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286

please help me

$\Delta ABC$ is inscribed in a circle such that $864 \angle A = \angle B = \angle C$. If $B$ and $C$ are adjacent vertices of a regular $n$-gon inscribed in the circle, find $n$.

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Guest Feb 1, 2021

297

Help

The equation 24x2+25x−47ax−2=−8x−3−53ax−2 is true for all values of x≠2a, where a is a constant.
What is the value of a?

Guest Feb 1, 2021

381

Please help meeeee! cant solve this.

Let a, b, c, and d be positive integers. We know that a+b = kc, b+c = kd, c+d =ka, d+a = kb. Find the maximum of a/b + b/c + c/d + d/a.

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sticks Feb 1, 2021

326

floor function

Compute $\lfloor \sqrt{1} \rfloor + \lfloor \sqrt{2} \rfloor + \lfloor \sqrt{3} \rfloor + \dots + \lfloor \sqrt{100} \rfloor$.

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Guest Feb 1, 2021

580

+70

ok last one lol

An FM radio station broadcasts at 77 megahertz (MHz). What is the energy of each photon in Joule? Use h = 6.6 × 10^-34 J·s for the Planck constant.

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Skatergoat Feb 1, 2021

Jan 31, 2021

461

+70

how?

At rest, hydrogen has a spectral line at 126 nm. If this line is observed at 141 nm for the star Sirius, how fast is Sirius moving in km/s?

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Skatergoat Jan 31, 2021

338

help geometry

Let ABC be a triangle such that AB = 6, AC = 8 and BC = 10. Let M be the midpoint of BC. Draw Square AMDE as above, and let MD intersect AC at F.
Find the area of quadrilateral AFDE.

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Guest Jan 31, 2021

614

+70

?bruh?

Dietary guidelines suggest an intake of about 1903 food calories per day for an adult human. There are about 4184 joule in one food calorie. How many watts powers an adult human throughout the day?

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Skatergoat Jan 31, 2021

302

quadrilateral ABCD

In quadrilateral $ABCD$ inscribed in a circle, \[\overline{AB}=6, \overline{BC}=3, \overline{AD}=9, \angle B=120^\circ.\] If $\overline{CD}>3,$ what is the area of quadrilateral $ABCD?$

Guest Jan 31, 2021

337

analytic geometry

triangle ABC is a right triangle. Sides AB and BC form the fight angle. The equation of the line is representing side AB is 4x+8y=16. If C is located at point (1,-3) What is the equation of the line representing side BC?

Guest Jan 31, 2021

551

+126

Analytical geometry

A =(10,-10) and O=(0,0) Determine the sum of all x and y coordinates of all points Q on the line y =x +6 such that angle OQA =90

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geoNewbie21 Jan 31, 2021

326

help asap (algebra)

Find a polynomial f(x) of degree 5 such that both of these properties hold:
f(x) is divisible by x^3.

f(x)+2 is divisible by (x+1)^3.

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Guest Jan 31, 2021

450

+328

Rita's coins

Rita has two pennies, two nickels, two dimes, and two quarters. How many different amounts that is worth at least one penny can she pay exactly using only her coins?

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Potatobird Jan 31, 2021

469

+70

halp

An FM radio station broadcasts at 98 megahertz (MHz). What is the wavelength of each photon (in meters)?

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Skatergoat Jan 31, 2021

318

help with algebra

A rock is thrown upward from the height of 5 ft with an initial velocity of 50 ft per second. The height h(in feet) of the rock at time t seconds is h(t)=-16t^2+50t+5. When will the ball reach a height of 8 ft?

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Guest Jan 31, 2021

287

system

\[ \begin{eqnarray}
m\times a\times t & =& \frac {1}{8} \\
m\times a\times h & =& 32 \\
m\times t\times h & =& \frac{1}{3} \\
a\times t\times h & =& 162 \\ <#> \end{eqnarray} \]
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Guest Jan 31, 2021

466

+30

HELP ME asap!

1) How many positive whole numbers less than or equal to 2020 have a sum ofdigits equal to 1 or 2?

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QueenOfAllTrades Jan 31, 2021

316

Wat is dis

et $f(x) = 12x+7$ and $g(x) = 5x+2$ whenever $x$ is a positive integer. Define $h(x)$ to be the greatest common divisor of $f(x)$ and $g(x)$. What is the sum of all possible values of $h(x)$?

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Guest Jan 31, 2021

316

regular pentagon

The diagonals of a regular pentagon can be used to form a smaller regular pentagon.
The ratio of the areas of the large pentagon to the small pentagon is $\phi^n$, where $\phi$ is the golden ratio $\frac{1 + \sqrt{5}}{2}$, and $n$ is an integer. read more ..

Guest Jan 31, 2021

348

Pls Help @CPhill!

Let ABCDEF be a convex hexagon. Let A', B', C', D', E', F' be the centroids of triangles FAB, ABC, BCD, CDE, DEF, EFA, respectively.
(a) Show that every pair of opposite sides in hexagon A', B', C', D', E', F' are parallel and read more ..

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Guest Jan 31, 2021

305

pls help!

ABCD is a parallelogram.
BC=CF
∠ACD=42 °
∠EBC=114 ° read more ..

Guest Jan 31, 2021

375

+328

Peter's Stamps

Peter has two 49-cent stamps, one 5-cent stamp, and twenty 1-cent stamps. How many different postage amounts (that is worth at least one cent) can Peter make exactly?

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Potatobird Jan 31, 2021

385

algebra

The polynomial ax^2+bx+c is divisible by x-1 and has a remainder of 2 when divided by x+1 and has a remainder of 8 when divided by x-2. Find the value of a, b and c

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Guest Jan 31, 2021

498

digits

The sum of the digits of a two digit positive integer is 15 , when the digits are reversed the number is 27 more than the original number . what was the original number?

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Guest Jan 31, 2021

371

speed question

A train covers a certain distance at a uniform speed. If the train had been 6 km/hr faster, it would have taken four hours less than the scheduled time. And if the train were slower by 6 km/hr, the train would have taken six hours more than the scheduled read more ..

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Guest Jan 31, 2021

All Questions ⁺⁰234927 Questions

please help me

Help

Please help meeeee! cant solve this.

floor function

ok last one lol

how?

help geometry

?bruh?

quadrilateral ABCD

analytic geometry

Analytical geometry

help asap (algebra)

Rita's coins

halp

help with algebra

system

HELP ME asap!

Wat is dis

regular pentagon

Pls Help @CPhill!

pls help!

Peter's Stamps

algebra

digits

speed question

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