All Questions ⁺⁰237827 Questions

0

560

1

plz solve this

12 1\2+8 1\6+9 1\3=?
1) 20 2) 30
3) 40 4)50

Guest Aug 1, 2016

0

742

1

+9676

Partial Differentiation

MaxWong Aug 1, 2016

0

621

1

maths

m/x+q=N Find q m=9, x=2 N=1+4/5

Guest Aug 1, 2016

0

551

1

ughhhhh precalc

My homework is telling me that the square root of x^2+(x^2-10)^2 is equal to the square root of x^4-19x^2+100 .... I don't understand where the -19x^2 comes from

Guest Aug 1, 2016

0

579

1

Trigonometry

find X, given that tan(x) = 0.4557

Guest Aug 1, 2016

0

593

1

maths

what is the area of a square

Guest Aug 1, 2016

0

796

1

+244

Physics 102 question

A metal having a work function of 1.2 eV has light whose photon energy is 3.6 eV shining on it. What is maximum possible kinetic energy of the electrons that are ejected?
A.5.4 × 10-19 J
B.3.8 x 10-19 J
C.4.9 × 10-19 J read more ..

DamienDenninson Aug 1, 2016

0

731

1

+386

Log problems

HI!

I have a few problems to solve involving logs. Here's one:
read more ..

TonyDrummer2 Aug 1, 2016

0

1230

1

+244

hydrogen physics

A hydrogen atom has a single electron in its n = 2 excited state. It absorbs a photon with energy 8.9 eV, which frees the electron from the atom. What is the energy of the resulting free electron?
A.7.9 eV
B.5.5 eV
C.8.9 read more ..

DamienDenninson Aug 1, 2016

0

2316

2

+389

Suppose r and s are the values of c that satisfy the equation x^2-2mx+(m^2+2m+3)=0 for some real number m. Find the minimum real value of r^2+s^2.

Suppose r and s are the values of c that satisfy the equation x^2-2mx+(m^2+2m+3)=0 for some real number m. Find the minimum real value of r^2+s^2.

Dabae Aug 1, 2016

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2915

4

+389

Suppose the polynomial p(x)=x^3+ax^2+bc+c has the property that the mean of its zeroes, the product of its zeroes, and the sum of its coefficients are all

Suppose the polynomial p(x)=x^3+ax^2+bc+c has the property that the mean of its zeroes, the product of its zeroes, and the sum of its coefficients are all equal. If the y-intercept of the graph of y=p(x) is 2, what is b?

Melody ●●●●

Dabae Aug 1, 2016

0

712

2

+386

Find X

Hi!

I have log base x (16) = 4/3
read more ..

TonyDrummer2 Aug 1, 2016

0

643

1

Let x # y = x^2/y for all x and y such that y≠0. Find all values of a such that a # 3 = 9. List the values you find in increasing order,

Let x # y = x^2/y for all x and y such that y≠0. Find all values of a such that a # 3 = 9. List the values you find in increasing order, separated by commas.

Guest Aug 1, 2016

0

659

0

+244

Physics assist please

The gulf oil spill puts an oil film (refractive index = 1.45 ) with a thickness 280 nm on top of some salt water (index of refraction = 1.35). The sun (white light) shines on this from directly above and an observer in an aircraft sees a sheen. What is read more ..

DamienDenninson Aug 1, 2016

Jul 31, 2016

0

750

0

+244

General Physics 102

A double slit experiment has blue laser light with a wavelength of 400 nm incident upon two slits that are 59.3 μm apart. The viewing screen is 1.84 m from the slits. How far apart is the first dark fringe on one side of the central maximum to the third read more ..

DamienDenninson Jul 31, 2016

0

774

2

0.545+3[0.545] 1/2

0.545+3[0.545]1/2

Guest Jul 31, 2016

0

622

1

Help

how to make a negitive

Guest Jul 31, 2016

0

787

4

How do i find a formula for the inverse if this is one to one

How do i find a formula for the inverse if this is one to one
x-10/x+4

Guest Jul 31, 2016

0

659

1

fractions

how do you make a fraction on the calculator?

Guest Jul 31, 2016

0

596

0

linear cost function?

8000 to produce 180 parts, marginal cost of $25. Find the linear function

Guest Jul 31, 2016

0

680

1

9.47 times 5

Guest Jul 31, 2016

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