Question

4. The temperature at noon at a certain place was 12 degrees above zero. If it decreases
at the rate of 2 degrees per hour until midnight, at what time would it be 10 degrees
below zero?
give step by step ans​

Answer 1

Answer:

12 noon

Step-by-step explanation:

Here an AP is formed

a=12,d=-2,l=-10

let the temp goes -10 degree after n hrs

as l=a+(n-1)d

so -10=12+(n-1)(-2)

-22=(n-1)(-2)

n-1=-22/-2=11

n=12

hence tem pwill be -10 deg after 12 hr

at 12 noon