2,563 Answered Questions for the topic Maths

04/09/21

How do we solve this integral?

Evaluate the following integral using a change of variables. ∫∫((y-x)/(y+2x+1))^4 dA, where R is th parallelogram bounded by y-x=2, y-x=3, y+2x=0, and y+2x=3R
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04/09/21

is a circle with the centre the origin. A tangent to C passes through the point (-20,0) and (0,10). Work out an equation of C. You must show all your working. how to get the full 5 marks.
How to get the full 5 marks and is the answer x^2 + y^2 = 100
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04/07/21

can someone explain what am suppose to do?

1.An Exercise class is 90 minutes long. How many seconds are in these 90 minutes ? 2.A display of book at a library has 6 fiction books for every 2 nonfriction books how many books are displayed... more
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04/07/21

Figure out the area of a field with a scale.
The scale on a map is 1:50,000. The area of a field on the map is 1.2 square centimetres. Calculate the actual area of the playing field in square kilometres.Here I thought you would multiply... more
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04/07/21

Find the volume of a mathematically similar glass when given the height and volume.
There are two mathematically similar glasses. One has a height of 16cm and a volume of 375cm3. The other has a height of y cm and a volume of 192cm3. Find the height, y.I thought here because they... more
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04/03/21

If (5,−3) is a point on the graph of an odd function f, find the coordinates of two non-zero points on the graph of f^-1
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04/01/21

how do i convert 65±5 (Mean±SEM) mmol/g to nmol/g?
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04/01/21

A baseball is hit into the air a table shows how its height change over time.The relationship between x time in seconds and y the baseball height can be described by y=−16x2+bx. when it hits ground?
a baseball is hit into the air. The height shows how its height changes over timehttps://docs.google.com/document/d/1-zDRfiOH_K3_0Z4xV6zfGVW5AYpgDzmPLV2HAwWCyr0/edit?usp=sharingthe relationship... more
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04/01/21

The linear factors of a quadratic expression are (x – a) and (x – b), where a and b are constants, and a > b > 0. Which of the following is true about the zeros of the related quadratic function?
The linear factors of a quadratic expression are (x – a) and (x – b), where a and b are constants, and a > b > 0. Which of the following is true about the zeros of the related quadratic... more
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04/01/21

Growth trend:The graph shows the number of students enrolled in a high school over a 7-year period. If this trend continues, approximately how many students will be enrolled in year 9?

The graph shows the number of students enrolled in a high school over a 7-year period.(i cant attach a pic sry)Year 1: 1200 studentsYear 2: 1350 studentsYear 3: 1450 studentsYear 4: 1600... more
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03/31/21

Base equation: y = 2^x, vertical stretch by a factor of 3, shifted down 4 units
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03/30/21

If a number is increased by 4, its square is increased by 64. Find the number
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03/30/21

The length of a rectangular door is 24 feet less than three times its width. Solve for parameter.
You have a door. you know the length is 24 less than three times its width. You need to know the parameter to see if it will fit your doorframe. ___w___ | |3w-24... more
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03/28/21

Integral logarithmic calculus math help.
Pls find ∫x(2+x)logx2dx I dont know how to do calculus of a logs base, here x is the base of the log.
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03/28/21

Let f be an enumeration function of an enumerable set S. For each of the sets below,
Let f be an enumeration function of an enumerable set S. For each of the sets below,state whether it is enumerable or not. If it is, give a function that enumerates it and provethat this function... more
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03/28/21

Let A = {n♥| n ∈ Z}. Examples of lements of A are 0♥, −10♥ and 10♥. Show that A is countable by enumerating its elements and then, give a compact definition of your enumeration function.

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03/27/21

Show that {+, −}∗ , the set of all finite strings of pluses and minuses is enumerable by listing all its elements.
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03/27/21

Let R = {(n, −n) | n ∈ Z and n ≤ 0} ∪ {(n, n + 1) | n ∈ N}. Is R a function? Justify your answer.
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03/27/21

I need help on these two trigonometry questions
Use the given information to find the values of the other five trig functionsTan theta = -8/15, pi < theta < 2piSin thetaCis thetaSec theta Csc theta Cot thetaCsc theta=4 , pi/2 < theta... more
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03/26/21

Please answer this
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03/26/21

Please help me answer this question
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03/26/21

Please help me answer this question
https://gyazo.com/155402dc3d1d766a2eb7f5c7d9995d6f
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03/26/21

Please help answer this question
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03/26/21

Please help answer this question
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03/26/21

Please help me answer this question
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