the north american x - 15 rocket - powered aircraft is the world’s fastest manned plane on record. it…

the north american x - 15 rocket - powered aircraft is the world’s fastest manned plane on record. it travels about 7×10³ kilometers per hour. the duck hawk is the world’s fastest bird, traveling at speeds over 3×10² kilometers per hour. about how much faster is the plane? 3×10² km/h 7×10³ km/h im still not sure. less than 20 times faster more than 20 times faster exactly 20 times faster

the north american x - 15 rocket - powered aircraft is the world’s fastest manned plane on record. it travels about 7×10³ kilometers per hour. the duck hawk is the world’s fastest bird, traveling at speeds over 3×10² kilometers per hour. about how much faster is the plane? 3×10² km/h 7×10³ km/h im still not sure. less than 20 times faster more than 20 times faster exactly 20 times faster

Answer

Explanation:

Step1: Calculate the ratio of the plane's speed to the bird's speed

$\frac{7\times10^{3}}{3\times10^{2}}$

Step2: Simplify the ratio using exponent rules

$\frac{7}{3}\times10^{3 - 2}=\frac{7}{3}\times10^{1}=\frac{70}{3}\approx23.33$

Answer:

C. more than 20 times faster