<h2>
Answer:</h2>
<h2>
Step-by-step explanation:</h2>
If resistors are in series, so the current 
is the same in all of them. In this problem we have four resistors. So, we can get a relationship between the Equivalent resistance of series combination and the four resistors as follows:
is the total resistance 
. Moreover:
Therefore:
Answer:
Positive
Step-by-step explanation:
refrigerator is 210, so it positive.
Answer:
They gave Americans confidence that victory over Britain was possible. You are welcome. :)
Step-by-step explanation:
Its fairly straightforward. Since the bottom equation only has one unknown,x, because y=1.3, you can plug y in and solve for x. Once you find the value of x, you then have the value for two variables, x and y, and again have one unknown coefficient a. To solve for the coefficient you just plug in your y value (1.3) and your x value (which can be rounded to 0.42). Using a little bit of algebra, you can then solve for a which should be a=2.108. I am not sure if your teacher wants you to solve it this way but you could also use the elimination method or substitution method that you would of learned when discussing system of equations. But no matter which way you do it, the math follows the rules. Hope this helps. I’d suggest you solve it yourself to double check my work.
To verify my credibility,
I am a Mechanical Engineering major w/ minor in mathematics
Answer:
30
Step-by-step explanation:
120/4 = 30
<em>Hope this helps</em>
<em>-Amelia</em>
