4. round off
(a) 4.918 m to the nearest 0.1 m,
(b) 9.71 cm to the nearest cm,
(c) $10.982 to the nearest ten cents,
(d) 6.489 kg to the nearest -
- kg.
100

Rounding off means estimating precisely

(a) 4.918 m to the nearest 0.1 m

So the answer will be: 4.9 m

(b) 9.71 cm to the nearest cm,

So the answer will be: 10 cm

(c) $10.982 to the nearest ten cents,

So the answer will be: $11

(d) 6.489 kg to the nearest - kg.

So the answer will be: 6.5 kg

I hope it will help you!

an altitude of 15,000 feet

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!