Question

PLEASE ANSWER

IT IS URGENT ​

Answer 1

x+y+z=9

Step-by-step explanation:

${2}^{x} . {5}^{y} . {7}^{z} = 98 \times {10}^{3} \\ {2}^{x} . {5}^{y} . {7}^{z} =2 \times 7 \times 7 \times {(2 \times 5)}^{3} \\ {2}^{x} . {5}^{y} . {7}^{z} = {2}^{4} \times {5}^{3} \times {7}^{2} \\ comparing \:bases \: and \: powers \\ we \: get \\ x = 4 \\ y = 3 \\ z = 2 \\ x + y + z = 9$