Questions Answered

korosh23:
Group Title
Indicate which is the higher energy orbital?
 updated 22 days ago
 3 replies
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BelleFlower:
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A plastic conical ornament has a right cylinder encased in it, starting from the base, such that the top edge of the cylinder is always touc…
 updated 11 months ago
 7 replies
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BelleFlower:
Group Title
A spherical balloon is expanding at a constant rate of 32(pi) cm^3/s. The balloon is intially fully deflated. After 9 seconds, the volume of…
 updated 11 months ago
 4 replies
 1 Medal

BelleFlower:
Group Title
Find the coordinates of the point on y=2x^2 + 5 where the gradient is 4. Obtain the equation of the tangent to the curve at this point.
An…
 updated 11 months ago
 3 replies
 1 Medal

BelleFlower:
Group Title
Find the value of a, of b and of c in the identity \[x^{3}+3x ^{2}2x+16c(x+2) = ax ^{2}(x1)+b(x2)^{2}(x1)\]
 updated one year ago
 7 replies
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apostle13:
Group Title
log 1/9 base 81
 updated one year ago
 8 replies
 2 Medals

BelleFlower:
Group Title
Given that the curve y=ax^2 + 3ax + a + b, where a≠0, intersects the xaxis at exactly one point, find b in terms of a.
 updated one year ago
 14 replies
 1 Medal

BelleFlower:
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dh
 updated one year ago
 4 replies
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BelleFlower:
Group Title
Show that the equation kx ^{2}4x+k=2kx3x ^{2}1 has real and distinct roots for all real values of k.
 updated one year ago
 7 replies
 2 Medals

BelleFlower:
Group Title
Solve the equation \[\log_{x} 5 + 3\log_{5} x +4 =0\]
 updated one year ago
 7 replies
 4 Medals

BelleFlower:
Group Title
Simplify the following expression (4(2^(n+1))2^(n+2))/(2^(n+1)2^n) Ans given: 4
 updated one year ago
 16 replies
 2 Medals

BelleFlower:
Group Title
x^2  2k(x+1) +k^2 = 6 has real roots. Find the roots in terms of k. Ans given: sqrt(2k+6) and  sqrt(2k+6)
 updated one year ago
 5 replies
 1 Medal

BelleFlower:
Group Title
Find the range of values for x for which the equation x^2  2k(x+1) +k^2 = 6 has real roots. Find the roots in terms of k.
 updated one year ago
 23 replies
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Jewels89:
Group Title
Factor Completely. If the equation is prime, state this.
10r^229r+10
 updated one year ago
 6 replies
 1 Medal

PatrickJordon:
Group Title
Find the product:
(x+y)(x^2+3xy+y^2)
 updated one year ago
 6 replies
 2 Medals

BelleFlower:
Group Title
Find the range of values for p for whih the roots of the roots of the equation x^2 + (2p +1)x = 3  p^2 are not real. State the range of val…
 updated one year ago
 5 replies
 2 Medals

BelleFlower:
Group Title
Indices question pls wait for picture
 updated one year ago
 2 replies
 1 Medal

BelleFlower:
Group Title
indices question please refer to image
 updated one year ago
 4 replies
 1 Medal

BelleFlower:
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Please refer to image!
 updated 2 years ago
 5 replies
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BelleFlower:
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Logarithms question! Help needed with part (iii). Please refer to attached image.
 updated 2 years ago
 7 replies
 2 Medals

BelleFlower:
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Logarithms question, please refer to image. Desperately need help!
 updated 2 years ago
 38 replies
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BelleFlower:
Group Title
Wait for img! Logarithms
 updated 2 years ago
 3 replies
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BelleFlower:
Group Title
Logarithms! Wait for image :)
 updated 2 years ago
 27 replies
 2 Medals

BelleFlower:
Group Title
Logarithms! Wait for image please!
 updated 2 years ago
 12 replies
 1 Medal

BelleFlower:
Group Title
Please wait for image. Logarithms
 updated 2 years ago
 35 replies
 1 Medal

BelleFlower:
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Please wait for image! Logarithms question
 updated 2 years ago
 14 replies
 1 Medal

tc1979:
Group Title
tell me if I am right
0.551 x 197.2/100 = 1.08
 updated 2 years ago
 4 replies
 1 Medal

BelleFlower:
Group Title
Please wait for image! Logarithms question.
 updated 2 years ago
 24 replies
 4 Medals

BelleFlower:
Group Title
Please wait for image. Help with Q9. Answer is given as 9/2 lg x + lg 27/2. Please show steps!
 updated 2 years ago
 30 replies
 4 Medals

BelleFlower:
Group Title
Please help! Solve these simultaneous equations y = (2/3)x + 38/3 and y = (1/5)x + 7/5
 updated 2 years ago
 7 replies
 1 Medal
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