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Type: Posts; User: nicole

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1. Thread: Distance between two points SAT Subject test Math

by nicole
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2
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5,603

Thank you!!:)

Thank you!!:)
2. Thread: Distance between two points SAT Subject test Math

by nicole
Replies
2
Views
5,603

Distance between two points SAT Subject test Math

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 ...
3. Thread: x-intercepts SAT Subject test Math

by nicole
Replies
2
Views
5,626

Thanks miranda!:)

Thanks miranda!:)
4. Thread: x-intercepts SAT Subject test Math

by nicole
Replies
2
Views
5,626

x-intercepts SAT Subject test Math

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
5. Thread: Function SAT Subject test Math

by nicole
Replies
2
Views
3,003

Thank you!!:D

Thank you!!:D
6. Thread: Function SAT Subject test Math

by nicole
Replies
2
Views
3,003

Function SAT Subject test Math

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
7. Thread: inequality with absolute value

by nicole
Replies
2
Views
2,749

Thanks Brynlee!!

Thanks Brynlee!!
8. Thread: inequality with absolute value

by nicole
Replies
2
Views
2,749

inequality with absolute value

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

by nicole
Replies
2
Views
2,878

Thanks Brynlee!!

Thanks Brynlee!!

by nicole
Replies
2
Views
2,878

absolute value inequality

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
11. Thread: perpendicular lines SAT math

by nicole
Replies
2
Views
2,860

Thanks Brynlee!!

Thanks Brynlee!!
12. Thread: perpendicular lines SAT math

by nicole
Replies
2
Views
2,860

perpendicular lines SAT math

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}
...

by nicole
Replies
2
Views
2,827

Using properties of exponents and logarithms we...

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...

by nicole
Replies
2
Views
3,426

The general formula of a circle is ...

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...

by nicole
Replies
2
Views
5,927

The fastest and most reliable way to answer this...

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...

by nicole
Replies
2
Views
2,656

We know that sec(x)=\frac{1}{cos(x)}. So, ...

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...

by nicole
Replies
2
Views
2,672

In order to find the slope of a line we must...

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 ...

by nicole
Replies
2
Views
2,775

The composition of these three functions is given...

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!!:)

by nicole
Replies
2
Views
3,102

In order to find the x-intercepts of this...

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...

by nicole
Replies
2
Views
2,439

The vertex form of a parabola with 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!!:)
21. Thread: Newly defined symbol question

by nicole
Replies
2
Views
2,246

a@a@a= a@(a@a)= a@ ((a+a)^2-a) = a@ (4a^2-a)=...

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!!:)
22. Thread: Domain of a function

by nicole
Replies
2
Views
3,230

The base of a logarithm must be greater than zero...

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.

...
23. Thread: slope of a straight line

by nicole
Replies
2
Views
2,162

In order to find the slope of a line we must...

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 ...

by nicole
Replies
2
Views
2,172

If a

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!!;)

by nicole
Replies
2
Views
2,266

The function is undefined when the value of the...

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...
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