D) x^2 + 7x + 12 is the answer
-9m+81-m^2+9m = 81 - m^2 (final answer since -9m and 9m cancels each other out)
Answer: X=2, PR=40
Step-by-step explanation:
given that the two triangles are equal/congruent
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solve for x
10x+5=25
10x=20
x=2
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solve for y
33=7y-2
35=7y
y=5
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solve for PR
PR=8y
PR=8(5)
PR=40
Hope this helps!! :)
Answer is
SSS <span>Similarity </span><span>Postulate
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Let t represent the # of hours required for the west-east flight.
Then (540 mph)(t) = 2700 miles, and t = 5 hours. Flying east-west should take 1 hour less, or 4 hours.
This east-west speed would be 2700 miles / 4 hours = 675 mph (answer)