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Radda [10]
2 years ago
9

The distance from Betelgeuse to Earth is known to be between

Mathematics
2 answers:
dimaraw [331]2 years ago
3 0

Using proportions, it is found that 400 light years have 3.6 \times 10^{18} meters.

  • To find how many meters are 400 light years, we use proportions, with a rule of three.
  • One light year has 9 \times 10^{15} meters.
  • How many meters are there in 400 light years, which in scientific notation, is 4 \times 10^2 light years?

The<u> rule of three</u> is:

1 light year - 9 \times 10^{15} meters.

4 \times 10^2 light years - x meters

Applying cross multiplication:

x = 9 \times 10^{15} \times 4 \times 10^2 = 36 \times 10^{17} = 3.6 \times 10^{18}

Thus, 400 light years have 3.6 \times 10^{18} meters.

A similar problem is given at brainly.com/question/23536327

mixer [17]2 years ago
3 0

Answer:

Step-by-step explanation:

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Answer:

Option A is correct answer

4 0
3 years ago
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Jakob is tiling a newly finished room.He estimates that he tiles about 9 square ft every 3/4 hour. About how many sq ft can he t
Ganezh [65]
Okay this is how I would figure this out:
I would take 9 divided by 3 and get 3, so he can tile abut 3 square ft. in 15 minutes.
Then, I would multiply 3 by 4 because there are 4 15 in an hour. I would get 12.
So it takes Jakob 1 hour to tile 12 square feet. 

Your answer is: He can tile about 12 square feet per hour.

Hope this helped :)
4 0
3 years ago
Chelsea bought a computer on Monday for $1,300. Its value is predicted to decrease by $250 per year. Her brother George also bou
Elenna [48]

Answer:

The correct answer is B. George’s computer is expected to have a value of $25 greater.

Step-by-step explanation:

Since Chelsea bought a computer on Monday for $ 1,300, and its value is predicted to decrease by $ 250 per year, while her brother George also bought a computer on Monday, and the function g (x) = 1,100 - 175x predicts how the value of his computer is expected to change after x years, to determine whose computer is expected to have a greater value when it is 3 years old, and how much greater will it be, the following calculation must be performed:

Chelsea:

1,300 - (250 x 3) = X

1,300 - 750 = X

550 = X

George:

1,100 - (175 x 3) = X

1,100 - 525 = X

575 = X

Therefore, George’s computer is expected to have a value of $ 25 greater.

7 0
3 years ago
Help Me!48 divided by 3/8?
expeople1 [14]
Work out 3/8 of 48.

First of all divide 48 by the denominator:

48 ÷ 8 = 6 (this gives 1/8 of 48)

Now multiply this answer by the numerator:

6 × 3 = 18 (this gives 3/8 of 48)
5 0
3 years ago
Read 2 more answers
Can u guys help me please
vesna_86 [32]
1.) 25%
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3.) 25
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3 years ago
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