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Elena L [17]
3 years ago
6

v11.1% complete This is a Single Choice Question; skip ahead to question content A B C D E Confirm The label on a ceiling lighti

ng fixture warns you to use a lightbulb of 60 watts or less. The voltage to the lightbulb is 120 volts. An intern calculated how much amperage a bulb of the maximum allowed wattage will draw. You are checking her work, shown below. If there is an error, what is the first step that has an error, and why is it an error? Step 1 volts × amps = watts write down formula Step 2 120 × ? = 60 fill in what is known Step 3 It looks like 0.5 will work 120 × 0.5 = 60 check Step 4 amps = 0.5 Step 1, because the formula should be amps = watts ÷ volts. Step 2, because the question mark should be by itself on the right side of the equation. Step 3, because you can’t just guess at a solution. Step 4, because the answer in the previous step was 60. There is no error. Report Content Errors © 2019 by ACT, Inc. All rights reserved. Terms of UsePrivacy PolicyContact Support
Mathematics
1 answer:
Brilliant_brown [7]3 years ago
4 0

Answer:

  There is no error

Step-by-step explanation:

While it is not necessary to guess an answer, because the answer can be calculated using the properties of equality, guessing is a legitimate solution method actually taught in (some) schools these days.*

The equation is properly written, data properly filled in, and the solution properly verified. There is no error.

_____

* What doesn't seem to be taught in US schools are methods of refining an incorrect guess. These are actually well-developed, and are legitimate ways to get to a good answer.

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when the temperature is 68 F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometer
Digiron [165]

Hello!

Since we are given that the speed of sound in the air travels about 343 meters per second, we can multiply 343 meters per second by 5, and then we convert the meters to kilometers.

343 · 5 = 1715 meters per 5 seconds.

1000 meters are equal to 1 kilometer. So, we can divide 1715 by 1000 to convert meters to kilometers.

1715 / 1000 = 1.715

Therefore, the speed of sound in air is about 1.715 kilometers per 5 seconds.

6 0
3 years ago
Read 2 more answers
The red Maserati traveled at a speed of 120km/h for 5 hours one day. The green Ford Pickup traveled at a speed of 74km/h for 6 h
ehidna [41]

Answer:

156km

Step-by-step explanation:

Given data

The red Maserati traveled at a speed of 120km/h for 5 hours one day.

Distance = speed*time

Distance= 120*5

Distance= 600km

The green Ford Pickup traveled at a speed of 74km/h for 6 hours

Distance = speed*time

Distance= 74*6

Distance= 444km

Hence the difference is

=600-444

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8 0
3 years ago
Please help me if you know answer
BartSMP [9]

Answer:

the answer would be 36,57,87 because it has to be equal to 180

and its an acute angle  

Step-by-step explanation:

6 0
3 years ago
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Natasha2012 [34]

Answer:

the sinθ is 4√17 / 53.6

Step-by-step explanation:

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3 0
3 years ago
The answer to this question please.
Sunny_sXe [5.5K]

Answer:

Part A) y=1,100x + 4,500

Part B) 14,400

Step-by-step explanation:

Part A)

There is a base fee of $4,500, meaning that the line begins at y=4500 (i.e. The y-intercept is [0,4500], so 'b' in y=mx+b is 4,500). There is a $1,100 hourly rate, which is proportional to the value of x, the amount of hours filmed. Therefore, 'm' in y=mx+b is $1,100.

Thus, the final equation looks like:

y= 1,100x + 4,500

Part B)

x=9

y=1,100x+4,500

y=1,100(9)+4,500

y=9,900+4,500

y=14,400

4 0
2 years ago
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