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569

Evaluate the infinite geometric series

Evaluate the infinite geometric series: 2 + 1/8 + 1/128 + ...

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Guest Oct 26, 2020

572

Find the unique four-digit integer n with these properties:

Find the unique four-digit integer n with these properties:

The first two digits of n are equal
read more ..

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Guest Oct 26, 2020

664

Help would be nice : )

Let G be the center of equilateral triangle XYZ. A dilation centered at G with a scale factor -2/3 applied to triangle XYZ, to obtain triangle X'Y'Z'. Let A be the area of the region that is contained in both triangles XYZ and X'Y'Z'. Find A/[XYZ] read more ..

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Guest Oct 26, 2020

Oct 25, 2020

426

HELP ASAP PLS

Point X is on lineAC such that AX=4*CX=2. We know that angle ABC = Angle BXA = 90 degrees. what is line BX?

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Guest Oct 25, 2020

657

Find an ordered triple (x,y,z) of real numbers

Find an ordered triple (x,y,z) of real numbers satisfying x<= y<= z and the system of equations
sqrtx + sqrty +sqrtz = 10
x+y+z=42
(sqrtxyz) = 20

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Guest Oct 25, 2020

498

Larry has 4-cent stamps

Larry has 4-cent stamps and 19-cent stamps, which he can combine to produce various amounts of postage. For example, he can make 80 cents by using four 19-cent stamps and a 4-cent stamp. However, there are some amounts of postage he can't read more ..

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Guest Oct 25, 2020

562

HELP ASAP!!!!!

A quadratic of the form $-2x^2 + bx + c$ has roots of $x = 3 + \sqrt{5}$ and $x = 3 - \sqrt{5}.$ The graph of $y = -2x^2 + bx + c$ is a parabola. Find the vertex of this parabola.

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Guest Oct 25, 2020

553

What is Line BX

Point X is on lineAC such that AX=4*CX=2. We know that angle ABC = Angle BXA = 90 degrees. what is line BX?
Help pls i no idea how to do this .-.
[asy]
size(5cm);
pair A,B,C,X;
A = (0,0);
X = (12,0); <#> C = (16,0); <#> B read more ..

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Guest Oct 25, 2020

548

What is the probability that a randomly selected integer in the set { 1, 2, 3 ... 100 }

What is the probability that a randomly selected integer in the set { 1, 2, 3 ... 100 } is divisible by 2 and not divisible by 8? Express your answer as a common fraction.

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Guest Oct 25, 2020

760

There are five unmarked envelopes on a table

There are five unmarked envelopes on a table, each with a letter for a different person. If the mail is randomly distributed to these five people, with each person getting one letter, what is the probability that at least two people the correct piece of read more ..

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Guest Oct 25, 2020

457

Let x = 2012(a - b), y = 2012(b - c) and z = 2012(c - a)

Let x = 2012(a - b), y = 2012(b - c) and z = 2012(c - a) where a,b,c are real numbers, and assume xyz is nonzero. Compute (x^3 + y^3 + z^3)/(xyz).

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Guest Oct 25, 2020

503

I need help

Consider the function
where a is some number.
What is the largest value of a such that the graph of intersects every horizontal line at least once?

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imtryingmybest Oct 25, 2020

633

help due in 5 min

Find the -intercept of the line 3x-5y=7

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Guest Oct 25, 2020

764

Find all (real or nonreal) z satisfying (z - 3)^4 + (z - 5)^4 = -8

Find all (real or nonreal) z satisfying
(z - 3)^4 + (z - 5)^4 = -16

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Guest Oct 25, 2020

426

Number Theory

Starting at 1 and up, how far up the numberline do you have to go to find the 1000th number whose sum of its digits add up to 10? Any help would be appreciated. Thank you.

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Guest Oct 25, 2020

601

+92

Please help thanks

Determine the number of subsets of A = {1, 2, 3, 4, 5, 6, 7}.

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AaronWang2004 Oct 25, 2020

502

Find all real x that satisfy (2^x - 4)^2 + (4^x - 2)^2 = 196.

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Guest Oct 25, 2020

1175

+92

pls help thx

Suppose a, b, c, and d are real numbers which satisfy the system of equations
a + 2b + 3c + 4d = 10
4a + b + 2c + 3d = 4
3a + 4b + c + 2d = 10 read more ..

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AaronWang2004 Oct 25, 2020

698

If (a_1, a_2..... a_17) satisfy

If (a_1, a_2..... a_17) satisfy
1 + a_2 + a_3 = 1,
a_2 + a_3 + a_4 = 3,
a_3 + a_4 + a_5 = 5,
...
a_{15} + a_{16} + a_{17} = 29,
a_{16} + a_{17} + a_{1} = 31,
a_{17} + a_{1} + a_{2} = 33, <#> what read more ..

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Guest Oct 25, 2020

396

parabolas

The parabolas defined by the equations y = x^2 + 4x + 6 and y = 2x^2 + 7x - 4 intersect at points and (a,b) and (c,d), where c >= a. What is c-a?

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Guest Oct 25, 2020

394

Suppose the polynomial f(x) is of degree 3

Suppose the polynomial f(x) is of degree and satisfies f(3) = 2, f(4) = 4, f(5) = -2, and f(6) = 8. Determine the value of f(0).

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Guest Oct 25, 2020

557

+92

pls help thanks

What is the minimum value that can be achieved by the expression
$$x^2+y^2+z^2+2xy+2yz+2zx-3x-3y-3z-4$$
over all triples of real numbers
$x,y,z?$ read more ..

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AaronWang2004 Oct 25, 2020

714

• Soru : Standart atmosfer şartlarında deniz seviyesine göre 15.000 metre yükseklikteki

• Soru : Standart atmosfer şartlarında deniz seviyesine göre 15.000 metre yükseklikteki; a) Sıcaklık değeri kaçtır? (Sıcaklık ℃ cinsinden hesaplanacak.) b) Basınç değeri kaçtır? c) Yoğunluk değeri kaçtır?

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Guest Oct 25, 2020

521

Help?

ABCDEFGHIJ is a regular decagon. The rotation centered at G with an angle a takes D to J. Given that a is less than 180 degrees, find a.

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Guest Oct 25, 2020

594

+479

hard!

The quadratic can be expressed in the form . When the quadratic is expressed in the form , what is ?

I think its 3 but idk

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HelpBot Oct 25, 2020

All Questions ⁺⁰237665 Questions

Evaluate the infinite geometric series

Find the unique four-digit integer n with these properties:

Help would be nice : )

HELP ASAP PLS

Find an ordered triple (x,y,z) of real numbers

Larry has 4-cent stamps

HELP ASAP!!!!!

What is Line BX

What is the probability that a randomly selected integer in the set { 1, 2, 3 ... 100 }

There are five unmarked envelopes on a table

Let x = 2012(a - b), y = 2012(b - c) and z = 2012(c - a)

I need help

help due in 5 min

Find all (real or nonreal) z satisfying (z - 3)^4 + (z - 5)^4 = -8

Number Theory

Please help thanks

Find all real x that satisfy (2^x - 4)^2 + (4^x - 2)^2 = 196.

pls help thx

If (a_1, a_2..... a_17) satisfy

parabolas

Suppose the polynomial f(x) is of degree 3

pls help thanks

• Soru : Standart atmosfer şartlarında deniz seviyesine göre 15.000 metre yükseklikteki

Help?

hard!

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