Test 1 Section 3 Number 20
Test 1 Sec 3 14 please
If h=a^-3 and am=1 what does h^3 equal in terms of m?
After the first term, each term in a sequence is k times the preceeding term and p is the first term of the sequence. If the ratio of the seventh term to the third term is 16, what is a possible value of k?
If x and y are positive and sqrtx = y, which of the following must be equal 0?
A) x-y
B) x- sqrty
C) y-2x
D) y- x^2
E) y^2 -x
If x^2/3=y, what does x^4 equal in terms of y?
(A)y^2
(B)y^8/3
(C)y^3
(D)y^5
(E) y^6
(p^b)^a=(p^2c)^b
In the equation above, a,b,c and p are integers greater than 1. If c=4, what is the value of a?
If x and y are integers such that x^2=64 and y^3=64 which of the following could be true?
I. x=8
II. y= -4
III. x +y= -4
A) I only
B) II only
C) I and III only
D) II and III only
E) I, II and III
Hi Mike, sorry for asking questions so frequently. I’m on my 16th practice test now and I am amazed to find something new everytime. Anyway…
If x and y are numbers such that (x+9)(y-9)=0 what is the smallest possible value of X^2 + y^2
A 0
B 9
C 18
D 81
E 162
I got E when I did this but the answer is 81.Why?
On page 110 in your Math Guide, why did you decide to use values for a that are greater than 1, between 0 and 1, between -1 and 0, and less than -1? It’s so hard for me to see/come up with that kind of reasoning! I would have just chosen a random value. How do you come up with that logic?
Hi,
Question from SAT Subject Test Math 2. Hope you can answer it.
If f(x)=sqrt (x^2), then f(x) can also be expressed as:
A. x
B. -x
C. +/- x
D. modulus x
E. f(x) cannot be determined because x is unknown.
My answer was A, but the given answer is C. Could you please explain?
The five questions in this short quiz would all, I’m fairly sure, fit into the “Heart of Algebra” category that will be so heavily emphasized on the new SAT. Obviously, without even a full practice test released yet, it’s tough to know for sure if I’ve got the style right, but based on what I’ve (more…)
College Board released a bunch of sample questions this week for the new PSAT and SAT, which will make their debuts in October 2015 and March 2016, respectively. Over the next few days, I’ll be making posts working through each question, a few at a time, and commenting on them when I feel like I have (more…)
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