Eight more than twice a number is greater than negative sixteen

Mathematics

2 answers:

djyliett [7]3 years ago

4 0

Answer:

2x + 8 > -16

Step-by-step explanation:

Any time you see twice a number, it means 2x because 2x indicates you are multiplying whatever the variable is by two (also known as doubling it). Whenever you see more than, it indicates addition, so now you know to add eight to that answer. Finally, place the greater than symbol and put -16 on the other side.

Natalija [7]3 years ago

3 0

Answer:

2x+8 > -16

solution:

2x> -16-8

2x> -24

x > -24/2

x > -12

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A conservative estimate of the number of stars in the universe is 6 x 10^22. The average human can see about 3,000 stars at nigh

Ilia_Sergeevich [38]

$2 \times 10^{19}$ times more stars are there in universe compared to human eye can see

<h3>Solution:</h3>

Given that, conservative estimate of the number of stars in the universe is $6 \times 10^{22}$

The average human can see about 3,000 stars at night with only their eyes

To find: Number of times more stars are there in the universe, compared to the stars a human can see

Let "x" be the number of times more stars are there in the universe, compared to the stars a human can see

Then from given statement,

$\text{Stars in universe} = x \times \text{ number of stars human can see}$

Substituting given values we get,

$6 \times 10^{22} = x \times 3000\\\\x = \frac{6 \times 10^{22}}{3000}\\\\x = \frac{6 \times 10^{22}}{3 \times 10^3}\\\\x = 2 \times 10^{22-3}\\\\x = 2 \times 10^{19}$