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3 years ago

Which layer of the atmosphere reflects radio waves back to Earth? Mesosphere Stratosphere Thermosphere Troposphere BRAINLEST

Mathematics

2 answers:

hodyreva [135]3 years ago

7 0

Answer: Thermosphere

It EZ

nataly862011 [7]3 years ago

6 0

Answer:

ionosphere

Step-by-step explanation:

In radio communication, skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere, an electrically charged layer of the upper atmosphere

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What is 1/3 of 675 is left

Tom [10]

1/3 of 675 is 225
I hope that helps

5 0

3 years ago

A jeweler had a fixed amount of gold to make bracelets and necklaces. The amount of gold in each bracelet is 7 grams and the amo

OlgaM077 [116]

Answer:

3 necklaces and 12 bracelets

Step-by-step explanation:

Bracelets = x +4

amount of necklace gold = 20*x

amount of gold in bracelet = 7*(x+4)

added together = 109 gm

20x + 7(x+4) = 109

20x + 7x+28 = 109

27x+28=109

-28 -28

27x= 81

/27 /27

x=3 necklaces

then bracelets = 3+4=12

6 0

3 years ago

234.A 124/B 136.B 156.D

makvit [3.9K]

I think it’s D. 156 degrees

7 0

3 years ago

What is the area of rectangle ABCD?

MA_775_DIABLO [31]

Answer:

18 square units

Step-by-step explanation:

you multiply the base by the hight after graphing the square.

6 0

3 years ago

Determine whether the relationship between the circumfrance of a circle and its diameter is a direct variation. If so, identify

kipiarov [429]

Answer:

The relationship between the circumference of a circle and its diameter represent a direct variation and the constant of proportionality is equal to the constant $\pi$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y=kx$

where K is the constant of proportionality

In this problem we know that

The circumference of a circle is equal to

$C=\pi D$

therefore

the relationship between the circumference of a circle and its diameter is a direct variation and the constant of proportionality is equal to the constant $\pi$

3 0

3 years ago