6 is the answer I believe
X-y=200
xy=mn
so
first equation times -1 and add x both sides
y=x-200
sub that for y in other equation
x(x-200)=min
x²-200x=min
take deritivive
2x-200=min
find where it equals 0
2x-200=0
2x=200
x=100
y=x-200
y=100-200
y=-100
the numbers aer 100 and -100
Answer:
470
Step-by-step explanation:
1323 rounds to 1320
443 rounds to 440
409 rounds to 410
1320 - (440 + 410) =
1320 - 850 =
470 <===
It
is given that ∠B ≅ ∠C. Assume AB and AC are not congruent. If AB >
AC, then m∠C > m∠B by <span><span>the triangle parts relationship theorem</span>. If AC > AB, then m∠B > m∠C for
the same reason.
However, using the given statement and the definition
of congruency, we know that m∠B = m∠C.
Therefore, AB = AC and AB ≅ AC.</span>