All Questions ⁺⁰230647 Questions

0

902

4

+2862

Analog Clock Problem (Explanation Needed!)

A digital, 12-hour clock shows hours and minutes. During what fraction of the day will the clock show the digit 1 in its display? Express your answer as a common fraction.

The correct answer is 1/2. But why?

CalculatorUser Oct 14, 2018

0

509

1

Help

Several figures can be made by attaching two equilateral triangles to the regular pentagon in two of the five positions shown. How many non-congruent figures can be constructed in this way?
read more ..

Guest Oct 14, 2018

0

542

1

Help

Several figures can be made by attaching two equilateral triangles to the regular pentagon in two of the five positions shown. How many non-congruent figures can be constructed in this way?
read more ..

Guest Oct 14, 2018

+1

1224

1

Help plz

What is the smallest positive integer $k$ such that, for every positive integer $n$, $6n+k$ is relatively prime to each of $6n+3$, $6n+2$, and $6n+1$.

Guest Oct 14, 2018

0

940

3

Proportion

Hey, can anyone help solve this proportion? , thanks!

NerdyKid ●●●

Guest Oct 14, 2018

0

865

1

+8

need help

the shell station has 21 gallons of gas for $70 or holiday has 15 gallons for $50.00

HermanMR Oct 14, 2018

0

989

1

+8

rates and ratios

1.5 pounds of fiji apples for $29.85 or 1.2 pounds for granny smith apples for $20.28

HermanMR Oct 14, 2018

+1

876

4

+1438

i'm not smart i need help, i'm worthless... plz help

which expression is not equivilent to 8+(n-4)?

(8+n)-4 read more ..

SmartMathMan Oct 14, 2018

Oct 13, 2018

+1

1095

8

+1438

help smart kid plz

2/3a - 1/6 = 1/3 what is the solution to the equation?

a= 1/6 read more ..

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SmartMathMan Oct 13, 2018

0

1187

1

+166

Math

Complex number z lies on the circle centered at 0 with radius 5. What is |z^3|?

grif389 Oct 13, 2018

0

2165

1

+166

Math

Suppose z is a complex number such that z^3=100+75i. Find |z|.

grif389 Oct 13, 2018

+1

1001

2

+72

Tips

I am a 6th grade currently taking Algebra 2 or Math 3 and AP Physics 1. High schoolers say I will be stressed in high school, so I shouldn't take high level courses. I made it to the state for mathcounts and science olympiad. I made national for science read more ..

NerdyKid Oct 13, 2018

+1

5659

3

+1438

Help!

of the 800 participants in a marathon, 120 are running to raise money for a cause. How many participants out of 100 are running for a cause?

SmartMathMan Oct 13, 2018

0

827

9

Trying to settle a mental conflict

So, I'm trying to solve this:
Do I multiply both sides by the recriprical of 4/3 or do I distribute first?

Thanks! read more ..

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Guest Oct 13, 2018

0

2029

8

+116

Please help asap!

Cant figure this one out:
Suppose is a complex number such that . Find .

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somebody Oct 13, 2018

0

860

4

+116

Help!

Find all complex numbers such that . Please help solve asap! Its ok if u dont have an explanation.

somebody Oct 13, 2018

0

900

2

+116

Please help!

What is the area of the region of the complex plane defined by ?

somebody Oct 13, 2018

0

954

3

Geometry help!

1) In triangle ABC, AB=AC and D is a point on line AC so that line BD bisects angle ABC. If BD=BC, what is the measure, in degrees, of angle A?

2) In a certain iscoceles right triangle, the altitude to the hypotenuse has length 4sqrt2. read more ..

Guest Oct 13, 2018

0

578

1

Help! I'm confused on what to do here...

Consider the following 2 linear equations:
Solve for the point of intersection using substitiution; thats where I'm confused.

How exactly do I solve for the point? Do I just do it like a equation with variables read more ..

Guest Oct 13, 2018

0

978

3

+78

NEED HELP ASAP

One ordered pair (a,b) satisfies the two equations and a^5b^5=7776. What is the value of a in this ordered pair?
Sorry, one is in LaTex. NEED HELP PLEASE

Web2.0CalcUser123 Oct 13, 2018

+1

615

1

What does this equal

What does x equal in...

Guest Oct 13, 2018

+1

1181

1

+72

please help me with geometry problem

For a triangle XYZ, we use [XYZ] to denote its area.
Let ABCD be a square with side length 1. Points E and F lie on line BC and line CD, respectively, in such a way that angle EAF=45 degrees If [CEF]=1/9, what is the read more ..

NerdyKid Oct 13, 2018

0

683

3

+845

Ellipse question

so on this question i have tried completing the square to find the translation but it doesnt seem to work, please tell me if my method is correct or not and how to do it the right way. read more ..

YEEEEEET Oct 13, 2018

0

773

5

+845

an ellipse has the equation

an ellipse has the equation
Given that the line
intersects the ellipse at 2 distinct points, show that
-13 k 13 read more ..

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YEEEEEET Oct 13, 2018

0

1049

11

+343

Matrix problem

If A its nxn Matrix and A^4 - A^3 + A^2 - A + Ιnxn = 0nxn, prove Α^-1 = -Α^4
Thanks!

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Dimitristhym Oct 13, 2018

3 Online Users