What is the best way to solve this problem within ~1 minute? (given SAT time limit)

# I had a question about Example 7 on Page 270 in the PWN Math Guide book fourth edition.

I had a question about Example 7 on Page 270 in the PWN Math Guide book fourth edition. I don’t understand how sin (15) is equal to cos (5pi/12). Could you explain this ?

# I had a question about example 1 on page 245 in the PWN Math Guide fourth edition book.

I had a question about example 1 on page 245 in the PWN Math Guide fourth edition book. I thought the side AM is equal to 3√3 because of the 30-60-90 rule but according to the answer, AM is 4. I understand how it is 4 but how is it not 3√3?

# Hi, I have a question for # 4 on pg. 78. Wouldn’t the answer to that question be -3?

Hi, I have a question for # 4 on pg. 78. Wouldn’t the answer to that question be -3?

# Could you please explain number 2 on page 28?

Could you please explain number 2 on page 28?

# Hi, I had some trouble with question #5 on p.242 of the PWN the SAT Math Guide book.

Hi, I had some trouble with question #5 on p.242 of the PWN the SAT Math Guide book.

I read the solution and just cannot figure out how to get the value of h, (b^3)/2.

Could you explain the steps on how to get the value of h? Do I have to use Pythagorean theorem or is it just solving for “h” in the triangle area formula?

# Hi! I was doing quadratic and exponential word problems on Khan Academy, and got this…

Hi! I was doing quadratic and exponential word problems on Khan Academy, and got this. Is it possible that this type of problem will be on the SAT, and if it is, please explain it.

Question(reworded): A guy travels up a river at v mph for 2 miles. He goes the same distance back, but 5 mph slower than he did on the way up. If he spent 3 hours traveling up and back, which could be used to determine his speed on the way up the river?

a) 2v^2-13v+17=0

b)3v^2-15v-4=0

c)3v^2-11v+10=0

d)3v^2-19v+10=0

# Hi can you help me with #7 on pg. 48?

Hi can you help me with #7 on pg. 48?

# Can you help me with the plugging in question 8 on pg. 29?

Can you help me with the plugging in question 8 on pg. 29?

# Can you help me on the backsolving question 7 on pg. 37?

Can you help me on the backsolving question 7 on pg. 37? Its got me stumped even with the backsolving.

# Hi! For page 120 question 8 in the pwn book, is there any other way to find the answer without using a Calculator?

Hi! For page 120 question 8 in the pwn book, is there any other way to find the answer without using a Calculator? I tried using a calculator but it took me a long time to find the answer. In addition, is there any other way to find that there is only one solution other than graphing or plugging the x values back into the equation?

# Hi! How do you do question 2 on page 100 from the functions section?

Hi! How do you do question 2 on page 100 from the functions section? I reviewed the solution in the back of the book but still don’t understand.

# Hi! On q8 page 149 (polynomials), what is happening in D? Why is it true?

Hi! On q8 page 149 (polynomials), what is happening in D? Why is it true?

# Hi Mike! In SAT official test 1, Q 29 (in the math calculator section), how do you solve this problem?

Hi Mike! In SAT official test 1, Q 29 (in the math calculator section), how do you solve this problem? I don’t quite understand the explanation/concepts mentioned in the book.

29)For a polynomial p(x), the value of p(3) is -2. Which of the following must be true about p(x)?

A) x-5 is a factor of p(x).

B) x-2 is a factor of p(x).

C) x+2 is a factor of p(x).

D) The remainder when p(x) is divided by x-3 is -2.

(Also what does PWN stand for?)

# Test 8 Section 4 #12

Test 8 Section 4 #12