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3 years ago

If a alien lived for 4 light years away and came to earth in how long is that

Mathematics

1 answer:

ollegr [7]3 years ago

3 0

Answer:

268,447,489 years

Step-by-step explanation:

We can use dimensional analysis to solve this problem.

There are approximately 5.879 x 10^12 miles/ light year

Therefore, 4 Ly (5.879 x 10^12 miles / Ly) = 2.3516*10^13 miles.

We are given a speed of 10 miles/hr

So, 2.3516 x 10^13 miles (1 hr/10 mi)(1 day/24 hrs)(1 yr/365 days) = 268447488 years or 2.684 x 10^8 years.

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Analyze the diagram below and complete the instructions that follow.

docker41 [41]

Answer:

x = 8 sqrt(2)

Step-by-step explanation:

Since this is a right triangle

sin 45 = opp side/ hypotenuse

sin 45 = 8/x

Multiply each side by x

x sin 45 = 8/x *x

x sin 45 = 8

Divide each side by sin 45

x sin 45 /sin 45 = 8 /sin 45

x = 8 / sin 45

We know sin 45 = 1/ sqrt (2)

x = 8 / 1 / sqrt(2)

x = 8 sqrt(2)

5 0

4 years ago

This diagram is not correct

Stels [109]

Wait, can you see the diagram?

3 0

3 years ago

Megan had 516 pennies. She wanted to place the pennies into nine stacks, with the same amount in each stack. How many more penni

NISA [10]

Answer:

522

Step-by-step explanation:

516 divided by 9 is 57.34

she would need 522 pennies and she would end up with 9 stacks of 58 pennies

6 0

3 years ago

Read 2 more answers

Please answer 2.) a and b!

KatRina [158]

1.a. correct

1.b. $\sqrt{121} - \sqrt{9} = 11 - 3 = 8$

1.c. correct

1.d. $-\sqrt{36} - \sqrt{100} = -6 - 10 = -16$

2.a. 7 - x + 3w - 9

Terms: 7, -x, 3w, -9

Variables: x, w

Coefficients: -1, 3

Constants: 7, -9

2.b. -g + 8k - 3 - 7

Terms: -g, 8k, -3, -7

Variables: g, k

Coefficients: -1, 8

Constants: -3, -7

3.a. correct

3.b. correct

3.c. -5+ 4x = -x

4.a. 4(2x + 3) = 8x + 12

4.b. -2(3x + 4) = -6x - 8

4.c. -5(2x - 3) = -10x + 15

7 0

3 years ago

I need help. What is the slope?

ioda

Answer:

It would be either -5/5 or -1

5 0

2 years ago

Read 2 more answers