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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So we know that they spend $100 on the candles. In order to make a $125 profit, they must sell $225 worth of candles. Each candle sells for $4.50, so:
4.5x > 225 is the inequality for that. It just means $4.50 times the number of candles has to be more than the $225 we need. To simplify it, just divide both sided by 4.5:
x > 50
They have to sell more than 50 candles. Make sense?
Answer:
y= 1/4x + 1
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
7r+18=r²
r²-7r-18=0
factorizing
r²+2r-9r-18=0
r(r+2)-9(r+2=0
(r-9)(r+2)=0
r-9=0
r=9
check
(r²)=(9*9)=81
7r+18=7(9) + 8=81
