4-1a #14 Classify each of the following statements as true or false: a. If every digit of a number is divisible by 3, then the number is divisible by 3.  b. If a number is divisible by 3, then every digit of the number is divisible by 3. Give examples A problem solving approach to Mathematics for elementary school teachers

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A: Given: The equation x∘y=x2+y2 in the N natural numbers set

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A: Given: -1225 To check:If -1225 is in the span of Φ=1100, 1001, 0110, 0011 or not.

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Q: I notice I didn't put letter c. in this problem.  c. A number is divisible by 3 if, and only if,…

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Q: c) List vertically all the ways each number 0-35 can be represented as a sum of two or more…

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Q: If a is an even number, then a³ is an even number.

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Q: How many 3-digit number can be formed from the digits 0,1,2,3  a. if no two digits are to be the…

A: * SOLUTION :-  from the given information the calculation is given below

Q: "find A2, A−2, and A−k (where k is any integer) by inspection."

A: NOTE: Refresh your page if you can't see any equations. . use the diagonal matrix formula

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Q: If a, b, and c are real numbers, the associative property of multiplication states that = a(bc).

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Q: A retailer uses a lock box to store the keys to a house that is for sale. The access code for the…

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Q: z²+15 c. z²-4z-45 2.

A: Given z2+15z2-4z-45Lets equate the numerator and denominator to zeroz2+15=0z2=-15z=±3.87i

Q: "There is no largest integer."

A: Given: To explain the given statement as follows,

Q: where did the 26 and 10 come from?

A: where did the 26 and 10 come from?