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aleksley [76]
3 years ago
6

light travels approximately 300,000,000 metres each second. A light year is the total distance travelled by light in one year. A

ssuming there are 365 days in a year, determine a light year, expressing your answer in standard form and with the correct unit.​
Mathematics
2 answers:
Fiesta28 [93]3 years ago
8 0

Answer: 9.45 x 10^15 m

Step-by-step explanation:

The speed of light = 300,000,000 m/s (3·00 × 10^8m/s).

Length of Earth year = 365 days

= 365 × 24 × 60 × 60 seconds = 3·15 × 10^7seconds

Now speed = distance / time ...

so ... distance = speed × time

So: 1 light year = 3·00 × 10^8 × 3·15 × 10^7

1 light year = 9·45 × 10^15 m

That's nearly 9 1/2 million, million kilometres!

Dmitrij [34]3 years ago
7 0

Answer:

109500000000

Step-by-step explanation:

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Which expression is equivalent to 1/27 ( 1 over 27 ) ?
harkovskaia [24]

Answer:

Option D

Step-by-step explanation:

Option A:

(3)¹ × (3)⁻¹⁰   =  (3)⁽¹⁻¹⁰⁾   = 3⁹

= 4\frac{1}{3^9}

= 4\frac{1}{19683}

Option B :

(3)⁻¹ × (3) ¹⁰   = 3⁽¹⁰⁻¹⁾

= 3⁹

= 19683

Option C :

(3⁻⁴) × (3)⁷   = 3⁽⁷⁻⁴⁾

               = 3³

Option D :

3⁴ × 3⁻⁷ = 3⁴⁻⁷

= 3⁻³

=  4\frac{1}{3^3}

= 4\frac{1}{27}

Therefore, option D is the answer.

3 0
3 years ago
Read 2 more answers
CAN SOMEONE HELP MEE
Artist 52 [7]

Answer:

11.45

Step-by-step explanation:

the circumference is 36 so divide it by pie then rounded it to the nearest hundredths place

7 0
3 years ago
Melissa compares the numbers 0.058 and 0.21. She thinks that 0.058 > 0.21 because 58 > 21 , but the reasoning that Melissa
adell [148]

Answer:

Step-by-step explanation:

What is the answer tho

5 0
3 years ago
Which ordered pairs are solutions to the inequality 2x + y > 8 ? Choose all answers that are correct.
gtnhenbr [62]
Hi again!

2x + y > 8

The correct answer is option D
-------------------------------------------

Honestly I don't think we can solve the equation to find the answer. What we can do is to find the boundary line. (I think you know what that is) After that, shading the appropriate area.

y > -2x + 8

Again, credit to my beautiful graphing calculator. Here is how it looks like.

6 0
3 years ago
How To Solve these? ​
Inessa [10]

Answer:

a. 15/23

b. 13/27

c. 400g

Step-by-step explanation:

a. When the denominators are the same, you can just sum the numerators.

Which becomes, 13+2=15--> 15/23

b. Same, when the denominator is the same, you can just minus the numerators. Which becomes, 25-12=13--> 13/27

c. 1kg=1000g. 1000/5=200✖️2=400

5 0
3 years ago
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