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Q: The product of 7 and b is equal to 63?

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7b = 63 Divide both sides by 7:- b = 9

a=7 b=9 ab=? ab is the multiplication of a & b there fore the value of ab=7*9=63

The asterisk * A * B = the product of A and B 2 * 7 = 14

95

I don't quite understand the phrasing of the question. In mathematics a product is the result of multiplication. If you have three numbers A, B and C Then A x B might be one product A x C might be the second product B x C might be the third product This would leave A x B x C as the fourth product. So, if we have 3, 5 and 7 then 3 x 5 = 15 3 x 7 = 21 5 x 7 = 35 and 3 x 5 x 7 = 105

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7b = 63 Divide both sides by 7:- b = 9

your equation is this 9N=63 9N/9=63/9 N=7 your answer is 7

a. 63

a=7 b=9 ab=? ab is the multiplication of a & b there fore the value of ab=7*9=63

The asterisk * A * B = the product of A and B 2 * 7 = 14

LCM(a,b) = (ab)/(GCF(a,b)) 63 factors to [3 3 7] 15 factors to [3 5] common factors: [3] 63 * 15 / 3 = 315 ■

b = 7 (74 = 2,401)

The cross product must be equal. Two fractions: A/B and C/D are equal if (and only if) A*D = B*C

(A1) The dot product of two vectors is a scalar and the cross product is a vector? ================================== (A2) The cross product of two vectors, A and B, would be [a*b*sin(alpha)]C, where a = |A|; b = |B|; c = |C|; and C is vector that is orthogonal to A and B and oriented according to the right-hand rule (see the related link). The dot product of the two vectors, A and B, would be [a*b*cos(alpha)]. For [a*b*sin(alpha)]C to equal to [a*b*cos(alpha)], we have to have a trivial solution -- alpha = 0 and either a or b be zero, so that both expressions are zeroes but equal. ================================== Of course one is the number zero( scalar), and one is the zero vector. It is a small difference but worth mentioning. That is is to say if a or b is the zero vector, then a dot b must equal zero as a scalar. And similarly the cross product of any vector and the zero vector is the zero vector. (A3) The magnitude of the dot product is equal to the magnitude of the cross product when the angle between the vectors is 45 degrees.

Then, if A nd B are scalars, it is not really surprising. If A and B are vectors then they have the same direction.

95

area of rectangle=L*B 9*7 =63

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