30 + 75x= 210
Subtract 30 from both sides
75x=180
Divide both sides by 75
X =2.4
Worked 2.4 hours
A 20,15, 30 amp single-pole snap switch is permitted to be used to control a lighting circuit that pulls 15 amps. Option D is correct. This is further explained below.
<h3>What is Ampere?</h3>
Generally, Ampere is simply defined as the basic metric SI unit of electrical current
A 20,15, 30 amp capacity will suffice because these capacities are equal to greater than the load in question.
In conclusion, To operate a 15-amp lighting circuit, a single-pole snap switch rated for 20, 15, or 30 amps is legal.
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Answer:
B) -3/2
Step-by-step explanation:
If [x/2]=0 then x/2 is a number such that the least integer greater than or equal to x/2 is 0. We can rewrite this as the inequality x/2≤0. Then, the value of x in C, D and E is wrong because they are positive numbers, then x/2 would be a positive number which contradicts this inequality.
Now, 0 is the least integer that satisfies this inequality, therefore we cannot have that x/2≤-1 since -1 is an integer and -1<0. Then x/2>-1. This discards A as wrong, because for x=-2, x/2=-1, contrary to x/2>-1.
Thus B is the right answer. To verify, if x=-3/2, then x/2=-3/4 and we have that -1<-3/4≤0 as required.
