It’s twelve because you multiple x by 12 and get y.
Answer:
not sure if they really want numbers here
x and 14x??
Step-by-step explanation:
Answer:30
Step-by-step explanation:
3/10x=90
Use reciprocal to multiple both sides
x=answer
Answer:
x=15
Step-by-step explanation:
the angle 7x+12 and 63 are on opposite sides of complimentary, meaning they add to 180.
180-63 = 117
117-12 = 105
105/7 = 15
Group 17. They combine with alkali metals and form salt, the are reactive, they have 7 electrons in their outer energy level
