Which property is unique to electromagnetic waves?(1 point)
Responses
1.They can shake structures on Earth.
2.They can travel on the surface of water.
3.They can travel in a vacuum.
4.They can be controlled by the pull of gravity.
Which statement correctly describes a property of sound waves?(1 point)
Responses
1.They are generated by movements in Earth’s crust.
2.They require particles to transfer energy.
3.They can travel through outer space.
4.They have two kinds of movement.
Which type of wave is most affected by gravity from the Sun and the moon?(1 point)
Responses
1.electromagnetic
2.seismic
3.water
4.sound
How are seismic waves and sound waves similar?(1 point)
Responses
1.They are able to travel through a medium and through a vacuum.
2.They can cause vibrations or motions in the matter with which they interact.
3.They are both part of the electromagnetic spectrum.
4.They can cause significant damage as part of earthquakes.
Which type of wave is used in sonar to detect objects?(1 point)
Responses
1.electromagnetic
2.water
3.sound
4.seismic
Answer 1: The property unique to electromagnetic waves is that they can travel in a vacuum.
Answer 2: A property of sound waves is that they require particles to transfer energy.
Answer 3: The type of wave most affected by gravity from the Sun and the moon is water waves.
Answer 4: Seismic waves and sound waves are similar in that they can cause vibrations or motions in the matter with which they interact.
Answer 5: The type of wave used in sonar to detect objects is sound waves.
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Hawa owns a small business selling clothing. She knows that in the last week 5 customers paid cash, 30 customers used a debit card, and 96 customers used a credit card.
Based on these results, express the probability that the next customer will pay with a debit card or a credit card as a percent to the nearest whole number.
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To find the probability that the next customer will pay with either a debit card or a credit card, we need to add up the number of customers who paid with these methods and divide by the total number of customers:
P(debit or credit) = (30 + 96) / (5 + 30 + 96) = 126 / 131
To express this probability as a percentage to the nearest whole number, we need to multiply by 100 and round to the nearest whole number:
P(debit or credit) \* 100 = 126 / 131 \* 100 ≈ 96%
Therefore, the probability that the next customer will pay with a debit card or a credit card is about 96%.
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There is a spinner with 8 equal areas, numbered 1 through 8. If the spinner is spun one time, what is the probability that the result is a multiple of 2 and a multiple of 3?
To determine the probability that the result is a multiple of 2 and 3, we need to first find the numbers that are multiples of 2 and 3.
Multiples of 2: 2, 4, 6, 8
Multiples of 3: 3, 6
The only number that is a multiple of both 2 and 3 is 6. Therefore, there is only one outcome that satisfies both conditions.
Since there are a total of 8 possible outcomes, the probability of spinning a multiple of 2 and 3 on the spinner is:
P(multiple of 2 and 3) = 1/8
Thus, the probability that the spinner will show a result that is both a multiple of 2 and a multiple of 3 is 1/8.
what about
There is a spinner with 15 equal areas, numbered 1 through 15. If the spinner is spun one time, what is the probability that the result is a multiple of 4 and a multiple of 3?