13. A 20 foot board is cut into two pieces. The first board is 5 feet less than 4 times the second board. Find the length of both pieces of board.

Step-by-step explanation:

First board is 3 feet and the second board is 17 feet.

4x-5=y and x+y=20. You can substitute the first equation into the y value of the second equation so it would be x+(4x-5)=20, which simplifies to 5x-5=20, and x=3. Then you can do 20-3=17 to find the length of the second board. Hope that helps

45.36 feet per second.

step-by-step explanation:

to find the most accurate determination for the number of feet per second tyrone traveled on his way to work let us convert miles to feet and minutes to seconds.

1 mile = 5280 feet.

1 minute = 60 seconds.

now we will divide 158400 by 3492 to find the most accurate determination for the number of feet per second tyrone traveled on his way to work.

therefore, tyrone traveled on his way to work at the rate of 45.36 feet per second.