Answer:
I, III and IV
Step-by-step explanation:
Required
Determine equivalent expressions to 
To do this, we simplify each of the given options.

Simplify like terms


<em>This is equivalent to the given expression</em>
<em></em>

Open Bracket



Collect Like Terms


<em>This is not equivalent to the given expression</em>

Open Bracket



Simplify Like Terms

<em>This is equivalent to the given expression</em>

Open Brackets


Simplify like terms

<em>This is equivalent to the given expression</em>
<em></em>
<em>Hence: I, III and IV are equivalent to the given expression</em>
3/5 of an hour (0.6 hours)
First, find how many words Nick types in an hour by multiplying 275 * 60.
Nick types 16,500 words per hour.
Now just divide 9,900 by 16,500.
It takes Nick 3/5 of an hour to type 9,900 words. (0.6 hours)
Please consider marking this answer as Brainliest to help me advance.
Answer:
3.5
Step-by-step explanation:
These are similar triangles.
BC:AC = BD:AD
6:5 is the ratio.
Then, simply multiply:
4.2 x 5/6 = 3.5
So, x = 3.5!
-5h-3(10+h) = -6
-5h-30-3h = -6
Add/subtract like terms
-8h -30 = -6
Add 30 to both sides
-8h = 24
Divide by -8 to isolate h
h = -3
Answer:
150º
Step-by-step explanation: