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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. 63

(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.

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

b = 7 (74 = 2,401)

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

Since the formula for the area of a triangle is: A = .5 x h x b just go 63 = .5 x b x 18 then 63 = 9b 7 = b

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

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

3 x 7 x 7 x a x b

No because if a=4 and b=4 then a=b and not a can equal 6 and not b can equal 5 so ~a is not = to ~b

When one or both of the integers is/are zero.a*b=0 if a=0, b=0, or both a and b are equal to 0. In other words, if one or both integers are zero.

-9, -7 You could use an equation to figure this out. x is the first number and x+2 is the second number. The equation becomes (x)(x+2) = 63. x comes out to b 7, and x plus 2 is 9. Since a negative times a negative is a positive, those numbers can be changed to -7 and -9.

95

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 ■

The product of the two whole number is 13*7=91 This is because when u add both equations (a+b=20 with a-b=6) then u can get a=13 and b=7

A = B !A = !B So Not A = Not B

: The product of the means is equal to the product of the extremes. When you cross multiply to show 2 fractions are equivalent. Ex a/c =b/d so cross multiplying would show a x d = c x b c x b are the means a x d are the extremes Their products are equal in a proportion or equivalent fractions that is the answer and it is correct

a + b = 21 so a = 21 - b; 3a = 4b so 3(21 - b) = 4b ie 63 - 3b = 4b so 7b = 63 making b = 9 and a = 12

A+B=163 so A=163-B and B=163-A

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

Basically, if numbers "a" and "b" are multiplicative inverses, it means that their product is equal to 1.

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

3 x 7 x 7 x a x b x c = 147abc

Neither are commutative: a - b does not equal b - a, and a/b does not equal b/a. Neither is associative: (a - b) - c does not equal a - (b - c), and (a/b)/c does not equal a/(b/c).

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