The first one is 75% i think I dont know if thats the answer though hold on and I'll get you the others
<span>x-y=11 2x+y=19
x=11+y
2(11+y)+y=19
22+2y+y=19
3y=-3
y=-1
x=11-1=10</span>
Answer:
correspond to the four place values- ones, tens, hundreds and thousands. When a number is written in standard form, each group of digits is separated by a comma which forms a period.
X\times 2 bc it is correct I think I’m not sure but yeah