Question

help me with these please in under 2 hours =)
I will give brainliest to best answer

5253c775d94b6a46d26eaeba7e54e9cb.pdf

Answer 1

Answers:

1. (a)4n + n = 4 × 2n = 8n

       5n + 2 - 2n + 3 = 5n - 2n + 2 + 3 = 5n + 3

  (b) (3n + 2) × 2 = (3n × 2) + (2 × 2) = 6n + 4

2.(a) 1 hr 25 mins ? 1.25 hrs

1.25 hrs = $1\frac{25}{100}$hr = $1\frac{1}{4}$hr = $\frac{5}{4}$ hr = $\frac{5}{4}$hr × 60 mins = 75 mins = 1 hr 15 mins.

Now we know that (1 hr 25 mins > 1 hr 15 mins)

1 hr 25 mins is larger time interval.

   (b) 1 hr 25 mins - 1 hr 15 mins = duration

then duration = 10 mins

The duration between 1 hr 25 mins and 1 hr 15 mins is 10 mins.

(Couldn't understand 3rd question)

If you liked the answer of 1 and 2, please mark me as Brainliest.