Astronomers measure large distance in light years one light year is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles suppose a star is 13.4 light years from earth in scientific notation how many miles away is it

Step-by-step explanation:

To calculate the distance between the star that is 13.4 light years away from the earth, you just have to multiply 13.4 by 5,880,000,000,000, which is how many miles there are in a light year.

So you´d get:

To convert this into scientific notation, you just have to count how many numbers are there after the first numeric value, in this case how many numbers are there after the first seven.

There are 13 numbers after the first seven now you just add a decimal point after the seven and add a , the X is the number of numeric values after the decimal point, since in this case there are 13 numeric values after the decimal point we added, we just add the 13 instead of the X:

And the number in scientific notation would be:

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

your answer is  

a.

5

step-by-step explanation: