Answer: 92/3 OR 30 2/3 ??
Step-by-step explanation:
Answer:
5y
Step-by-step explanation:
10
You multiply 3x - y = 3.
So then it's:
6x - 2y = 3
-2x + 2y =6
which equals 4x = 9
Answer:
Randy is 48 years old
Sandy is 12 years old
Todd is 27 years old
<em></em>
Step-by-step explanation:
Given
Represent their ages with the first letters of their names:



Required
Determine their individual ages
We'll solve the above equations using substitution method of simultaneous equations
Substitute 15 + S for T and 4 * S for R in 
This gives:


Collect Like Terms


Divide through by 6


<em>This implies that Sandy is 12 years old</em>
Substitute 12 for S in
and 




<em>This implies that Randy is 48 years old and Todd is 27</em>
Answer: 70 Degrees
Step-by-step explanation:
65+45=110
180-110=70 degrees