Here you have the solution. If you are interested in the law which I have used here, you can read about countinuity of fluid principle.
Emma is now 24 years old then Ben would be 2E, or 48 years old.
<h3>What is a system of equations?</h3>
A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
Let B and E be Ben's and Emma's current ages, respectively.
We have given that;
Ben's age is currently twice of his sister, Emma.
B = 2E
and
8 years ago, Ben's age was 2 and a half times that of Emma's age
B-8 = 2.5(E-8)
We can substitute the value of B from the first equation into the last one
B-8 = 2.5(E-8)
(2E)-8 = 2.5(E-8)
2E-8 = 2.5E- 20
-0.5E = -12
E = 24
Thus, Emma is now 24 years old then Ben would be 2E, or 48 years old.
Learn more about equations here;
brainly.com/question/10413253
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The answer would be 50% bc if you add all the coins together you get 100 and bronze is 50/100 which is 50%
Answer:
-60p-1
Step-by-step explanation:
10.5
Two ways. Mathematically you can do 3x2 for the square portion of it and then 3x1.5 for the triangle
Or you can just count the full squares then the half’s
