multimeter is used that returns the following measurements of current intensity at different points in the circuit: 0.050 A, 10.050 A and 0.101 A. How many significant figures do these measurements have?
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1 day ago
A cylindrical can, open at the top, is to hold 250cm^(3) of liquid. Find the height and radius that minimize the amount of material needed to manufacture the can. Enter your answer with rational exponents, and use pi to represent \pi . Radius = Height=
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1 day ago
Determine f-1 (x) the reciprocal function of f(x) = 3x+5/ 4x -1
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1 day ago
A street light is at the top of a 11.5ft. tall pole. A man 5.9ft tall walks away from the pole with a speed of 6.5 feet per sec along a straight path. How fast is the tip of his shadow moving when he is 35 feet from the pole? Hint: Draw a picture and use similar triangles.
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1 day ago
Solve the following derivatives using rules and derivative algebra (give the simplified result). f(x)= (4x - 1)/(2x^2+3x-1)
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1 day ago
-5(3x+1)+7(5x-2)
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1 day ago
One producer pays $52 of VAT per unit on one good, the VAT rate is 15.8%, the exchange rate between dollar and yen is 0.00545$/yen and he makes a return of 23% on the price VAT included. What is the cost per unit, in yen?
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1 day ago
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