1. What would you measure your mass with?
a. mg b. g c. kg
2. What is a simpler way to write 12d+7d+5-3d+2d? (add together all the numbers with �hd�h keep the �hd�h after the total)
My Guesses:
1. kg
2. I have two answers:
I am pretty sure it is: 24d-5
OR
my other answer (I do not think this one is write) is: 18d+5
Please help me! Thank you so much.
a. Yes, kg is more convenient, but you really could use any of those units.
b. 18d+5 is the correct answer
How did u figure #2 out?
12d, 7d, 2d and -3d add up to +18d.
The +5 doesn't get added to anything else.
1. To measure your mass, you would typically use kilograms (kg). Kilograms are the standard unit of measurement for mass.
2. Let's simplify the expression 12d+7d+5-3d+2d step by step:
First, combine all the terms with the same variable (d):
12d + 7d + 2d - 3d = 18d
Now, let's combine the constants (numbers without variables):
5
So, the simplified expression is: 18d + 5.
Your first answer, 24d-5, is incorrect because you added the coefficients of all the terms without considering the signs. The coefficient of 12d is positive (+12), the coefficient of 7d is positive (+7), the coefficient of 2d is positive (+2), and the coefficient of -3d is negative (-3). Therefore, the sum of 12d, 7d, 2d, and -3d is 18d, not 24d. Additionally, you mistakenly subtracted 5 instead of adding it to the final result.
Your second answer, 18d+5, is the correct simplification.
I hope this clears up any confusion!