All Questions

4205

The terminal side of θ passes through the point (−3,7).

The terminal side of θ passes through the point (−3,7).
What is the exact value of sinθ in simplified form?
758√58
−758√58 read more ..

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Guest Jan 13, 2018

3782

Check if my answers are correct?

Hello everyone, I already have answers to the three questions I'm asking but I just want to make sure I am right, Thank you for checking my answers.

1. What is the exact value of the trigonometric expression?
tan(7π4) read more ..

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Guest Jan 13, 2018

1613

Help

What is the sum of all possible values of $k$ for which $x^2 + kx - 12x + 16$ is the square of a binomial?

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Guest Jan 13, 2018

810

Help please

Simplify and rationalize the denominator. The result can be expressed in the form read more ..

hectictar ●

Guest Jan 13, 2018

Jan 12, 2018

609

Prime or composite

Is this number Prime or Composite? And how do you determine it?
(((((2^3+3)^3+30)^3+6)^3+80)^3+12. Thanks for help.

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Guest Jan 12, 2018

1161

+86

Pre-Calc Question

4cos(x)-4sin^2(x) + 5=0
x = ?

hectictar ●

SurpriseMe Jan 12, 2018

2341

Let $a,b$ be real numbers, and let $x_1,x_2$ be the roots of the quadratic equation $x^2+ax+b=0$. Prove that if $x_1,x_2$ are real and nonze

Let $a,b$ be real numbers, and let $x_1,x_2$ be the roots of the quadratic equation $x^2+ax+b=0$. Prove that if $x_1,x_2$ are real and nonzero, $\frac 1{x_1}+\frac 1{x_2}<1$, and $b>0$, then $|a+2|>2$.

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Guest Jan 12, 2018

982

+109

Literally everything about trigonometry. This is urgent D8

We are currently learning about how to do trig with non-right triangles. The thing is, I barely understood the basics, so if anyone can explain an entire quarter of trigonometry, or knows a good website where I can learn it all, I would greatly appreciate read more ..

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ragg3dly Jan 12, 2018

1046

math

A cylinder has a height of 10 cm and a radius of 4 cm. A cone has a height of 5 cm and a radius of 4 cm. How does the volume of the cylinder compare to the volume of the cone?

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Guest Jan 12, 2018

1030

+577

Halp

Yes I have been "dead" for a while, I am back! I was learning about logarithms and on the test it threw this equation at me.
What on earth is LN? Or is it 1n? Why didn't my book tell me about this?

read more ..

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OfficialBubbleTanks Jan 12, 2018

926

+1378

The sum of the first n terms in the infinite geometric sequence {1, 1/3, 1/9, 1/27, ...} is 121/81. Find n.

The sum of the first n terms in the infinite geometric sequence {1, 1/3, 1/9, 1/27, ...} is 121/81. Find n.

Edit: got it, it's 5 :D

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AnonymousConfusedGuy Jan 12, 2018

+10

1982

+118727

Problems with LaTex

Latex has not displayed properly for a couple of weeks now.
Have other people had a problem or is it just my display?

For instance, this answer of Hectictar only displays as coding for me, it does not display as it should. read more ..

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Melody Jan 12, 2018

607

math question

1143+1945 = find the resul using this numbers 1 6 1 9 3 7 3 0 0 6 8
you can use + , - , x , and division. read more ..

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Guest Jan 12, 2018

2159

+595

What are the domain and range of the function?

What are the domain and range of the function?
f(x)= 1/3x7

read more ..

hectictar ●

jbouyer Jan 12, 2018

2534

+595

Which graph represents the function g(x) = 3/x+2 -4?

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jbouyer Jan 12, 2018

850

+595

Algebra

What are the equations of the asymptotes of the graph of f(x)= 3/x-2 +9

hectictar ●

jbouyer Jan 12, 2018

1758

+15

need more help

Adult and student tickets to the high school basketball game are sold each week. For every to adult tickets, seven student tickets are sold. How many total tickets were sold if 92 adult tickets were sold?

hectictar ●●

IvanYunga1 Jan 12, 2018

1193

+15

need help

The United States Air Forc has 19 women for every 81 men enlisted. If a squadron has 250 members, approximately how many are men

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IvanYunga1 Jan 12, 2018

1133

+490

Interesting Modulo Question

Suppose that x is an integer that satisfies the following congruences:
What is the remainder when x is divided by 105?

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RektTheNoob Jan 12, 2018

1679

Please help

If $A$, $B$ and $C$ are positive integers such that $\frac{A\sqrt{B}}{C} = \frac{8}{3\sqrt{2}}$, what is the value of $A+B+C$ given that $A$ and $C$ have no common prime factors, and $B$ has no perfect-square factors other than 1?

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Guest Jan 12, 2018

6291

What is the smallest distance between the origin and a point on the graph of $y=\dfrac{1}{\sqrt{2}}\left(x^2-3\right)$?

What is the smallest distance between the origin and a point on the graph of $y=\dfrac{1}{\sqrt{2}}\left(x^2-3\right)?$

Edit: read more ..

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Guest Jan 12, 2018

784

Simplify Radical Expressions

There is the square root of 40xy divided by the square root of 8 my friend said you have to find the square roots before dividing but the textbook we use showed the square root of 72 divided by the square root of 6 and it equaled the square root of 12 and read more ..

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Guest Jan 12, 2018

2550

Math help please

The ratio of students to teachers at a school is 19:1. how many students are there in each total number of people?

A. 100
B. 280 read more ..

ElectricPavlov ●●●

Guest Jan 12, 2018

950

physics

an adult cheetah can run at a top speed of approximately 31m/s. if its kinetic energy is 23610J, what is its mass?

TheXSquaredFactor ●

Guest Jan 12, 2018

985

Adding rational expressions

9x + 2/ 3x2 - 2x - 8 + 7/3x2 + x - 4

I tried to factor the denominator ending with -8 with (3x+2)(x-4) but it ends because 2 X -4 = -8 so I thought maybe that would work but it ends up being 3x^2 - read more ..

TheXSquaredFactor ●●●●●

Guest Jan 12, 2018

All Questions ⁺⁰237722 Questions

The terminal side of θ passes through the point (−3,7).

Check if my answers are correct?

Help

Help please

Prime or composite

Pre-Calc Question

Let $a,b$ be real numbers, and let $x_1,x_2$ be the roots of the quadratic equation $x^2+ax+b=0$. Prove that if $x_1,x_2$ are real and nonze

Literally everything about trigonometry. This is urgent D8

math

Halp

The sum of the first n terms in the infinite geometric sequence {1, 1/3, 1/9, 1/27, ...} is 121/81. Find n.

Problems with LaTex

math question

What are the domain and range of the function?

Which graph represents the function g(x) = 3/x+2 -4?

Algebra

need more help

need help

Interesting Modulo Question

Please help

What is the smallest distance between the origin and a point on the graph of $y=\dfrac{1}{\sqrt{2}}\left(x^2-3\right)$?

Simplify Radical Expressions

Math help please

physics

Adding rational expressions

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