To subtract two rational expressions, when do we need to find a common denominator?
when there are like numerators
A.)when the numerator is zero
B.)when there are unlike numerators
C.)when there are like denominators
D.)when there are unlike denominators

Please help only one shot

there will be 35 boys in each team. : )

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.