Answers created by Hriman
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Element X has a half life of 32 mins, 16 g of element X is decayed in 10 half lives, how much sample was initially available?
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A scientist says light is matter because it made of particles called photons that contain energy, which is the equivalent of mass, using #E=mc^2#, state the extent to which his belief is justified?
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5^x=3^(x+2) Solve for x?
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One.liter of an unknown gas weigh 24.3 grams at.standard pressure and -273 degree centigrade one possible formula of gas is 1 CO2 , 2 H2 3, O2 4, SO2?
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Weight of an object on the moon is 100N its weight on the earth will be, 1, 100N 2, 1200N 3, 50N 4, none?
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A geometric sequence is defined recursively by #a_n= 4a_(n-1)#, and the first term of the sequence is 0.5, how do you find the explicit formula?
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After the storm, we cleared the road of trees that____ a.) have fell b.) fall c.) had fallen d.) had fell?
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How do you determine circle, parabola, ellipse, or hyperbola from equation #4x^2 + 9y^2 - 16x +18y -11 = 0#?
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Our dog____ in front of the fireplace all morning. A.) had lain b.) has laid c.) laid d.)lays?
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How do you write the noble-gas electron configuration for nickel?
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How do you convert #(-4, 3pi)# from polar to cartesian coordinates?
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Who's interested in a new Socratic on a different website?
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How do you divide #( -3i+2) / (-i -1 )# in trigonometric form?
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What can we get from the electrolysis of NaCl in molten state?
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Which statement best represents the relationship between Angles s and t?
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In the figure below, find #bar(AE)# if #bar(AC)# is a perpendicular bisector of #bar(DE)#?
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What is the solution of x?
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Triangle ABC below is an equilateral triangle with three altitudes drawn?
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What is the measure of angle X for the following triangle?
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What is the solution of x?
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If the two segments in the figure below are perpendicular, what is the measure of angle ABD?
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What volume of hydrogen gas (measured at STP) would result from reacting 75.0g of sodium hydroxide with 50.0g of aluminum?
6NaOH + 2Al --> 2Na3AlO3 + 3H2
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Find the sum of arithmetic sequence Sum of even integers from 10 to 90
??
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Solve #2csc^2x = 2sec^2x#?
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What are the four essential elements for life?
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How many nucleons in carbon 14 have?
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How do you solve #2e^x-1=0#?
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(cos x-5)(cos x+1) = 0
what values in the interval (0, 2 pi) make this true?
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How do you solve this equation: cos(4x- Pi/4)= √2/2 ?
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How do you write the following complex number in rectangular form?
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How do you write the following complex number in rectangular form?
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Which of these is the quadratic parent function?
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What is #(costheta)/4# in terms of #csctheta#?
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If the specific heat of water is about 4 and the specific heat of air is about 1, which of the two substances will cool down the slowest?
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HELP, please ?
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Determine the center and radius of the following circle equation:
x
2
+
y
2
−
1
8
x
−
6
y
+
9
=
0
x
2
+y
2
−18x−6y+9=0?
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How do you prove # sec^2x-tan^2x =cos^2x+sin^2x #?
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What is sinx equal to?
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SIMPLIFY: csc(x) sin(x) + sin(x) − csc(x) ?
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What is the trigonometric form of # (3+6i) #?
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Change r=6cos(theta)+7sin(theta) to rectangular form ?
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How do I solve #6csc^2x=cotx+8# if #o<x<360#?
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How to solve #cos^2theta-costheta=0# if #0<x<360#?
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How to solve #cosxtanx+tanx=cosx+1# if #0<x<360#?
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1.sin780.cos390+sin(-390).cos(-300)=?
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How do you convert #r = 9 / (2 - cos(theta))# to rectangular form?
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Please help me find what the cos2 is equal to?
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Cos(x)=sin(x). Then the value of cos^4x + sin^4x=?
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How to convert #r=8+3costheta# to rectangular form?
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How to convert #r^2 = sintheta# from polar to rectangular form?
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Prove that (1+cosx)/sinx=sinx/(1-cosx)?
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How do you express the complex number in trigonometric form #3(cos 0° + i sin 0°)# in #a+bi# format?
