Which postulate or theorem can be used to
prove that A PQR is similar to A PST?

SSS Similarity Theorem
AS Similarity Postulate
SAS Similarity Theorem
ASA Similarity Theorem

AA Similarity Postulate

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

step 1

Verify the proportion of the corresponding sides

substitute

----> is true

Corresponding sides are proportional

Triangle PQR is similar to Triangle PST

That means

Corresponding angles must be congruent

side QR is parallel side ST

and

----> by corresponding angles

--> by corresponding angles

so

PQR is similar to PST by AA Similarity Postulate

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

75%

step-by-step explanation: