10a+35b=0; 21a-35b=217 ...associative property of addition
31a = 217 .............addition property of equality
a = 7 .....................division property of equality
2(7) +7b = 0 --------------substitution property of equality
14+7b = 0 -----------------mulplication property of equality
7b = -14 --------------subtraction property of equality
b = -2 ----------------simplify
Answer:
1,000
Step-by-step explanation:
20
20×10×5=1,000
Answer:
15.71
Step-by-step explanation: I did It on a peice of paper and it's a mess so yeah......
The answer is 1 I’m pretty sure
True false true cause look it up and you will figure it out