Search found 8 matches
what is the value of x?
If y = -z, where z is a prime number, what is the value of x?
1.) |x+2| + 2 = y
2.) y > -8
- by alexandrabiorka
Thu Aug 14, 2014 8:38 am- Forum: Data Sufficiency
- Topic: what is the value of x?
- Replies: 2
- Views: 1325
- by alexandrabiorka
Sun Aug 03, 2014 5:00 am- Forum: Data Sufficiency
- Topic: tangent circles
- Replies: 3
- Views: 1435
tangent circles
Two Tangent circles A and B have radii r1 and r2, respectively. What is the distance between their centers?
1. R1 = 3 in
2. R2 = 5 in
Why wouldn't the answer choice be C here? Thanks!
- by alexandrabiorka
Sat Aug 02, 2014 11:29 pm- Forum: Data Sufficiency
- Topic: tangent circles
- Replies: 3
- Views: 1435
Circle and point of tangency problem
Circle ABCD is defined by the equation x^2 + y^2 = 25 on a coordinate plane. Line segment EF is defined by the equation 3y = 4x + 25 and is tangent to circle ABCD at exactly one point. What is the point of tangency?
(A) (-4,3)
(B) (–3, 4)
(C) (–4, 7/2)
(D) (–7/2, 3)
(E) (–4, 4)
- by alexandrabiorka
Fri Aug 01, 2014 8:03 am- Forum: Problem Solving
- Topic: Circle and point of tangency problem
- Replies: 4
- Views: 1544
Function data sufficiency
Here is a data suffic problem I have been stumbling on.
Is f(x) < 0?
(1) f(x) = (x^3)^3(x^5)
(2) x=-2
- by alexandrabiorka
Mon Jul 28, 2014 1:25 am- Forum: Data Sufficiency
- Topic: Function data sufficiency
- Replies: 7
- Views: 4321
average with exponents
What is the average of 101^2 and 99^2?
a) square root of 101 + square root of 99
b) 100
c) 100^2 - 1
d) 100^2
e) 100^2 + 1
- by alexandrabiorka
Sun Jul 27, 2014 3:43 am- Forum: Problem Solving
- Topic: average with exponents
- Replies: 5
- Views: 4030
This question was asked in a number properties packet from my GMAT Prep course. Thanks for all of your help!!
- by alexandrabiorka
Sun Jul 27, 2014 3:00 am- Forum: Problem Solving
- Topic: Prime Numbers
- Replies: 7
- Views: 2537
Prime Numbers
What is a quick efficient way to solve this?
How many prime numbers are there between 1 and 10,000?
A) 1229
B) 3341
C) 3441
D) 3541
E) 4999
Thanks!
- by alexandrabiorka
Sun Jul 27, 2014 1:26 am- Forum: Problem Solving
- Topic: Prime Numbers
- Replies: 7
- Views: 2537