Answer:
Its my first answer but may i have a brainlist please im new
Step-by-step explanation:
Answer:
see below
Step-by-step explanation:
Because there is the right angle symbol on the chart these angles are complementary meaning thety have a sum of 90°.
Answer:
B
Step-by-step explanation:
2Mg + O2 --> 2MgO
Answer:
6 kilograms
Step-by-step explanation:
Oldest = 2x
Middle = x + 5
Youngest = x
2x + x + 5 + x = 57
combine like terms
4x + 5 = 57
subtract 5 from both sides
4x = 52
divide both sides by 4 to isolate x
x = 13
Oldest = 2x = 2(13) = 26
Middle = x + 5 = 13 + 5 = 18
Youngest = x = 13