6,938 Answered Questions for the topic mathematics

08/11/21

Discrete Math Question (Urgent)

Let n ∈ ω. Suppose that f : n → A is onto A. Prove that A is finite.

08/10/21

Pattern Practice, College Mathematics

X, 2X + 11 and 4X - 3 are consecutive terms of an arithmetic sequence. Find the constant difference between terms. Give a formula for finding the nth term of the sequence. Use your formula to find... more
Mathematics

08/10/21

LENGTH OF WEEKS INCREASE/DECREASE?

Your unit has 80 Employees and enough supplies that will last for 10 weeks for those employees. However, management just decreased your unit to 70 employees and left the same 10 week amount of... more
Mathematics Math Precalculus Sat Math

08/10/21

Need help its urgent

Determine the following about each graph: a) is the graph a function? b) is the inverse of the graph a function? c) is the graph a one-to-one function?. . 
Mathematics Math Calculus Geometry

08/09/21

Equations of Lines and Planes

If the line L is given by x= 2+ 3t , y=1- 2t , z= t, then it could also be written in symmetric form as(x-2)/6 = (y-1)/ = z/
Mathematics Math Calculus Geometry

08/09/21

Vectors and the Geometry of Space

Find the distance of the point (4,6,−4) from the line r(t)=⟨−1+3t,1+3t,5−3t⟩.Answer:
Mathematics Math Calculus Geometry

08/09/21

Vectors and the Geometry of Space

Find the distance from the point (-1, -4, 0) to the plane −3x −y + 3z =3
Mathematics Math Calculus Geometry

08/09/21

Vectors and the Geometry of Space

Let a=(3,3,6) and b=(9,2,1) be vectors.Compute the cross product a×b.a×b = ( , , )
Mathematics Math Calculus Geometry

08/09/21

Vectors and the Geometry of Space

Let a=(−5,0,1) and b=(5,−8,3) be vectors.(A) Find the scalar projection of b onto a.Scalar Projection: (B) Decompose the vector b into a component parallel to a and a component orthogonal to... more
Mathematics Math Calculus Geometry

08/09/21

Vectors and the Geometry of Space

Determine whether the given vectors are orthogonal, parallel, or neither.1. v=⟨1, 2,−1⟩ and w=⟨−10,−20,10⟩. 2. v=⟨5, 10,14⟩ and w=⟨10,−5,0⟩. 3. v=⟨10, 20,−30⟩ and w=⟨−30,20,10⟩.
Mathematics Math Calculus Geometry

08/09/21

Vectors and the Geometry of Space

Find a unit vector in the same direction as a=(8,10,4).
Mathematics Math Calculus Geometry

08/09/21

Vectors and the Geometry of Space

Two forces, represented by the vectors F1 =8i +4j and F2 =−2i +5j , are acting on an object. Give a vector F3 representing the force that must be applied to the object if it is to remain... more
Mathematics Math Calculus Geometry

08/09/21

Vectors and the Geometry of Space

Let a=(−2,−10,−2) and b=(8,−3,4) be vectors. Compute the following vectors. A) a+b = ( , , ) B) 7a = ( , , ) C) a-b = ( , , ) D) |a| =
Mathematics Probability

08/09/21

Help with Permutation and combination question!

You have 10 concert tickets of EDM and 7 concert tickets of classical singer . What is the total number of ways in which tickets can be given to three person if they may receive any number of... more
Mathematics

08/02/21

If x is 30°, verify: Sin 2 x= 2 tan x/ 1+ tan²x​ without using tables.

Mathematics Math

08/01/21

Help with math please

A book sold 31,500 copies in its first month of release. Suppose this represents 8.9% of the number of copies sold to date. How many copies have been sold to date? Round your answer to the nearest... more
Mathematics Math Sat Math

07/31/21

Help with math please. Long question.

Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $23 monthly fee and charges an additional $0.11 for each minute of calls. The second... more
Mathematics Math Sat Math

07/31/21

MATH! Money problem

A garden table and a bench cost $450 combined. The cost of the garden table is two times the cost of the bench. What is the cost of the bench?
Mathematics Math Sat Math

07/31/21

HELP Math difficult

The circumference of a circular garden is 106.76 feet. What is the radius of the garden? Use 3.14 for π and do not round your answer.
Mathematics Math

07/31/21

Help finding width

The length of a rectangle is four times its width. If the perimeter of the rectangle is 80yd, find its area.
Mathematics Math Algebra 1 Algebra 2

07/30/21

algebra question

Incline mats, or triangle mats, are offered with different levels of incline to help gymnasts learn basic moves. As the name may suggest, two sides of the mat are right triangles. If the height of... more
Mathematics Math Algebra 1 Algebra 2

07/30/21

Math question.. thank you.

Bill uses mirrors to augment the “laser experience” at a laser show. At one show he places three mirrors, A ,B, C,  in a right triangular form. If the distance between A  and B is 8 m more than the... more
Mathematics Math Algebra 1 Algebra 2

07/30/21

THANKS IN ADVANCE!

An architect wants to draw a rectangle with a diagonal of 25 millimeters. The length of the rectangle is to be 10 millimeters more than twice the width. What dimensions should she make the rectangle?  more
Mathematics Math Algebra 1 Algebra 2

07/29/21

Help me, thanks!

The difference between two positive integers is 6. If the smaller is added to the square of the larger, the sum is 104 . Find the integers by solving the equation.

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