04/30/21

Probability question
A code consists of six digits chosen at random from 0 to 9.the code can begin with a zero and digits can be repeatedhow many codes will end with 0 ?how many will contain the digits 2018 together... more
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04/30/21

3D ratio math help needed.
There are three cuboids, A, B and C, the length of A is (1/2) the length of B, and (1/3) the length of C, the width of of A is (2/3) the width of B and (3/2) the width of C and the height of A is... more
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04/30/21

3.3: Solving Trig Equations using Identities
cot(−x)cos(−x)+sin(−x)=−1/f(x)f(x)=
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04/30/21

Applications of Integration
How would you prove the volume of a cone equation by rotating the line about the x-axis if you have (h,r) and (h,0)? Start by finding the equation of the line.
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04/30/21

Work required to pump
A water tank has the shape of an upright cylinder with radius 𝑟 = 1 meter and height 10meters. If the depth of the water is 5 meters, how much work is required to pump all thewater out the top of... more
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04/30/21

how many times should I flip a biased coin
If I have a Biased coin, where the probability of Heads (P(h)) is 37% and probability of Tails (P(t)) is 63%,Head I win $2, Tails I lose $1 And I start with a starting balance of $10, How many... more
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04/30/21

A cable hangs in a curve that is symmetrical with respect to the y-axis.

The tension, T (in Newtons) of the cable at a point x metres from the y-axis is given by 𝑇 = 200 (𝑒^x/10 + 𝑒^−𝑥/10). Find the maximum and minimum tension if the cable extends from 𝑥 = 10 to 𝑥 = −10... more
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04/29/21

Geometry question

A kite flown by Emily attains an altitude of 200 feet above ground level. If the angle of elevation of the kite is 72 degrees what is the length of the string to the nearest foot?
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04/29/21

Tentukan Koefisien Variasi (Variance) masing-masing dan jelaskan hasil perhitungan tersebut.
Seorang peneliti ingin mengetahui variasi nilai mahasiswa laki-laki dan perempuan, maka diambil sampel masing-masing sebanyak 6 orang dan hasilnya adalah sebagai berikut : Laki-laki   : 6 8 6 10 9... more
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04/29/21

Probabilty related question
1. The marriage register data shows that 5 % of male and 0.25 % of female are divorcee. Now let us consider that a divorcee person is chosen at random, what is the probability that the chosen... more
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04/29/21

Prove the Following:
Given: BR = PA, ∠IAB ≅ ∠NBP, IR ⊥ IA, and NP ⊥ NBProve: IR = NP
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04/29/21

Graph the function and then compute the integral using area.
5∫ 4x dx2
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04/29/21

Find the derivative using the definition of the derivative for 𝑓(𝑥) = 2𝑥^3 + 5𝑥 − 3
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04/29/21

Find the area of the region bounded below by the graph of f and above by the x-axis from x = 1 to x = 2.
f(x) = x2 − 4x + 3
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04/29/21

Solve for the x in interval [0,2π) Sec^2 x=4
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04/29/21

Find the instantaneous rate of change, using the definition, of f(x)=5x^2+4x at x=3
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04/29/21

Find the intervals on which f(x)= cos²x on [-𝛑, 𝛑] is increasing and decreasing
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04/29/21

The sum of a number and its reciprocal is 50/7. Find the number. List all possible solutions. The answers must be reduced fractions or integers.
The sum of a number and its reciprocal is 50/7. Find the number.List all possible solutions. The answers must be reduced fractions or integers.
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04/29/21

Find a simplified form of the expression below:
1-sin(x) cot(x) cos(-x) please help me
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04/26/21

Calculus Related Rates
A boat is pulled into a dock by means of a rope attached to a pulley on the dock. The rope is attached to the front of the boat, which is 10 feet below the level of the pulley. If the rope is... more
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04/26/21

Water is flowing into a vertical cylindrical tank or radius 2 meters at a rate of 8 cu. meters per minute. How fast is the water level rising?

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04/26/21

At what point on the curve x = 3t^2 + 5, y = t^3 − 7 does the tangent line have slope 1/2 ?
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04/26/21

Find a unit vector orthogonal to both u and v.
u = i + 2jv = i + 3k
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04/26/21

Find the taylor series generated by f(x) = 7x^3 + 2x^2 + 8x - 3 at x = 2
I got $ 77 + 100(x-2) + 44(x-2)^2 + 7(x-2)^3 + 0 $ but I can't find the pattern to simplify in sigma notation.
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04/26/21

About 8% of the population has a particular genetic mutation. 800 people are randomly selected. Find the standard deviation for the number of people with the genetic mutation in such groups of 800.
About 8% of the population has a particular genetic mutation. 800 people are randomly selected.Find the standard deviation for the number of people with the genetic mutation in such groups of 800.
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