I only know this because I remember the common fractions, and 1/3 is .3333 repeating.
Remmeber you can do anything to an equaiton as long as you do it to btoh sides
5-6(a+2)=7+a
distribute
5-6a-12=7+a
add like terms
-6a-7=7+a
add 6a both sides
-7=7+7a
minus 7 both sides
-14=7a
divide by 7
-2=a
a=-2
Answer:
9.03x10^16---------1.5x10^-7 helium
2.709x10^24-------4.5 nitrogen
1.9264x10^28-------3.2x10^4 hydrogen
4.8782x10^14--------8.1x10^-10 xenon
Step-by-step explanation: i got it right PERIOD PURRRRR
Step-by-step explanation:
Cost = $112
30% discount coupon on the item he's going to buy
=$112 × 30/100 (or you can write 30%)
=$168/5 ($33.6)
7% tax on the item=$112 × 7/100(or you can write 7%)
= $196/25 ($7.84)
Total amount altogether=$112 - $33.6 - $7.84
=$70.56
not sure for the answer^^
This is the graph that the equation shows:
