Lets x = Mary's age
Emily is there years older than twice her sister Mary's age = 2x + 3
Sum of both is less than 30:
x + 2x + 3 < 30
Solve for x
3x + 3 < 30
3x < 27
x < 9
Mary's age = 9
Inequality represents Mary's possible age:
0 < x < 9
Answer is the second one
0 < x < 9
Answer: none of the above
Step-by-step explanation:
this is complementary angle meaning two angles have to add up to 90 degrees.
the only answer is 45 degrees which is not listed as an option so it is none of the above
The answer is 7 :) Hope this helps
