1. Take the 4x and add it to the 6x = 10x (always do x first, makes it easier)
2. Subtract 45 from -105 = -150
3. Divide 10 from -150 = -15
4. x is less than or equal to -15
Answer:
answer is the frist picture
Step-by-step explanation:
Answer: A. 1 in. : 3.6 ft.
Step-by-step explanation: In order to get the scale on the blueprint we just have to divide the measure in real time by the number of the blueprint, if we know that there´s a wall that is 21.6 feet long, and in the blue print is 6 inches long we just divide it: So now we know that for every inch in the blueprint there has to be 3.6 feet on the real construction.
Answer:

Step-by-step explanation:
Given
-- initial

Required
The exponential equation
The exponential equation is

Where

We used minus, because the rate decreases..
So, we have:



So:


Hence:

Answer:
25
Step-by-step explanation:
12/x = 48/100
48/100 = 0.48
12 = 0.48x
12/0.48 = 25