which triangle is similar to triangle ead?
a.) triangle bac
b.) triangle dac
c.) triangle abc
d.) triangle cde

option: d is the correct answer.

          d.) triangle cde.

step-by-step explanation:

since, in δead and δcde we have:

∠ead≅∠cde (as the measure of both the angles are equal as both   are right angles)

also ∠dea≅∠dec (as both the angles are same)

hence, by aa similarity we state that δead and δcde are congruent.

      hence, option: d is the answer.

(d) triangle cde

step-by-step explanation:

given: δead with ∠ead=90°

to find: a triangle which is similar to   δead.

solution: from δead and δcde, we have

∠ead=∠cde (each90°)

∠ced=∠dea (reflexive)

thus, by aa similarity, triangle ead is similar to triangle cde.

therefore, cde is the only triangle which is similar to triangle ead.

hence, option d is correct.

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is: