The first thing you want to do in this equation is get rid of the parenthesis. Because 4-2 is added to (3b+6) you cannot distribute the 2. However, there is an invisible 1 next to the parenthesis, so you can use that. Additionally, I like to change subtraction to addition of a negative number. It makes things a little less confusing.
4+ -2 + 3b + 6
Now just combine the like terms.
4 + -2 = 2
6+ 2 = 8
So the simplified version of your problem is: 3b + 8
Answer:
I think it is D , but if it not plz forgive me
Question:
A lighthouse is located on an island 3 miles from the closest point on a straight shoreline. If the lighthouse light rotates clockwise at a constant rate of 9 revolutions per minute, how fast does the beam of light move towards the point on the shore closest to the island when it is 52 miles from that point
Answer:
The beam of light moves at
miles/min
Step-by-step explanation:
This question is illustrated with the attached image
Taking the instructions in the question, one at a time.
A revolution of 9 per minute implies that:


Take tan of the angle in the attachment:

Differentiate both sides with respect to time

Rewrite as:

In calculus:
-- Chain rule
So:

In trigonometry:

So:

Recall that:






Recall that: 


Multiply both sides by 3



miles/min
Hence:
The beam of light moves at
miles/min
Answer:$600
Step-by-step explanation:
450 divided by 9 equals 50 that’s how much the shirts cost
So if you multiply 50 times 12 you get 600
Well do you have the amount of students in her class?