2,572 Answered Questions for the topic Maths

10/09/20

What is wrong with this proof of finite sets?
Let A, B, C, D be finite sets with A⊆C and B⊆D. What is wrong with the following incorrect proof that A×B⊆C×D.Proof:Since A⊆C we have that |A|≤|C|. Since B⊆D we have that|B|≤|D|.We know that... more
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10/07/20

Maths - Lower Bounds & Upper Bounds(Real Numbers)
What is the upper bound of the infinite sequence 1/x^2, where xE{R\0}We know that x={1, 1/4, 1/9, 1/16,.....} Since all x here are greater than 0 or less than equal to 1.Can't we take 1 as an upper... more
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10/06/20

Point P is in the interior of ∠NOQ. If m∠NOP = 37° and m∠NOQ = 123°, what is m∠POQ?
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10/05/20

Give an algorithm to check whether a given undirected graph has cycles of odd length. The length of a cycle is the number of vertices (or equivalently, the number of edges) in the cycle.

Use Breadth First Search (BFS).
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Maths

10/04/20

Math and History
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Maths

09/30/20

Two more than 4 times a number is -18
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Maths Geometry

09/27/20

Let P = (2,7), B = (6, 11), and M = (5,2). Find a point D that makes ray PB congruent to ray DM. What can you say about quadrilateral PBMD?
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Maths Integral

09/25/20

using integrals find the area of the region bounded by the line 2x-y+2=0, the x-axis and the ordinates x=-3 and x=0
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Maths

09/25/20

Expand the following and simplify where possible. maths question
27 + (6x - 9) - (32 -17) + x - (2x + 1)    27 + (6x - 9 - 32 -17) + (x - 2x + 1)    27 + 6x - (9 - 32 -17 + x) - 2x + 1   
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Maths

09/25/20

Algebraic Notation
Write down an algebraic equation for the phrases below.The sum of x and 96 equals half of x:  Four times the number m equals 36:
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Maths Geometry

09/25/20

Perimeter and Area
Calculate the internal area of the living room: internal length 5.2minternal width 2.95Select the appropriate unit of measurement:___
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09/23/20

What is the sum of the terms of the geometric sequence 2, 6, 18, 54, ...?
What is the sum of the terms of the geometric sequence 2, 6, 18, 54, ... ?
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09/22/20

Calculus 2 MacLaurin Series
Let F(x) = ∫ (from 0 to x) e-3t^4 dtFind the MacLaurin polynomial of degree 5 for F(x).
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09/22/20

convex quadrilateral problem
Dear Sir or Madam,The lenght of the sides of a convex quadrilateral, in clockwise order,are a,b,c,d. How can I prove that a,b,d, c are consecutive terms of an arthmetich progression,then the... more
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09/22/20

Math Problem "Which subjects are each of them studying?"
Smith, Jones and Browne are part-time students at a college. They each study 2 of the following subjects: English Literature, Physics, Car-mechanics, Chemistry, Math's and French. The following is... more
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09/21/20

Calculus 2 Series
Find the sum of the series ∞ ∑ (-1)n [(x15n)÷(n!)]n=0It will be a function of the variable x
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09/21/20

Discrete Math Counting Question
How many 10-digit telephone numbers (that is, length-10 sequences with entries from ) are there for which no two adjacent numbers are both even or both odd?I calculated 14400 from 5! * 5! but this... more
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09/21/20

The length of a rectangle is three more than twice the width. The perimeter is 98. What are the dimensions?
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Maths Geometry

09/21/20

what is the area of right angle triangle?
if the triangle abc is 90 degree at b and ab=3, ac=5 then find the base and area of triangle?
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09/18/20

While proving the continuity of function f(x)=sin(x) or f(x)=cos(x) why do we put sin(c+h) or cos(c+h) in place of x ? Please explain

Example: Lim f(x) = Lim [sin x] = Lim [sin (c+h)] X tends to 0
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09/17/20

use the vertex (h, k) and a point on the graph (x, y) to find the general form of the equation of the quadratic function
(h, k) = (3, 2), (x, y) = (10, 1)
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09/17/20

How long does it take to reach maximum height
A ball is thrown in the air from the top of a building. Its height, in meters above ground, as a function of time, in seconds, is given by h(t) = −4.9t^2 + 24t + 8. How long does it take to reach... more
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09/15/20

Which quadrant does θ lie in?
Which quadrant does θ lie in?csc(θ)< 0 and sec(θ)>0
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Maths Fractions

09/14/20

There are 3 times as many females as males on the maths course at university. What fraction of the course are female? Give your answer in its simplest form
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09/13/20

Please help me with this!
In a candy bag there are 50 candy cars, white, green and pink. You take two. How many candy cars of the different colors are there if the probability of taking two green cars with return is 0.25... more
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