Here are the answers to the Math B Regents June 2009.

### MC:

Number one was 100 degrees

THE graph was trignometric

It was SinA

Last one was 5

Radical equation was 4 , not 4 and -4

1/ ab to the 1 4th power

The 4 point equation

60, 300, 109.50 and 250.5

### Part 2:

Algebraic fraction 3/2

Log question was 3

Last one with area was 8200

Proof was AAS (paralel lines cut of congruent arcs, chords equal, vertical angles, 2 inscribed angles that intercept the same arc are equal)

Probabilty was 918/1024

Regression was 102 cases

The preimeter was 24+ 8 rad 3+ 8 rad 2

This is what I got, I didn’t write down all of the answers in my calc so this is all I have.

Multiple choice:

3 1 2 1 2 3 1 4 4 3 3 1 3 3 1 3 1 1 1 2

I think I got a couple wrong, but not many.

Short answer:

f(g(-2) = 5

sinB=0.42

log base 8: 3.6595 (I think the answer was actually 3 though)

—

103 cases

—

then the double angle cosine one was

60.0, 109.5, 250.5, 300.0

the proof was AAS, vertical angles are congruent, arcs of congruent angles are congruent, chords intersecting congruent arcs are congruent, and alternate interior angles.

I can’t remember the log question, but it might’ve been 5. Post the question just in case.

There’s more than one way of going around the proof. By showing that the angles of the upper triangle were congruent, and the triangle was thus isosceles, the corresponding sides would also be congruent.

Regression was 103, I think. You didn’t round right.

ON the graphing question, translation of r-x , r y=x

which operation did you do first?

i did reflection of x first then reflection y= x

Also on the last part 6 question using the proof

i didn’t prove the congruent triangles, i used

additive property and subsitive property

can you use additive property and subsitive property fro teh last question with out proving the two triangles congruent?

the question with the are of the triangle, i used 1/2 ab sinC n got 7 thousand something, did i do it the wrong way? D:

actually the area was 8200 i think

and the probability was much less than 912/1024

prove me wrong people! :/

on the mc the radical question was 4,-4….your so wrong its rediculous

all of these answers are completely wrong

all are wrong

8200 correct

it was 4 only not -4

The perimeter was 8200 the cases was 103. The last mc was 6. I have all the answers that are right. If anyone has any questions email me at sameul088@aol.com

lighto, you did ur reflection right.. it had to be in that order of y=x than the other one

I think the probability question was 1/10 not 9/10 because in the question it said John lies 3/4 of the time, they want to know the probability of when he will most likely tell the truth. If you used 3/4 in the equation u subtracted that answer from 1 to get teh value of when he will tell the truth.

um……ur wrong the probability the answer was 918/1024 but u can simplify that to 459/512

yeah the probability is 459/512 rounded

and the regression question was 13 rounded from 102.5

you do the reflection of y=x first

and it was only 4 not -4 also.

for the regression i def got 103 and i got only 4 also

i think one has the sin cosine one we have to check

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