i need solutions for all of them

4. proportion is given. Choose the wrong equality. NONINISINGING 13-b 5. How many pairs of the following numbers are reciprocal numbers? 1.- and -1- 2. 1.5 and -1.5 3. - and 0.8 4. -0.25 and 4 5. 0.5 and -0.5 A) five of them B) three of them C) one of them D) four of them E) two of them 6. (3a?b)3(-=ab2)2 How many times the degree of a monomial is greater than its coefficient? A) 3 B) 15 C) 5 D) 7 E) 8 7. Factor 9x3 + 9y3 A) 9(x - y ) (x +xy+y3 ) B) 9(xty)3 c) 9( x+ y)(x2 - xy+ yz) D) (3x - 3y) 3 E) (3x + 3y) 3 8. Simplify the following expression 6x3 25 - x2 x - 5 18x2 A)-*+5x 3 B) x2 - 5x C) 3x2 + 15x D) E) 3x - 5 9. Find the value of the following expression V5 . VIZ V20 A) 9 B) 3 C)= D) E) V3 10. Given the first term a1=39 and the common difference d=-3 of an arithmetic sequence. Find fifth term of this sequence. A) -3 B) -6 C) 6 D) 84 E) 81