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Maurinko [17]
2 years ago
5

The school student council sponsor a switch day where students were able to switch classes every 20 minutes the students are in

school for seven hours if a student switches as often as possible how many classrooms in all did that student visit
Mathematics
2 answers:
djyliett [7]2 years ago
8 0
60*7=420/20=21 the anwser is 21 
allochka39001 [22]2 years ago
3 0
The answer is 21 I am sure
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19. Find the current in a circuit if the power is 500 W (watts) and the resistance is 25 ohms. Round off your answer to two deci
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Answer:

A

Step-by-step explanation:

The formula that relates current, power and resistance is

I=\sqrt{\frac{P}{R}}

Where

I is the current (in amperes)

P is the power (in watts)

R is the resistance (in ohms)

We know P = 500 and R = 25, we plug them into the formula and solve for I:

I=\sqrt{\frac{P}{R}}\\I=\sqrt{\frac{500}{25}}\\I=\sqrt{20}\\ I=4.47

Correct answer is 4.47 Amperes, or choice A.

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WILL MARK BRAINLIEST!! Im on edge 2020!
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Answer: 80% of x = 20

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