Question

sent ils final position from A?
Fig. 2.2
3. Reena climbs up 5 stairs every second and then climbs down 2 stairs over the next second. How many
seconds will she take to climb 60 stairs?
4. Start with the integer -8. Add -12 to it subtract 10 from the result Divide the result​

Answer 1

Answer:

She will climb 60 stairs in 39 seconds.

Step-by-step explanation:

Reena climbs up 5 stairs every second.

She climbs down 2 stairs over the next second.

The total climb for Reena is 3 stairs per 2 seconds.

Total stairs she has to climb is 60 stairs

So she should take (60/3) *2=40 seconds.

Since at the last second she will not fall, she will reach a second before, that is by the 39th second.

Answer:

-30

Step-by-step explanation:

-8

(-8) + (-12)=

-20

(-20) - (-10) =

-30

-30/2 =

-15

-30/3=

-10

-30/5=

-6

-30/6=

-5

-30/10=

-3