D

D

\(1m53cm=1\dfrac{53}{100}cm\)

Nhanh chóng sơ tán khỏi khu vực bị ảnh hưởng

A.SUM

B

\(\left(1-2x\right).5^4=3.5^5\)
\(1-2x=3.5^5:5^4\)
\(1-2x=3.5=15\)
\(2x=\left(-14\right)\)
\(x=\left(-7\right)\)

C

\(f\left(-2\right)=2.\left(-2\right)+3=\left(-4\right)+3=\left(-1\right)\)

4,5.\(\dfrac{1}{3}=\)\(\dfrac{9}{6}=\dfrac{3}{2}km\)
\(\dfrac{3}{2}:\dfrac{18}{60}=\dfrac{3}{2}:\dfrac{3}{10}=\dfrac{30}{6}=\)5km/h