20,417 Answered Questions for the topic Algebra

07/02/21

Math plz help me and show how you got your answer

Sarah wanted to catch Jim. However, although they started at the same time, Jim traveled at 80 km/h and Sarah traveled at 120 km/h. How much of a head start did Jim have if it took three hours for... more
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07/02/21

Math plz show how you got your answer thanks

At midnight, two ferries that were 800 miles apart started travelling directly towards each other, but one ferry was travelling 40 mph faster than the other. Sadly, at 8 a.m., they collided. What... more
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07/02/21

Verify the identity

How would I verify this identify. Thank you.2 sin (𝜋/4 + 𝑥−𝑦/2) cos (𝜋/4 + 𝑥+𝑦/2) = cos𝑥−sin𝑦
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07/02/21

How would I write this as a sum or difference?
Cos x/2 cos 3x/2I know I would use one of the products to sum or sum to product formulas. however I don't know which one to use nor how I would use it in this problem. Thank you.
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Algebra

07/02/21

write the equation of the line that has slope -2/3 and passes through the point (6, 2)

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Algebra

07/02/21

An object is thrown upward at a speed of 92 feet per second by a machine from a height of 18 feet off the ground.

An object is thrown upward at a speed of 92 feet per second by a machine from a height of 18 feet off the ground. The height hh of the object after tt seconds can be found using the... more
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Algebra

07/01/21

Can you help explain how I can simplify/find an equivalent expression to x^2 - 8x + 5
The question says, "Which of the following is equivalent to the expression above?" with the expression being x^2 - 8x + 5The answer is (x - 4)^2 - 11 but I don't understand how I can get to that... more
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06/30/21

The step by step process of the given.
Answer must be in EXACT form only. Determine the area common to r= 3+3 sin θ and r=3.
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06/30/21

What is the relation between y=sinx and y=cosx ? Explain it in 3-5 sentences..
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06/30/21

Find the domain and range of x+1/x-2.
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06/30/21

How would I find this, given the equation?
Given: sin𝛼 =3/8,𝜋/2 < 𝛼 < 𝜋;cos𝛽 =12/13,3𝜋2 < 𝛽 < 2𝜋How would I find? 1) sin 2𝛽 =and2) sin𝛽/2 =I drew a triange to find sin,cos,tan,etc however I don’t know what to do from there?... more
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Algebra

06/30/21

HELP ME SOON PLZ
A ball is thrown from an initial height of 5 feet with an initial upward velocity of 23/fts. The ball's height h (in feet) after t seconds is given by the following.=h+5−23t16t2Find all values... more
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Algebra

06/29/21

Algebraic Expressions
Jericho can finish a computer graphics job twice as fast as Clarence, working together, it takes them 5 hrs, how long would it take Jericho to finish the job alone? 
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Algebra

06/28/21

HELP ME SOON PLEASE
Consider the line =y+45x7.Find the equation of the line that is parallel to this line and passes through the point −8− 2Find the equation of the line that is perpendicular to this line and passes... more
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Algebra

06/28/21

Solve (4D+-8D³-7D² +11D+6)y=0.
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Algebra

06/27/21

Erica rows a boat downstream for 60 miles. The return trip upstream took 24 hours longer. If the current flows at 4 mph, how fast does Erica row in still water?
Erica rows a boat downstream for 60 miles. The return trip upstream took 24 hours longer. If the current flows at 4 mph, how fast does Erica row in still water?She rows=Evan flies a plane against a... more
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06/27/21

Given the function f( x ) = 4x + 1 evaluate and simplify the expressions below. See special instructions on how to enter your answers.
Given the function f( x ) = 4x + 1 evaluate and simplify the expressions below. See special instructions on how to enter your answers.f (a)=____f (a+h)=___f(a+h). - f(a)/h =______Simplify answers... more
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06/27/21

A rectangular lot has dimensions.
Length- x-1/2 metersWidth- 4x/x-1 metersa. What is the rational expression that represents the perimeter of the lot?b. When x=5, how many meters is the length longer than the width?
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06/27/21

Need help. ASAP!
A. Maria performed the synthetic division below for (x4 + 3x2 - 2x) á (x - 4). There are three errors. Explain the errors and enter the correct solution: B. Julie applied Pascal's triangle to the... more
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Algebra Math

06/27/21

the sum of two numbers is 115 while their difference is three times the smaller number. Find the larger number
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Algebra

06/26/21

Rebecca is 8 years younger than twice Emanuel's age. Write an expression for Rebecca's age. Let x represent Emanuel's age.
Im having trouble with this question
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Algebra Algebra 2

06/26/21

Solving Sequences
An= 4an-1 + 1/2If the 3rd term in the sequence is 322.5, what is the value of the second term?The answer is 80.5, but I am looking for HOW to solve this:322.5 = 4a2 + 1/2
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06/26/21

Find the inverse function of f(x)= 1/(3x−1)
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06/25/21

Need help asap!
1. Jerry subtracted two polynomials and his incorrect solution is shown below. Explain the error(s) and enter the correct solution. (x3 + 2x2 - x) - (3x3 - 3x2 + 2x - 4) =-2x3 - x2 + x + 42. Paula... more
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06/25/21

Find the inverse function of f(x)= 1/3x−1 . Let, f(x)=3x+7,g(x)=2√x−3 . Find f(g(3)) and g(f(3)).
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