Answer:
There are 3 terms
Step-by-step explanation:
5x, 3y, and 10 are terms so there are three. Terms a separated by signs (like + or -)
The GCF of both 42 & 50 is 2.
Answer:
x=10
y=25
Step-by-step explanation:
3x-10+5x+30+6x+20=180
14x+40=180
14x=180-40
14x=140
x=10
9x-10=4y-20
9(10)-10=4y-20
90-10=4y-20
80=4y-20
80+20=4y
100=4y
25=y
Answer:

Step-by-step explanation:
Given
--- Intensity
Required
Determine the decibel level (D)
This is calculated as:

Where:
The threshold intensity

So, we have:

This gives:


Apply law of indices


Apply law of logarithm

So, we have:


So:


<em>Hence, the decibel level is 50</em>
52 tests because you would multiply 28 by 100 then divide by 54. You would get 51.851, but you cannot have and 8th of a test, so you would round up