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Soloha48 [4]
3 years ago
8

How do we use electromagnetic energy? No googled answer

Mathematics
2 answers:
Elena L [17]3 years ago
8 0

Answer:

Microwave,communication,radio

Step-by-step explanation:

sergeinik [125]3 years ago
8 0
Radio waves, microwaves, I fared radiation, visible light, x-rays, and gamma radiation.
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Write an integer for each situation. 3 miles below sea level u may solve the other ones?
Evgen [1.6K]

"3 miles below sea level" may be written as -3. The negative indicates you are below sea level. Going above sea level means the value would be positive.

"earning 45 dollars" can be written as +45 or simply 45. If you lost 45 dollars, then it would be -45. If you are in debt 45 dollars, then it would be -45.

"moving back 5 spaces" is represented by -5 whereas moving forward 5 spaces is +5 or simply 5.

6 0
3 years ago
Read 2 more answers
Find the value of y.<br> Please help asap. I've been on this for ages.
anastassius [24]

Answer:

53.50

Step-by-step explanation:

168 is the circumference so i divided it by pi (3.14)

5 0
3 years ago
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.5 parts
Hunter-Best [27]

Answer:

The value of the test statistic is t = 2.1

Step-by-step explanation:

Our test statistic is:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the expected value, \sigma is the standard deviation and n is the size of the sample.

The level of ozone normally found is 7.5 parts/million (ppm).

This means that \mu = 7.5

The mean of 24 samples is 7.8 ppm with a standard deviation of 0.7.

This means that X = 7.8, \sigma = 0.7, n = 24

Test Statistic:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

t = \frac{7.8 - 7.5}{\frac{0.7}{\sqrt{24}}}

t = 2.1

The value of the test statistic is t = 2.1

7 0
3 years ago
you walk into a room.on the bed,there 2 dogs, 4 cat, a girrafe, 5 cows and a duck.there are also three chickens flying above the
Tems11 [23]

Answer:

50 legs

Step-by-step explanation:

We know that a dog has 4 legs, a cat has 4 legs, a giraffe has 4 legs, a duck has 2 legs, and a chicken has 2 legs. So, we want to calculate 2(4)+4(4)+1(4)+5(4)+1(2)+3(2), right?

Wrong! It's a trick question! The chickens aren't on the floor, so they don't count. So, we really want 2(4)+4(4)+1(4)+5(4)+1(2).

We multiply it out to get 8+16+4+20+2.

We add these up to get 50.

So, our answer is \boxed{50} legs.

6 0
2 years ago
What is the area of the right trapezoid? Please answerrr
Vanyuwa [196]

Answer:

A = 56 in²

Step-by-step explanation:

the area (A) of a trapezoid is calculated as

A = \frac{1}{2} h (b₁ + b₂ )

h is the perpendicular height between bases and b₁, b₂ the bases

here h = 7 , b₁ = 10 , b₂ = 6 , then

A = \frac{1}{2} × 7 × (10 + 6) = 3.5 × 16 = 56 in²

6 0
2 years ago
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