Stephanie starts out on run covering 100 m in 10 minutes. She then accelerates to a speed of 15 m/min in 10 seconds. What is her acceleration?

30 m/min²   (= 0.0833 m/s²)

Step-by-step explanation:

Initially,

Distance ran = 100 m

Time taken = 10 min

Average speed = Distance ran ÷ Time taken

= 100 ÷ 10

= 10 m/min

Hence here initial speed = 10 m/min

Given that her final speed was 15 m/min

her change in speed = 15 - 10 = 5 m / min

We are also given that  this change in speed  took 10 seconds = 1/6 min

Recall that by definition, acieration = rate of change of speed

= change in speed ÷ time taken for change

= 5 m/min ÷ (1/6) min

= 30 m/min²   (= 0.0833 m/s²)

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

it is x=-4

step-by-step explanation: