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How do you test the alternating series #Sigma ((1)^(n+1)2^n)/(n!)# from n is #[0,oo)# for convergence?

Which tells us more about an element's properties, its row or its column? Why is this?

Variable acceleration?

The measures of the angles of PQR are in the ratio 2:5:5. What are the measures
of the angles?

A group of 48 people visits a museum. There were twice as many children as adults in the group. How do you write a system of equations you could solve to find the number of adults (a) and the number of children (c) in the group?

Aqueous solution of barium sulphide reacts with aluminum chloride. Write name of products ?

The distance between two successive crests of
a certain transverse wave is 1.15 m. 20 crests
pass a given point along the direction of travel
every 16.2 s.
What is the wave speed?
Answer in units of m/s.

Prove that if 1<a<2 , that 2<a+1/a<3?
please , i really need your help!!!

How much will he have to deposit as principal to have enough money in 1 year to buy the bike?
Round your answer to the nearest cent.

If the frequency of a wave is kept constant and the amplitude increases will the wavelength increase or remain constant?

How do you simplify #1000^2/(252^2  248^2)# ?

What is limit of x as it approach zero?

How do you simplify #log_2 (7^2 * 4^7)#?

Question #561d4

If each orbital can only hold 2 electrons, what about the valence electrons? Shouldn't there be eight?

How do impurities lower the melting point of a pure substance?

What is the derivative of #f(t) = (e^t/t +e^t, e^ttcost ) #?

Question #518f7

In order to determine the slant height of several pyramids, Marjorie used the surface area formula, #S = 1/2 pt + b# for the slant height, #t#. What equation would be the correct transformation of the surface area formula for #t#?

The sound level at a point is increased by 30 decibels. By what factor is the amplitude increased ?

Question #1f484

How do you find the derivative of #y= ( 2x sin x ) ^ 3x cos x#?

Question #99abd

Question #e54b4

Question #ad152

What are the solutions to the equation sin^2x+cosx=1 on the interval 0 ≤ x < 2pi?

Question #3c6fa

It's not intuitive that the direction of angular velocity is perpendicular to the plane of rotation of the object? Can someone explain?

Question #10fa9

Question #5454a

How do you differentiate #y=ln(9x+4)^2#?

How do you differentiate #f(x)=(xsinx)/(x^2cosx)# using the quotient rule?

Question #e7dd8

Question #c7514

Referring to the pH chart, how many times more acidic is a solution of pH 1 than a solution of pH 2?

Question #8575f

In a 306090 triangle, what is the length of the hypotenuse when the shorter leg is 7 in.?

What is the formula equation for methane (#CH_4#) is ignited with oxygen, resulting in carbon dioxide and water?

Question #56cff

Question #0a254

How do you order the following from least to greatest #sqrt49, sqrt7, 0, sqrt51, 6.8#?

Question #fea28

Question #a3e85

How do you translate into mathematical expressions and find the number given The product of three more than twice a number and two is fourteen?

#sqrt (t) = sqrt (t  12) + 2? #solve the radical equations, of possible.

How do you find the possible values for a if the points (5,8), (a,2) has a distance of #3sqrt5#?

Question #26795

How do you prove # {(sin(x + y)) / sin(x)cos(y)} = 1cot(x)tan(y)#?

Question #3cd1d

What is the algebraic property demonstrated by if #x=3# and #3=y#, then #x=y#?

How do you write a recursive rule and an explicit rule for the arithmetic sequence 19, 9, 1, 11,...?

What is the implied meaning of a word based on its context?

Two cars left the city for a suburb, 120 km away, at the same time. The speed of one of the cars was 20 km/hour greater than the speed of the other, and that is why it arrived at the suburb 1 hour before the other car. What is the speed of both cars.?

How do you verify sin2x * cotx = 1 ?

Question #37bc4

Fill in the blank. Let θ be an angle in standard position, with
(x, y) a point on the terminal side of θ and r = #sqrt(x^2 + y^2)≠ 0#?

To have 1st, 2nd, 3rd, etc. overtones in a closed or openair column, do you need to have a longer tube length (than the one that produced the fundamental)?

Why would we want to start viewing into a microscope under low power first, and then switch to high power?

How do you solve: #n + 2 = 14  n#?

Question #1864b

How can you determine wind direction by wetting your finger and holding it up in the air?

Question #a263e

Question #a6b93

What is the pOH if the pH is 11.25?

How do you find the slope that is perpendicular to the line #y=4x+2#?

An object with a mass of #10 kg# is lying still on a surface and is compressing a horizontal spring by #5/6 m#. If the spring's constant is #24 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?

How do you find the remaining trigonometric functions of #theta# given #costheta=24/25# and #theta# terminates in QIV?

If a #12 kg# object is constantly accelerated from #0m/s# to #40 m/s# over 8 s, how much power musy be applied at #t=1 #?

Question #84027

How do you find the amplitude, period and graph #y=3cos(1/2theta)#?

Question #c2c04

The sum of $8000 was deposited at 8 percent interest compounded annually. How much money was in the bank at the end of 2 years?

How do you write the answer in scientific notation given #(7.2times10^3)^3#?

In #triangle ABC#, #a=12, b=8, c=8#, how do you find the cosine of each of the angles?

Solve the equation #cos^2x+cos^2(3x)=1#?

Question #bca2e

How do you solve #7r \div 7= 21\div 7#?

An object with a mass of #110 g# is dropped into #750 mL# of water at #0^@C#. If the object cools by #70 ^@C# and the water warms by #3 ^@C#, what is the specific heat of the material that the object is made of?

What is the vertex form of the equation of the parabola with a focus at (0,15) and a directrix of #y=16 #?

Question #78dbb

How do you evaluate #\frac { 6+ i } { 2 3i } =#?

Question #2cd6b

Question #5231b

How would you complete and balance the acid base neutralizations reaction: #HNO_3 + Al(OH_3) >#?

How do you use #csctheta=5# to find #cottheta#?

How do you use a calculator to evaluate #tan4.5#?

Question #78f8a

Question #7392e

How do you find the degree of the polynomial #7x ^ { 5} y ^ { 3} z#?

The endpoints of the diameter of a circle are (7, 3) and (5, 1). What is the center of the circle?

Given point (6,10) how do you find the distance of the point from the origin, then find the measure of the angle in standard position whose terminal side contains the point?

If #sin(pi/5) = y#, what is #csc((4pi)/5)#?

How do you prove #(4sinthetacostheta)(12sin^2 theta) = sin(4theta)#?

How do you simplify #\frac { 1} { \sin x + 1} + \frac { 1} { \sin x  1}#?

How do you factor #6x ^ { 3}  24x ^ { 2} + 18x#?

Question #1d40d

Can you prove #1 \cos ^ { 2} x = \sin x \cos x \tan x#?

The dimensions for a rectangular prism are #x+2# for the length, #x +3# for the width, and #x# for the height. What the volume of the prism expressed as a polynomial in standard form?

Question #27266

A triangle has two corners with angles of # pi / 4 # and # pi / 4 #. If one side of the triangle has a length of #16 #, what is the largest possible area of the triangle?

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