Question

what should be instead of x? a)$4^{5} *4^{x} = 4^{8}$ b)$x^{5} * 3^{4} = 3^{9}$ c)$\frac{2^{8} }{x^{3} } = 2^{5}$ d)$\frac{8^{x} }{8^{3} } = 8^{4}$

Answer 1

answe...............x=3

Answer 2

Answer:

(a) 3

(b) 3

(c) 2

(d) 7

Step-by-step explanation:

(a) 4^5 X 4^x = 4^8

x = 5+x = 8

x = 8-5

x = 3

(b) x^5 X 3^4 = 3^9

x^5 = 3^9/ 3^4

x^5 = 3^(9-4)

x^5 = 3^5

x = 3

(c) 2^8/x^3 = 2^5

2^8/2^5 = x^3

x^3= 2^(8-5)

x^3 = 2^3

x= 2

(d) 8^x/8^3 = 8^4

8^x= 8^4 X 8^3

8^x = 8^(4+3)

8^x = 8^7

x = 7

Note: The capital x stands for multiplication and the small x stands for the variable.