Find use the distributive property and bring down the ending result (21)
-3x-6=21
Next, add 6 on both sides and you should get:
-3x = 27
The last step is, you divide -3 from 27 and you end up with 9. So, the total answer is x = 9
Answer:
The decibel level of sound is 50dB greater on a busy street than in a quiet room where the intensity of sound is 10^-10 watt/m^2. The intensity of sound in the busy street is watt/m^2?
Step-by-step explanation:
Ok this is the best i've got.
Take an example: The salary per hour:
Assume x (variable) is the number of hours worked and assume THAT THE RATE PER HOUR IS $10, then:
If you work x hours at the hourly rate of$10, you will generate an income,
say, y that is equal the number of hours worked by the rate per hour, that is:
y = 10.x. The more hour(x) you work, the more income(y) you get.
Hence we created a relationship between y and x , or in English, between the earning and the number of hours worked.
Moreover y depends on x, if there is no x, there is no y and if x increases, y increases. However x is an INDEPENDENT variable because you can
give to x any number & y will follow
*The answer is A. 24.*
All you have to do is back solve. In other words, just plug your answer choices into the equation.
Exact form:
5/7
Decimal form:
0.71428571...
