Write an expression to represent the perimeter of 2a-3 and 2a and 3a+1

Adding all of the expressions together, (2a-3+2a+3a+1), would equal 7a-2. I hope my answer helps!

7a-2

Step-by-step explanation:

 to represent the perimeter of 2a-3 and 2a and 3a+1

The given sides are 2a-3 and 2a and 3a+1

To find out the perimeter we add all the sides

Now combine like terms to add the terms

2a+2a+3a becomes 7a

-3+1 is -2

Now the perimeter becomes

An expression to represents the perimeter is 7a-2

c is the correct answer

step-by-step explanation:

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg