59,485 Answered Questions for the topic Math

Math

03/24/24

Annual Interest Rate

 In 8 months, Alex will need $1,430.00 to pay her college tuition. How much does she need to invest today into an account earning an an interest rate of 7.716% compounded monthly, so that she has... more
Math

03/24/24

Annual Interest Rates

 For how many months do you need to invest your money into a bank account earning an annual interest rate of 11.59% compounded monthly if you want to triple your investment?
Math

03/24/24

Annual Intrest Rate

What annual rate of interest compounded annually is required to double an investment in 13 years?
Math

03/24/24

Find the percentage of the increase or decrease

A bear weighed 13 stone 10 pounds. After months of hibernation it weighed 12 stone 8 pounds.There are 14 pounds in a stone.Calculate the reduction in the bear's weight as a percentage of its... more
Math

03/23/24

4*7*10+7*10*13+10*13*16+……+(3n+1)(3n+4)(3n+7)=

Linear Algebra NullSpace, Rank

Let A = (a1 a2 a3 a4 a5), where ai is the i-th column of A, for i = 1,..., 5. It is known thata1 = (1 -1 0 0), a3 = (-2 0 1 1), a5 = (-3 3 4 3).Suppose A is row equivalent to R = (1 2 -1 2 -1; 0 1... more

Calculus Help!!!

Evaluate (an integral f) sec^2 (x)(1+tan^3(x))dx

Calculus Help!!

Determine the area of the region bounded by x=3+y^2, x=2-y^2, y=1, y= -2

Calculus Help!!

a) Evaluate the Rieman sum for f(x) = 5x^2-2x, taking the sample points to be right endpoint and a=0,b=4, and n=2b) Evaluate (an integral of f 0 at the bottom and 4 at the top) 5x^2-2xdx, Using... more

Calculus Help!!!

if f(2)=16, f' is continous, and (the integral of f2(at the bottom) and 6 as an exponent) f'(x)dx=19. what is the value of f(6)?

calculus Help!!

if (an integral (f0^9)) f(x)dx=37 and (another integral f0^9) g(x)dx=16, Find (an integral f0^9) [2f(x)+3g(x)]dx

Calculus Help!!

let f'' = x^6-4x^4+x+1 find f(x)
Math

03/22/24

mathhhhhhhhhhhhhh

A company makes concrete bricks shaped like rectangular prisms. Each brick is 12 inches long, 6 inches wide, and 5 inches tall. If they used 12600 in squared 3 of concrete, how many bricks did... more

Linear Algebra question

Find the shortest distance from the point P=(-3,-2,-3) to a point on the line given by 1: (x,y,z) = (-7t, 1t, 1t). Please help ASAP! Thanks!

Linear Algebra (Basis)

Given A^T * A = (3 4 0; 4 10 -3; 0 -3 3).(a) Solve the homogenous system Ax = 0. Explain how you derive your answer.(b) Suppose (A^T * A)^-1 * A^T = (3/5 -4/5 0 3/5 1/5; -1/5 3/5 0 -1/5 -2/5; -1/5... more

Linear Algebra Row/Col Spaces

Let T = { v1 = (2 1 1 3), v2 = (3 2 0 1), v3 = (1 0 2 5), v4 = (-1 -1 1 2) v5 = (3 2 0 0), v6 = (13 8 2 8 ) }(a) Find a linearly independent subset S of T such that span(S) = span(T).(b) Does T... more

03/22/24

Linear Algebra ( Subspaces )

Let vector w = (1, 1, 2, -1).W = { u ∈ R^4 | u ⋅ w = 2 }, and V = { u - (1, 0, 1, 1) | for all u ∈ W }.(a) Is W a subspace? Explain your answer.(b) Show that V is a subspace and that T = {... more
Math

03/22/24

help pleaseeeeeeeeeeeeeeeee

A scale that ranges from minus 7 to minus 4. The region from minus 6.75 to minus 4.25 is highlighted. What is the length of the red line segment on the number line?
Math

03/22/24

help pleaseeeeeeeeeeeeeeeee

A scale that ranges from minus 7 to minus 4. The region from minus 6.75 to minus 4.25 is highlighted. What is the length of the red line segment on the number line?
Math Calculus

03/22/24

Need help with this Calculus problem!

5. The integrals defined in line (3) are meaningful numbers for any integrable function f. Treating a given function as if it were a combination of periodic functions opens the door to Fourier... more
Math

03/22/24

What is the answer below

Here is a scatter plot that shows the most popular videos in a 10-year span.  Use the scatter plot to estimate the number of views for the most popular video in this 10-year span. 
Math Calculus

03/21/24

Suppose we want to integrate

Sometimes we switch coordinates because it makes the integrand easier. Let D� denote the triangular region with vertices at (0,0),(1,0) and (0,1). This region is not round. However, suppose we want... more
Math

03/21/24

Related Rate for Calculus 1

Water is flowing into a vertical cylindrical tank of radius 3 meters at the rate of 18 cubic meters per minute. How fast is the water level rising?
Math

03/20/24

Use the distributive property to express 8+36

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