All Questions ⁺⁰237784 Questions

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531

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Trig i dont know

If cos(theta) = -2/sqrt5, and theta is in quadrant II, find the exact value of tan(theta+ pi/4)

Guest Nov 25, 2018

0

544

1

Is this correct?

So I saw this question, and was wondering whether there is a more mathematical way to solve it that doesn't rely on a random pattern?

Guest Nov 25, 2018

Nov 24, 2018

0

1253

1

+541

Algebra

k, b_2, b_3 and k, b_2, b_3 are both nonconstant geometric sequences with different common ratios. We have a_3-b_3=3(a_2-b_2). Find the sum of the common ratios of the two sequences.

xXxTenTacion Nov 24, 2018

0

863

5

algebra problem

Let $f(x)$ be the polynomial $f(x)=x^7-3x^3 2.$ If $g(x) = f(x 1)$, what is the sum of the coefficients of $g(x)$?

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Guest Nov 24, 2018

0

2085

1

right triangle trigonometry

$ABCDEFGH$ shown below is a cube. Find $\sin \angle HAC$. .

Guest Nov 24, 2018

0

865

1

Given the following function s(t)=3t^2-12t+15 for the displacement of an object

Given the following function s(t)=3t^2-12t+15 for the displacement of an object, where s(t) is in metres and t is time in seconds, determine the displacement of the object when it is stationary.

ElectricPavlov ●

Guest Nov 24, 2018

+1

2102

15

+158

Question about dots

In this square array of 16 dots, four dots are to be chosen at random. What is the probability that the four dots will be collinear? Express your answer as a common fraction.

(someone put in a picture of a 4 by 4 square of dots here) read more ..

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tanmai79 Nov 24, 2018

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616

1

What is the tangent point on g(x)=(36/x-1) has an instantaneous rate of change of -9?

What is the tangent point on g(x)=(36/x-1) has an instantaneous rate of change of -9?
That is 36 on the numerator and x-1 on the denomonator

Guest Nov 24, 2018

+2

692

1

+818

Geometry Problem

In a circle with center , is a diameter, is a chord, , and . Find the length of

Also, read more ..

mathtoo Nov 24, 2018

+2

3470

3

+818

Combinations

On the refrigerator, MATHEMATICS is spelled out with 11 magnets, one letter per magnet. Two vowels and four consonants fall off and are put away in a bag. If the T's, M's, and A's are indistinguishable, how many distinct possible collections of letters read more ..

mathtoo Nov 24, 2018

+1

729

3

+818

Distance!!!!!

The points (-3,2) and (-2,3) lie on a circle whose center is on the x-axis. What is the radius of the circle?

mathtoo Nov 24, 2018

+1

1023

1

+50

Week 7, Problem of The Week

A restaurant bill of is obtained by first adding tax to the cost of the food and then adding a tip to the result. What was the cost of the food in dollars?

hatchet288 Nov 24, 2018

0

651

2

What is the derivative of f(x)=cosx/sinx

What is the derivative of f(x)=cosx/sinx

Guest Nov 24, 2018

0

644

1

Find the magnitude of the resultant of two vectors

Find the magnitude of the resultant of two vectors u and v, given lul=2, lvl=7, and the angle between the vectors when they are arranged tail to tail is 40 degrees

Guest Nov 24, 2018

0

830

2

I'm not smart enough to make this equation.

Can someone make an equation of which the result is x divided by y, but the bigger x is, the smaller y is. So, if x is small, like 2, the result should be about x, but when x is big, like 2000, the result should be relatively small compared to x. read more ..

Guest Nov 24, 2018

0

1130

5

+158

Apperently...

Apparently the first ever question posted on this site was posted on January 25, 2012 by a guest. The immedieate next question was posted by admin (yes, that is an actual person on this site's name) on the next day. I might not have gone back far enough, read more ..

off-topic

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tanmai79 Nov 24, 2018

+1

907

3

What is the slope of the tangent line to g(x)=cos(x+pi) at x=pi

What is the slope of the tangent line to g(x)=cos(x+pi) at x=pi
I've never been shown a question with pi before so I'm super confused.

Guest Nov 24, 2018

0

698

1

What is the derivative of f(x)=3^(5x^2-4x).

What is the derivative of f(x)=3^(5x^2-4x). I'm shown that the answer is f'(x)=2ln3(5x-2)(3^(5x^2-4x)) but I'm not sure where the 2 in the front is coming from. Instead of 5x-2 shouldnt it also be 10x-4?

Guest Nov 24, 2018

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