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olga55 [171]
3 years ago
10

PLEASE HELP ASAP WILL MARK THE BRAINLEST DUE TODAY NEED YA'LL HELP

Mathematics
2 answers:
tangare [24]3 years ago
3 0

Answer:

nitrogen

Step-by-step explanation:

By far, the most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. Oxygen is the next most abundant gas, present at levels of 20 to 21%

taurus [48]3 years ago
3 0

Question 1.

Out of the options I would say Nitrogen is the most abudnats in Earth's atmosphere.

Question 2.

The best answer is the thermosphere, molecules with enough energy can escape through this atmosphere.

Question 3.

The troposphere is the most dense, it's 5 to 9 miles long. Basically every type of weather is in this region.

Question 4.

The mesosphere is where meteorites burn before reaching the surface of Earth.

Question 5.

The exosphere is extremly low, the farther you are away from Earth the lower the density.

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A boy saves 80p a day, How much does it take him to save $40
laiz [17]

Answer:

50 Days

Step-by-step explanation:

I'm not sure what the unit "p" is, but I believe it is pennies so. $40/0.80 gives you 50 which is the amount of days it would take for you to get to $40 if you receive 80 cents a day

8 0
2 years ago
Latoya has b decks of cards . Each deck has 52 cards in it , what is the expression for the total numbers of cards latoya has
Lerok [7]

Answer:

52b

Step-by-step explanation:

She has 52 cards per deck, and b decks.

This means she has 52b cards.

How this works:

For 1 deck, she has 52 cards, or 52×1 cards.

For 2 decks, she has 104 cards, or 52×1 cards.

For 5 decks, she has 260 cards, or 52×5 cards.

For 10 decks, she has 520 cards, or 52×10 cards.

Therefore, for b decks, she has 52×b, or 52b cards.

**This content involves writing algebraic expressions, which you may wish to revise. I'm always happy to help!

6 0
3 years ago
8x42+3x59-62=n. What does "n" equal?
vitfil [10]
Answer: n=451 8*42+3*59-62=n 336+177-62=n 451=n n=451
6 0
3 years ago
Find the circumference
tia_tia [17]

Answer:

6.25\pi

Step-by-step explanation:

A circumference of a circle can be determined by this: 2*pi*r

We're given the diameter. Divide that by 2 to get the radius.

6.45/2 = 3.225

Now multiply that by 2*pi. That gives us 2 * 3.14 * 3.225 = 20.253.

This could've also been done easier by doing pi*d where d is the diameter and you give the answer by multiplying them both. Also works, but the above formula is just key to many things and can also be used to derive the simpler one. Hope it helps! :)

7 0
2 years ago
Read 2 more answers
2x(5+3x)-x find the coefficient of x
s344n2d4d5 [400]

To start, we need to distribute

multiply 2x by <em>everything</em> in the parenthesis

2x (5 + 3x) - x

2x × 5 = 10x

2x × 3x = 6x²

now we have...

10x + 6x² - x

<em>simplify </em>

<u>6x² + 9x </u>

the coefficient of x is 9!

4 0
3 years ago
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