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3 years ago

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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Williiam lost 25% of his marble,gave 1/6 of the remainder to his.Brother and had 120 marbles left.How many marbles did he have a

bija089 [108]

Answer:

Number of marbles with Williams at the starting = 192

Step-by-step explanation:

Let total number of marbles with Williams = m

He lost marbles = 25% of the total number

= $\frac{25}{100}\times m$

= $\frac{m}{4}$

Remaining marbles with Williams = m - $\frac{m}{4}$

= $\frac{3m}{4}$

He gave marbles to his brother = $\frac{1}{6}$ th of the remaining marbles

= $\frac{1}{6}\times \frac{3m}{4}$

= $\frac{m}{8}$

Remaining marbles after giving marbles to his brother = 120

Therefore, $\frac{3m}{4}-\frac{m}{8}=120$

$\frac{6m}{8}-\frac{m}{8}=120$

$\frac{5m}{8}=120$

m = $\frac{120\times 8}{5}$

m = 192

Number of marbles with Williams at the starting = 192

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