Question

Q.13. If Sin x = 1/sqrt 3 then value of Cos x will be:

Q.14.x power n * x power nm will be:

Q.15. A metallic alloy consists of 3 metals X, Y & Z and have proportionate weight ratio of 1:2:3. What will be the weight of metal Z if the total weight of the alloy is 300 kg ?
(A) 150 kg (B) 100 kg (C) 50 kg (D) None of these

Q.16. If (x2 – 4y2) = 16 and (x + 2y) = 4, find out the value of (x – 2y):
(A) 2 (B) 4 (C) 8 (D) None of these

Q.17. How you will calculate current by ohm’s law ?
(A) V / R (B) V R (C) R / V (D) None of these

Q.18. If A/B= 2/3, B/C= 5/4, C/D= 3/2 then A/Dis equal to: (A) 2/3 (B) 5/4 (C) 3/2 (D) 4/5

Q.19. A rectangle has a perimeter of 28 m and area of 40 m power 2. What are its length and breadth ? (A) 8, 6 (B) 7, 7 (C) 8, 5 (D) 10, 4


(x^m)*(x^mn) is ?​

Answer 1

Step-by-step explanation:

q.13 ans. 2/√3

q.14 ans. x^nm=(x^n)^m

q.15 ans. 180 kg

q.16 ans. d)none of these

q.19 ans. d)10,4