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How do I prove this identity? 2-tanx/2cscx-secx=Sinx
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What does cot equal ? in terms of sin ,cos and tan
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Ocean waves are hitting a beach at a rate of 3.5hz. What is the speed of the waves if the distance between wave crests is 1.3 meters?
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Create Your Own "Dialogue" rhymes From Romeo And Juliet ? *AN EXAMPLE OF YOUR OWN RYHME*
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Mechanics, help?
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What are all the options for x in 2tanx=3sinx?
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A ball is dropped from a high rise platform at t=0 starting from rest.After 6s another ball is thrown downwards from the same platform with a speed 'v'.The 2 balls meet at t=18s.What is the value of
'v'?
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What is 0.7 as a fraction but it repeats?
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6 plus the quotient of 5 and h?
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An unknown solid monoprotic acid is titrated with 0.100 M NaOH. It takes 42.34 mL of the base to neutralize 0.525 g of the acid. What is the molar mass of the acid?
(Hint: the acid and base react in a 1:1 molar ratio; molar mass had units grams/mol.)
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Find the sum of the three smallest positive values of θ such that 4 cos^2(20-π)=3?
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Convert the polar equation to rectangular form?
#r=10 cos theta-6 sin theta#
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How do I solve #sqrt3 tan3theta + 1 = 0#?
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Verify the identity?
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A gas sample occupies 9.96 L at 3.0C. What is the pressure given that there are 1.26 mol of gas in the sample?
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Simplify, evaluate if possible using the unit circle:
#cos(pi/9)cos(pi/18)-sin(pi/9)sin(pi/18)#
?
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How do you solve?
(1+tanx)(5sinx-2) = 0 from -180<x<180
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What is the angle between #<1,5,7 ># and #< 4, 7, 3 >#?
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Is the function #f(x) = 13x^4 – 2x^3 + 7x# even, odd or neither?
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Help with signs, The sum of two numbers is 8, and their product is 9, 75, what are they?
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How do electromagnetic waves differ from mechanical waves?
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How do you convert #(−1, 5) # to polar form?
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Write the standard form of the equation of the circle with the given characteristics?
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If the index of refraction of a lens is 1.5, how fast does light travel in the lens?
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Eight more than the product of two and a number
x?
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Please help thank you??
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Help please????
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Please help ??
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How do you convert #9=(x-3)^2+(2y-9)^2# into polar form?
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If Sinθ = 1/3, what is CosθSin2θ?
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Find the sum of a geometric series if a1=8, and an=0.394 and r=9/11 (the fraction 9/11) ?
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1, 1, 2, 6, 24, 120, . . .
Is the sequence arithmetic, geometric, or neither?
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Show the identity cos(2a)=1-2sin^2a can be derived form a sum or difference identity and the pythagorean identity?
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Can you prove the following identity? cosx+tanx/sinx*cosx= cosx+sec^2xb-
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Find a polynomial f(x) of degree 3 with real coefficients and the following zeros?
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How do you write an explicit rule for the sequence 3,5,7,9,...?
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Locate the foci of the ellipse. Show your work.?
(x^2/36)+ (y^2/11) =1
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Find the indicated sum. Show your work. ? (refer to image)
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A sound wave with a high amplitude are ?
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Find the central angle in degrees of an arc of 2000 km on the surface of a planet if the radius of the planet is 2439 km?
The central angle is approximately ____ degrees
*Round to the nearest tenth as needed*
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How do I simplify the expression (tanˆ2Ø -1)cot Ø / sin Ø - cosØ to a sum of two trigonometric functions?
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How do you verify #(2cos^2x-1)^2/(cos^4x-sin^4x)#?
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Is cot^-1 x = tan ^-1 1/x ???
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How do you solve for x?
Sin x = Sin (2x - π) XE [0, 2π]
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Prove the following cosecA/cosecA-1+cosecA/cosecA+1=2+2tanAtanA?
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A standard deck of 52 cards consist of 13 hearts, 13 diamonds, 13 clubs, and 13 spades. if four cards are randomly selected without replacement, what is the probability that all four cards are hearts ?
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Write the first four terms of each geometric sequence a1=6 and r=1/2?
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How do I factor:
cotx^2+4cscx+5 ?
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