6,938 Answered Questions for the topic mathematics

Mathematics Differentiation

04/20/21

Find dy/dx of the following question
Find 𝑑𝑦/𝑑𝑥 for the following 𝑥2 = 𝑦2 + sin 𝑥𝑦
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Mathematics Trigonometry

04/20/21

Find the period,sub interval,build table and sketch graph
Given 𝑦 = 1 - sin(2𝑥 - 𝜋) , 0 ≤ 𝑥 ≤ 2𝜋 a) Find the period. b) Find the subinterval. c) Build table of values for 𝑦 and 𝑥. d) Sketch the graph for 0 ≤ 𝑥 ≤ 2𝜋
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Mathematics

04/20/21

A full year membership to a gym cost $325 with no monthly charge a monthly membership cost $100 up front and $30 per month for what numbers of months is it less expensive to have a monthly membership

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Mathematics

04/20/21

The difference between 10 and 5, added to 36
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Mathematics Math Calculus Precalculus

04/20/21

Finding Unit Vector that is Perpendicular

If vector b=[3,6,2] and vector c=[0,0,8], find a unit vector perpendicular to both vector b and c.
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Mathematics Elementary Math

04/20/21

FINANCIAL LITERACY

A pack of 10 pencils cost $4.50, 24 pencils costs $10.00 and a pack of 50 pencils costs $22.00. What is the most economical way to purchase pencils?
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Mathematics Math Algebra 2 Maths

04/20/21

if f = {(0,2),(2,6),(3,15),(4,9)} and g = {(3,4),(2,1),(4,6),(5,9)} what is (f*g)(3)
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Mathematics Integral Calculus

04/20/21

Solve integration
Solve ∫(√𝑎 - √𝑥)2 𝑑𝑥, 𝑎 is a constant.
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04/20/21

Find initial value of differential equation
Solve the initial-value problem that consists of the differential equation sec x dy + csc y dx = 0 and the initial condition y(1)= π/2 .
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Mathematics Math Sat Math Act Math

04/20/21

Show that the given functions are orthogonal on the indicated interval.
F1(x)=x , F2(x)=cos2x  ,[-pi/2,pi/2]
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Mathematics Math Test Help

04/19/21

math test please help fast
David had $35 to spend at the fair. If the admission to the fair is $4.5 and the rides cost $1.50 each, what is the greatest number of rides David can go on? A. Write an inequality that represents... more
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Mathematics

04/19/21

The sum of two consecutive even numbers is 470.What are they?
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Mathematics

04/19/21

An 8-foot ladder is leaning against the wall of the building. The base of the ladder is 4 feet from the base of the building. At what height does the ladder reach on the building?
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Mathematics Math Algebra 1 Algebra

04/19/21

X-y=10. 3x+y=18
Use elimination for this problem
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Mathematics Math Sat Math Act Math

04/18/21

Solutions of an inequality
With what value of a the solutions of the inequality are all real numbers?1. 0.2^x+3 > a-22. (1/5)^x+3 > a^2-9a
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Mathematics Math

04/17/21

Fibonacci number question help
Write 547 as a sum of Fibonacci numbers where no Fibonacci number occurs more than once.A. 347 + 174 + 21 + 5B. 357 + 164 + 21 + 5C. 367 + 154 + 21 + 5D. 377 + 144 + 21 + 5
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Mathematics Math

04/17/21

Proving Continuity at 2 points ONLY
I have a piecewise function: f(x) = 0 if x is rational = x(x-1) if x is irrational I want to prove that this function is continuous at exactly two points
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04/17/21

Use matrices to solve system of eq (if possible). Use Gauss elimination w/ back-substitution. (If no solution, enter NO SOLUTION. If system is dependent, set w = a & solve for x, y & z in terms of a.)
x-4y+3z-2w= 163x-2y+z-4w= -10-4x+3y-2z+w= -5-2x+y-4z+3w= -19(x, y, z, w) = (______)
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04/17/21

Write the system of linear equations represented by the augmented matrix. (Use the variables x, y, z, and w, if applicable.)
7 -5    -148 3 -16= ________ ________
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Mathematics Math Algebra 2 Calculus

04/17/21

State the elementary row operations applied to the first augmented matrix A to transform it to its row-equivalent matrix B.
A = 1 −2 7 6 4 1 B = 1 −2 7 0 16 −41 A: 2R2 + R1B: 5R2 - 15R1C: (-6)R1 + R2D: Interchange R1 and R2E: None of these
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Mathematics Math Algebra 1 Algebra 2

04/17/21

Write the matrix in row-echelon form. (Note: Row-echelon forms are not unique.)
1 2 -1 63 7 -5 5-2 -1 -3 2= ____ _____ ____ ____ ____ _____ ____ ____ ____ _____ ____ ____
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04/17/21

Use matrices to solve the system of eqs (if possible). Use Gauss-Jordan elimination. (If no solution, enter NO SOLUTION. If system is dependent, set z = a and solve for x and y in terms of a.)
2x+2y-z= 14x-3y+z= -30-x+y =12(x,y,z) = ______
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Mathematics Math Algebra 2 Calculus

04/17/21

Use matrices and Gauss-Jordan elimination to solve systems of linear equations
The matrix 1 0 4 0 0 1 −6 −1 0 0 −5 5 can be reduced in the row echelon form 1 0 0 a 0 1 0 b 0 0 1 c where a, b, and c are real numbers. Find a. (Enter an exact number.)a = ____
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Mathematics Math Sat Math Act Math

04/16/21

What is the center and radius of the circle represented by the equation (x – 9)2 + (y + 2)2 = 4?
A.center: (–9, 2), radius: 4B. center: (–9, 2), radius: 16C. center: (9, –2), radius: 4D. center: (9, –2), radius: 2
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Mathematics Math Sat Math Act Math

04/16/21

The vertices of GHJK are G(–1, 0), H(1, 6), J(5, 6), and K(5, 2). What is the most precise classification of GHJK?
A.quadrilateralB.trapezoidC.parallelogramD.kite
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