SAT MATH
If p(a) is .4 and p(b) is .2 and the events of a and b are mutually exclusive, what is P(a and b)
0
If
f(x)=|x^2-50|
what is the value of f(-5)???
25
What is Square root of 5% of 5?
0.5
If xy=144, x+y=30, and x>y, what is the value of x-y?
18
If an object at five feet per second how many feet does it travel in an hour?
18000
What is When x=3 and y=5 how much does the value of 3x2-2y exceeded the value of 2x2-3y?
14
The factors of
x^2-8x-9
What are (x-1)(x-9)
find the mean, median, and mode of this data set
3, 9, 15, 18, 18, 21, 24, 30
median- 18
mean-17.25
mode 18
A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?
48
the length in inches, is 3 inches less that twice its width, in inches. which of the following gives the length, I inches, in terms of the width, W inches, of the box?
I=2w-3
if F(x)= x2-4x+5 and g(x)=2x+1, what is f(g(3))
26
What is the slope of any line parallel to the line 9x+4y=7?
-9/4
What is the simplest radical form of
root{}8
2root{}2
If the first term of an arithmetic sequences is 4 and the common differences is three, what is the 20th term?
61
a box has 5 red, 4 blue, and 3 green marbles. What is the probability of randomly selecting two blue marbles without replacement?
1/11
what is (5i+2)(6i+3)
-24+27i
if sin2x+cos2x=1, and sinx= 5/13, what is cosx?
12/13
The avg of 5 numbers is 12. If a 6th number is added and the new avg is 14, what is the 6th number?
24