that is right correct answer
Answer:
diagram and the SAS Congruence Postulate to prove the two triangles are congruent. Explain Henry's mistake. LOGICAL REASONING Decide whether enough information is given to prove that the triangles are congruent. If there is enough information, tell which congruence postulate you would use.
Step-by-step explanation:
Substitution time :D
c = 8
d = -5
All you have to do is replace the variables(letters) with the numbers!
3(8 + (-5))
Do parentheses first! And remember that adding a negative is the same as subtracting :)
3(3) = 9
We can use the formula for a parabola:

where

is the origin of the parabola and

is some constant scaling factor.
We are given that the center of the arch on the bridge is

. This is our origin. So our equation is:

Now we just need to find c. We can do this by plugging in one of the other points given:


So our final equation for the arch of the bridge is:
Answer: 400
25 x 800 = 20,000 x 8% = 1,600 / 4 = 400