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232819 Questions
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592
2
Stephan has been busy at work writing all the possible rearrangements
Stephan has been busy at work writing all the possible rearrangements of the letters in his name. He is one bored boy. If he can write 20 rearrangements of his name every minute, how many hours does it take to write all the possible rearrangements of his
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Imnotamaster
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Guest
Nov 15, 2020
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497
1
Can I get some help with these?
Hi... I've been strugling with these three problems for a few weeks:
(1) Degrees are not the only units we use to measure angles. We also use radians. Just as there are in a circle, there are radians
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Guest
Nov 15, 2020
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467
1
The two bases of a right conical frustum have radii 12 and 9
The two bases of a right conical frustum have radii 12 and 9. The two bases are 6 units apart. Let the volume of the frustum be V cubic units and the total surface area of the frustum be A square units. Find V + A.
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Guest
Nov 15, 2020
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364
1
How many sequences of 6 digits can we form
How many sequences of 6 digits x_1, x_2, x_3, x_4, x_5, x_6 can we form, given the condition that no two adjacent x_i are even? Leading zeroes are allowed.
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Guest
Nov 15, 2020
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356
1
In the diagram below, angle BAC=24
In the diagram below, angle BAC=24 degrees and AB = BC. If angle ABC=y degrees, what is the value of y?
<
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Guest
Nov 15, 2020
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346
1
In the figure below, ZAX is equilateral and has perimeter 30.
In the figure below, ZAX is equilateral and has perimeter 30. What is the perimeter of triangle LAZ?
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Guest
Nov 15, 2020
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400
1
Im confused with my math plz help me
what is the 8th term in the pattern 1 5 33 229 1601 I'm a 5th grader so plz make this a straight forward answer!! :3
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Guest
Nov 15, 2020
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240
0
dfnxkfniufxbdfxbvufybgub
dffdfsfsd w fsdfdfdfd
Guest
Nov 15, 2020
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624
4
A 288 degree circular sector
A 288 degree circular sector with radius 18 is rolled to form a cone. Find the height of the cone.
hectictar
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Guest
Nov 15, 2020
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471
2
Four positive integers p, q, r, s satisfy the following equations:
Four positive integers satisfy the following equations:
pq+2p+q = 348
qr+4q+3r = 208
rs+8r+6s = 722
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Guest
Nov 15, 2020
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498
1
Vieta's formula application
. One root is twice the other. Find the roots.
I got 3 and 6 from this since Vieta's formula says that the product of the roots must be 18 and 3*2 = 6. Did I do it correctly?
hectictar
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Guest
Nov 15, 2020
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238
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math
what are the differences between average and instantaneous rates of change? Define secant and tangent lines, and explain how they are involved
Guest
Nov 15, 2020
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334
0
Finding the equation for a polynomial when given 3 points
f is an odd 5th degree polynomial with rational coefficients such that , , and .
Give the rule for f.
So far, the only thing I know is that another root of x is based on conjugates and
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Guest
Nov 15, 2020
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450
3
A lucky integer is a positive integer which is divisible by the sum of its digits
A lucky integer is a positive integer which is divisible by the sum of its digits. How many numbers from 1 to 50 are lucky?
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Guest
Nov 15, 2020
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570
1
math
A rock is thrown from a roof and follows a parabolic through the air. The path of the rock is modeled by h(t)=-t^2 +9t+2, where h gives the height of the rock after t seconds since its release. when does the rock first reach a hight higher than 22 meters?
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Guest
Nov 15, 2020
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454
1
+38
math
(a)Determine the value "K" in the function f(x)=kx^2 (x-1)^3 (x+3) if its passes through the point(2,60)
(b) state the x-intercept(s) and y-intercept(s) of the function
(c) sketch a graph of the function,including x-intercept(s),y-intercepts,behavior
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Debnath
Nov 15, 2020
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613
2
Sarah's bowling score was 40 points more than Greg's, and the average of their two scores was 102. What was Sarah's score? (Recall that the
Sarah's bowling score was 40 points more than Greg's, and the average of their two scores was 102. What was Sarah's score? (Recall that the average of two numbers is their sum divided by 2.)
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Guest
Nov 15, 2020
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460
2
In the diagram, XY and XprimeYprime are diameters
In the diagram, XY and XprimeYprime are diameters of the two bases of the cylinder, and XY is parallel to XprimeYprime. We know [XYYprimeXprime] = 80. Find the lateral surface area of the cylinder.
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Guest
Nov 15, 2020
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405
1
For how many three-digit positive integers
For how many three-digit positive integers is the sum of the digits equal to 15
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Guest
Nov 15, 2020
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524
1
The lateral surface area of a cylinder
The lateral surface area of a cylinder is 80% of its surface area. What is the ratio between the base radius and the height of the cylinder?
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Guest
Nov 15, 2020
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344
1
If x% of four-digit numbers have a repeated digit
If x% of four-digit numbers have a repeated digit of 3, then what is x ? Express your answer as a decimal to the nearest tenth.
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Guest
Nov 15, 2020
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435
2
Unrolling the curved surface
A cone has a lateral surface area of 540pi and a slant height of 36. Unrolling the curved surface gives a circular sector with center angle n degrees. Find n.
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Guest
Nov 15, 2020
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