Answer:
a = 12 years
Step-by-step explanation:
Mark is 6 years older than his brother Sam. Now, we are asked to represent Sam’s age by a. This means that if Sam is a years old, Mark is (a + 6) years old.
The sum of their ages is 30, this means that when we add their ages together, we get the sum of thirty.
Mathematically this means a + a + 6 = 30
2a + 6 = 30
This is the equation needed to get a. To get a , we proceed to solve the equation to completion.
2a = 30 - 6
2a = 24
a = 24/2
a = 12
Answer:
i think it's 2/5
Step-by-step explanation:
Hopes this helps if it don’t than sorry:
Answer: p + 5 - 7q
Amayo943,
Remember that with exponents you have to multiply the number of exponets by the same number it's in for example: 
In this case you need to know that:
Therefore your answer is "225."
Hope this helps!
Sample space is all possible outcome of an event.and denotes in a set form{}
If u flipa coin twice then sample space={HH,TT,HT,TH}
