300m because area is Length x width and it's 3x as big as 10 meters it's 30 x 10= 300
Answer:
x=3 y=-1
Step-by-step explanation:
3x+2y=7
x-y=4
Remember that exponentioal rule
x^m times x^n=x^(m+n)
therefor
7^4 times 7^-6=7^(4-6)=7^(-2)
remember the other rule
x^-m=1/(x^m) so
7^-2=1/(7^2)=1/49
answe ris A
Answer:
90
Step-by-step explanation:
100%-10%=90%
90%->81
10%->9
100%->9+81=90