Use Polya's four-step problem-solving strategy to solve each of the following problems. Number of River Crossings Four people on one side of a river need to cross the river in a boat that can carry a maximum load of 180 pounds. The weights of the people are 80, 100, 150 and 170 pounds. a. Explain how the people can use the boat to get everyone to the opposite side of the river. b. What is the minimum number of crossings that must be made by the boat?

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A: Given problem:- In 1995 the average family income was about 40000, and in 2015 it was about 91376.…

Q: Q.28 Using appropriate identities, factorise the following: (i) 49a? +70ab+25b² (ii) 9a² +6a+1-25b²…

A: Note: as per our guidelines we can solve only 3 sub parts so please repost rest part in other…

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A: The given question has been solved in detail

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Q: Solve the system of linear equations and check any solutions algebraically. (If there is no…

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Q: a) A: and 12. [20 b = 1 The solution is: x1 = 1 X2 = 2 b) А- and b = -2 1 -5 The solution is: x1 = 2…

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A: Given query is to find the time when population exceed 895.

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Q: if t<B (-2t + 1 Given the function h(t) ={2+ 1 Determine one value for B for which the function h(t)…

A: To find the value of  B(beta) such that the given function h(t) is continuous at t= beta.

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A: We know that arc length of the curve f(x) from a to b is defined as Arc Length = ∫ab1+f'x2dx Given:…

Q: (24 – 18) + (20 – 16) – -

A: Simplify  (24-18)+(20-16)

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A: Find your answer below

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A: Given a geometric sequence.

Q: Participation Activity #12 This is similar to Try It #8 in the OpenStax text. (2+4)² (x–2) 2(x–1)2…

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Q: 9. Patterns and Games: Complete the Pattern The following images form a pattern. Image 1 Image 2…

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A: Match the following words with their correct meaning

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A: This question is based on finding an inverse of a function.

Q: Find a, for the following arithmetic sequence. S,2 = 330, a12 -55 a.

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Q: If the length of one side of a cube is 4 m. Find its Volume.

A: Length of side of cube=4m Find volume of cube

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A: Let's find.

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Q: 3+ x 2+4x 8x 8x

A: Given, =(3+x)/8x -(2+4x)/8x  =(3+x)-(2+4x) =3+x-2-4x

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Q: lim x" = a" of limits. %3D for any positive integer n, is an example of a O a. Property

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Q: O Sobve the eava tíon X-6 上3 X-4 2x-1 243 4 Kt6 3. 2X-3 V-3 X-3 3D0 X+A 4 Xt6 -3 X-h 3.

A: This question can be solved using properties of determinant.

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Q: Sketch the following graph. State the parent function, transformations and indicate th new location…

A: To solve the following problem

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Q: 2. Name the congruent parts so that each pair of triangles is congruent by SAS côngruence postulate.…

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Q: Question 1 We have the following three matrices: 7 3 6 7 A = 3 2 B = 5 4 Another 2 x 2 matrices X…

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Q: 8х + 12 Graph the function f(x) x2 4x – 12 Make sure to place a "Dot" on the graph for any Holes.…

A: Explanation of the answer is as follows