How do you know the shaded circle are 3/4 of the entire circle on page 271 question 4
How does the arc length equal the radian measure of angle AOB ? (question 2 on page 271)
For question 5 on page 242(Angles, Triangle and Polygons), could you explain why the triangle was put into 60,30,90 right triangle and how you came up with b/2 *square root of 3 as the height?
Could you further explain your explanation of Practice Question #4 in PWN the SAT Math Guide “Polynomials” chapter (p. 148). In your long division confirmation of the answer (explanation p. 326), how do you know to divide by 9x + 1?
For #2 on the functions chapter, could you have just added 1 to each side to get f(x) by itself?
f(x-1)= x+1–>f(x)=x+2
I’m having trouble wrapping my head around your previous explanations and wanted to confirm that this method works.
Hi, I don’t get these types of problems & would really like an explanation for their solution. (x- 3)(x – d) = x^2 – 2dx + m. I don’t know how to find the value of dm because I can’t isolate d without getting a fraction. Please help );
Is it possible to solve question 3 of Solving systems of linear equations using the solving for expressions method? If so, how do you do it?
When talking about solution sets, do they consist of both the x and y coordinates or whatever satisfies the question? For example, in the problem x+1=√(x+3), would the solution set be {1} or {(1,2)}, or does it really not matter? Thank you.
the solid figure above is composed of four cubes, each of which has edges of length 1. what is the total surface area (including the bottom) of the solid figure?
Hi! May you please explain how to solve number 4 algebraically from the practice questions from the “working with advanced systems of equations” chapter? Thanks!
Hi! I was wondering what the best way to plug in would be for “example 1” in the “exponents and exponential functions” chapter?
Hi! May you please explain how to find the function for f(x) for number 5 from the practice questions in the “functions” chapter? I saw the solution, which said to find f(5+3), and then I got the correct answer, but I wanted to see if there is a function that could be found (as I tried to find it but I found it incorrectly and got an incorrect answer).
Can you please explain number 5 and 8 on the working with advanced system of equations.
Hi! May you please explain number 8 from the practice questions in the “lines” chapter? I understand that A is the correct answer after looking at the table values, but I don’t understand it from the equation itself. Thanks!
May you please explain number 10 on translating between words and math?