Answer:
The sum of the interior angles of any triangle is equal to 180 degrees.
Let sister be s. Matthew, M
Matthew is 7years older than twice the age of his sister
M = 7 + 2s
13 = 7 + 2s. 7 crosses the equality to other side and becomes -7
13 - 7 = 2s
6 = 2s Divide both sides by 2
6/2 = 2s/2
3 = s
Sister is 3 years old.
The answer is D; could you make me the brainiest? Because the answer is 81m+27t
Answer:
Option 3
Step-by-step explanation:
When it says 12 less, that means -12.
Hope I helped. :)
Answer:
$84
Step-by-step explanation:
Simple Interest = Interest rate*Principle*number of years
= (3÷100)*$700*4
=$84
