Question

A robin flew rr meters per second, and a cardinal flew cc meters per second. The birds flew for tt seconds. The expression t(r-c)t(r?c) describes how many more meters the robin flew than the cardinal flew during that time. What does (r-c)(r?c) represent in this context?

Answer 1

the answer is C

Explanation:

I got it right on khan

Answer 2

(r-c)(r?c) represents speed

Explanation:

we know formula of distance

s=vt

if we exclude t from it then it remains only speed v

same in the case t(r-c)t(r?c) when we excludes t

then it remains (r-c)(r?c) which is equal to speed

hence proved.