Thank you!!:)
Type: Posts; User: nicole
Thank you!!:)
Distance between two points in 3-D space. SAT Subject test Math level 2
Which of the following is the distance between the points A(1,2,3) and B(-1,-4,0) ?
(A) 4
(B) 5
(C) 6
(D) 7 ...
Thanks miranda!:)
x-intercepts SAT Subject test Math level 2
How many x-intercepts has the graph of f(x)=3x^-x^3+6x^2+5x-2 ?
(A) 0
(B) 1
(C) 2
(D) 3
(E) 4
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Function SAT Subject test Math level 2
How many x-intercepts has the graph of f(x)=x^5-3x^3+x^2+9 ?
(A) 0
(B) 1
(C) 2
(D) 3
(E) 4
Thanks Brynlee!!
Which of the following is true given that |x+4|>5?
(A) x>1
(B) -9<x<1
(C) x<-9 \ or \ x>1
(D) x>1 \ or \ x<-9
Thanks Brynlee!!
Which of the following is true given that |x+4|<5?
(A) x<1
(B) -9<x<1
(C) x<-9 \ or \ x>1
(D) x<1 \ or \ x>-9
Thanks Brynlee!!
Which of the following is the equation of the line that is perpendicular to line 2x+3y=9 and passes through the point (1,2)?
(A) y=-\frac{2}{3}x+\frac{1}{2}
(B) y=-\frac{3}{2}x+\frac{1}{2}
...
Using properties of exponents and logarithms we have the following
4^a \cdot 4^b =7^{2c} \Rightarrow 4^{a+b}=7^{2c} \Rightarrow
log(4^{a+b})=log(7^{2c})\Rightarrow (a+b)log4=(2c)log7...
The general formula of a circle is
(x-x_{0})^2+(y-y_{0})^2=r^2, with center (x_{0},y_{0}) and radius r.
The given formula can be rewritten as
(x-1)^2=9-y^2 \Rightarrow (x-1)^2+y^2 =3^2...
The fastest and most reliable way to answer this question is by using GDC(Graphic Display Calculator).
All GDCs has a function that calculates the median of a number list.
For example, the...
We know that sec(x)=\frac{1}{cos(x)}.
So, sec(x)=\frac{1}{cos(x)}=\frac{5}{2} \Rightarrow cos(x)=\frac{2}{5}
From the following trigonometric identity
(sin(x))^2+(cos(x))^2=1
we can...
In order to find the slope of a line we must rewrite the equation to slope-intercept form i.e. y=ax+b where a is the slope.
So, the equation can be written as -5y=4-2x \Rightarrow ...
The composition of these three functions is given by
f(g(h(x)))= f(g(\sqrt{x}))= f((\sqrt{x})^2-2)= f(x-2)= x+2
Therefore the correct answer is (A).
Hope these help!!:)
In order to find the x-intercepts of this parabola we must set y=0 and then solve the quadratic equation using GDC.
For example, the commands for Casio FX-9860G II to solve a quadratic equation...
The vertex form of a parabola with equation y=ax^2+bx+c is given by y=a(x-v)^2+k where the vertex has coordinates (v,k).
Therefore the correct answer is (C).
Hope these help!!:)
a@a@a= a@(a@a)= a@ ((a+a)^2-a) = a@ (4a^2-a)= (a+4a^2-a)^2-a
= (4a^2)^2-a=16a^4-a
Therefore the correct answer is (D).
Hope these help!!:)
The base of a logarithm must be greater than zero and different than one.
x-2>0 \ and \ x-2\neq 1 \Rightarrow x>2 \ and \ x\neq 3
The argument of a logarithm must be greater than zero.
...
In order to find the slope of a line we must rewrite the equation to slope-intercept form i.e. y=ax+b where a is the slope.
So, the equation can be written as -5y=4-2x \Rightarrow ...
If a<0 and b\geq 0 then ab\leq 0.
So, the value of ab could be equal to zero when b= 0.
Therefore the correct answer is (A).
Hope these help!!;)
The function is undefined when the value of the denominator is equal to zero. The roots of the quadratic equation x^2-5x+6 =0 are x=2 \ or \ x=3.
Therefore the correct answer is (A).
Hope...