B. A quadrilateral equals 360, a triangle 180. 360-180=180
Answer:
-6
Step-by-step explanation:
Answer:
44, 46, and 48
Step-by-step explanation:
add them and you should get 138.
Answer:
Randy is 48 years old
Sandy is 12 years old
Todd is 27 years old
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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>
A cube has 8
A square has 4