Answer:
hints to solve each. partial answer due to lack of time, hope it helps!
Step-by-step explanation:
1)
a) solve ():
5 
+ 7 - 9 - 6 + 12 - 10 =
. (5 +7-9-6+12-10)
b) use 
= 
c) use 
= 
= 2
use 
= = 2
2)
a) use 
= 
use = 
= 2
Answer:
x=22
Step-by-step explanation:
took test on edge 2020
The correct answer is :H=-3 ............
64%, because 40% of 60% is 24%, and 2 mg of pure copper is 40% of the overall alloy, so add 24 and 40
Answer:
x = ± 
Step-by-step explanation:
9x² - 4 = 0 ( add 4 to both sides )
9x² = 4 ( divide both sides by 9 )
x² = 
( take the square root of both sides )
x = ± 
= ± 
= ±
