2,563 Answered Questions for the topic Maths

10/29/21

Simplify each expression (if it is already simplified, state that it is already simplified):
a). 4x8-y3+33/14zb). 4C-5C+6C-7C+8C2c). (4D)(-5D)(6D)(-7D)(8D2)d). -12(444cd5e6543/F-G)0-10x0e). (3xy2)10(x3y)2+(2x2)8(-7y6)4
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10/29/21

An oil tanker train car is in the shape of a cylinder (on its side).
An oil tanker train car is in the shape of a cylinder (on its side). The train car is 75 feet long and 8 feet 6 inches across (and so 8 feet 6 inches for the diameter). Approximate the capacity... more
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10/29/21

Looking at the houses for sale in a certain city:
Looking at the houses for sale in a certain city: 12 are listed at $300,000; 6 are listed at $400,000; 8 are listed at $500,000 and 2 are listed at $1,450,000. a) Find the mean, median, and mode... more
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10/28/21

Probability Question
I want to check my work for this question, my answer is 0.131 but I think I might have calculated this wrong.Question: The US preterm birth rates have declined between 2006 and 2008. In 2008, the... more
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10/28/21

AMDM (Mathematics) Question
A vector starts at point ( 7, -5) and ends at point (9, -4) what is the vertical component of the vector?
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10/28/21

AMDM (Mathematics) Question
A person is pushing on a car with a force of <25,-13> and another person is pushing on a car with a force of <18,2>. What is the net force in the vertical direction?
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10/28/21

AMDM (Mathematics) Question
A person is pushing on a car with a force of <19,-15> and another person is pushing on a car with a force of <17,9>. What is the net force in the horizontal direction?
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10/28/21

AMDM (Mathematics) Question
One force of magnitude 79 acts on an object. Another force of magnitude 61 acts on the object at a right angle, what is the magnitude of the resultant force on the object?
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Maths

10/27/21

There were 4,000 people at an outdoor festival. The ratio of children to adults at the festival was 3:5. Find the number of children at the festival.
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10/26/21

Line g contains A(–4, 3) and B(3, 1). Line h contains S(–1, –1) and T(6, y). In order for g to be parallel to h, what is the y-coordinate of T?
A)-3B)-1C)0D)1
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10/26/21

Write an equation that gives the distance travelled by the falling object in the nth second (i.e., an). How many feet would an object fall in the tenth second?

To prove that objects fall at the same rate, Galileo dropped two objects with different weights from the Leaning Tower of Pisa in Italy. The objects hit the ground at the same time. When an object... more
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10/26/21

Find the sum of the first 23 terms of the arithmetic sequence 4m-3,-10,….
Find the sum of the first 23 terms of the arithmetic sequence 4m-3,-10,...
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10/26/21

An arithmetic sequence or progression is given by k,2k/3,k/3,0,…
An arithmetic sequence or progression is given by k,2k/3,k/3,0,...a)   Find the sixth term. b)   Find the nth term.c)   If the 20th term is equal to 15, find k.
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10/26/21

Find the 17th term of the arithmetic progression with first term 5 and common difference 2.

 Find the 17th term of the arithmetic progression with first term 5 and common difference 2.
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10/25/21

Find S4 of the sequence 105+110+115+⋯.
Find S4 of the sequence 105+110+115+....
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10/25/21

Find the 100th term in the sequence an=−18/n.
Find the 100th term in the sequence an=−18/n.
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10/25/21

Rewrite the series 1+12+27+⋯ using sigma notation.
Rewrite the series 1+12+27+...  using sigma notation.
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10/23/21

Focus Problem- Math
For 87 days in the spring and summer of 2010, British Petroleum's Deepwater Horizon spilled millions of gallons of crude oil into the Gulf of Mexico, resulting in one of the largest oil spills in... more
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10/23/21

Problems Involving Conic Sections
Find the standard equation of the ellipse whose major and minor axes are the transverse and conjugate axes (not necessarily in that order) of the hyperbola y 2 -x2 -4x-4y-4=0.
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10/23/21

Problems Involving Conic Sections
Find the standard equation of the parabola opening to the left whose axis contains the major axis of the ellipse 4x2 +9y2 =144, whose focus is the center of the ellipse, and which passes through... more
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10/23/21

Problems Involving Conic Sections
Find the standard equation of the hyperbola whose conjugate axis is on the directrix of the parabola y2 -5x+12y=-16 , having the focus of the parabola as one of its foci, and the vertex of the... more
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10/23/21

Problems Involving Conic Sections
1.   Find the standard equation of the hyperbola whose conjugate axis is on the directrix of the parabola y2 -5x+12y=-16, having the focus of the parabola as one of its foci, and the vertex of the... more
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10/22/21

The angles of a triangle are (2m-20)°, 30° and (m+20)°. Find m.
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10/22/21

An arch in the form of semi – ellipse is 50 feet wide at the base and has a height of 16 feet. How wide is the arch at the height 8 feet above the base?

An arch in the form of semi – ellipse is 50 feet  wide at the base and has a height of 16 feet. How wide is the arch at the height 8 feet above the base?
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Maths Trigonometry

10/21/21

CAST diagram Maths
Having never learned this and now in the thick of it for a degree, I am struggling with the below. This is an example of an exercise we have been given and with a written exam coming up end of this... more
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