Answer:
5,470 mg
Step-by-step explanation:
108 minutes is 4 half-lives:
<u> Time</u> <u> Lead</u>
<u> Min.</u> <u>mg Pb</u>
0 87520
27 43760
54 21880
81 10940
108 5470
I'm pretty sure the answer is A because you're multiplying each number by 105 and A is the only answer with 105
Hey there!
On this problem, we have to combine like terms. A like term in this sense doesn't have to have the same coefficient, but it has to have the same variable.
Our like terms are 2m and 4m, along with 3 and 5.
When we add 2m and 4m we get 6m, and when we add 5 and 3 we get eight.
Notice how 5 and three are like terms because they're both whole numbers and don't have any variables.
Your solution is 6m + 8.
My advice to you is pay attention to your like terms and don't mix them up. A strategy is to underline like terms in the same color.
Hope this helps!
The dash on each side of the triangle show that those three sides have the same measurement. Therefore, divide 24 by 3 to get 8, which is the measurement for each side of the triangle.
Meaning your answer is:
a. 8cm, 8cm, 8cm
