19,133 Answered Questions for the topic Algebra

03/20/22

please help with this petsmart statistical probability question!!
Customers entering Petsmart were surveyed at random about what type of pet they had. The results showed that the probabitlity of a person owning a dog was .56. The probabilty that a person had both... more
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03/20/22

Your friend has loaned you $2500. Each week, you pay back $75 to this friend.
Your friend has loaned you $2500. Each week, you pay back $75 to this friend.a). Complete the following table, where m = number of months and d = debt owed. m d ... more
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03/20/22

Please help me to solve this.
At a particular gas station gas costs $3.35 per gallon, but if you buy a $4.50 car wash gas only costs $3.05 per gallon. Let C represent cost and g represent the number of gallons.a). Write an... more
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03/19/22

Assume an exponential function has a starting value of 5 and decay rate of 13%. Write an equation to model the situation.
Assume an exponential function has a starting value of 5 and decay rate of 13%. Write an equation to model the situation.
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03/19/22

If a staircase has 8 inches of rise for every 12 inches of tread, what is the slope of the staircase?
If a staircase has 8 inches of rise for every 12 inches of tread, what is the slope of the staircase?
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03/19/22

Factor the following expressions.
Factor the following expressions.a). 4x3y2-8xy2+32x3y3b). -2m2n-34mn-144nc). 9x2-25y2
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03/19/22

Fill in each blank with the appropriate word or phrase.
Fill in each blank with the appropriate word or phrasse.a). When solving systems of two equations you can have ___, ___, or ___ numbers of solutions.b). Rate of change is another name for... more
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Algebra

03/19/22

Help please, we didn't learn this in class
The profit (in dollars) for a certain commodity, n, where n is in units, is given by the function: P(n)= -25n^2+350n+1275 A) What is the input variable and its units ?B) What is the output variable... more
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03/19/22

A point is pulled by two ropes...
A point is pulled by two ropes: one to the left and up 34° with a magnitude of 5, the other to the right and up 16° with a magnitude of 7. What is the resultant force on the point?(A) 28.98∠9.4°(B)... more
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03/19/22

Please please help
Solve for z:x = 2.5yx + y + z = 66x - 2y - 2z = -12(A) z = -120(B) z = 16(C) z = 10(D) z = -74(E) None of these
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Algebra

03/19/22

Adding / subtracting negatives and positives

Find each sum or difference and explain your reasoning: a. +11 - +23b. +7+-3 c. -20 + -7 d. -13 - -18
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Algebra

03/19/22

Word problem with adding and subtracting negatives
Write an interesting story that includes several opportunities to solve expressions, including: 8 + -20
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Algebra

03/19/22

Adding/subtracting negatives
Explain why -(a - b) = b-a
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Algebra

03/19/22

Adding / Subtracting negatives

Suppose one of your students asks, "Why does -(-a) = a?" What could you say to help develop understanding for this student?
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Algebra

03/19/22

Among all rectangles that have a perimeter of 208, find the dimensions of the one whose area is largest. Write your answers as fractions reduced to lowest terms.
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03/18/22

Please help!! I cant find the last two

For each pair of functions, find  and  . Determine the domain of  and the domain of . Show your work4.  and 5.  and 
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Algebra Math

03/18/22

Luis plans to put $25 a week into a savings account from the part-time job he started. If he has $350 in savings now, Luis did not add money to his account at the end of the first week of work

Create a function that can be used to find the amount in dollars a Luis has in his bank account at the end of w week of work, where w≥ 1?
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Algebra

03/18/22

Need help with second part of assignment

Cobalt-57 is used in medical testing and has a half-life of about 272 days, which means after 272 days, half of the Cobalt-57 has decayed to a less radioactive and more stable form. The function... more
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03/18/22

how do i find if a transition is smooth between two functions using derivatives?
i have two functionsone is an ex function f(x) = -ex+46.46 {-4 < x < 0} . the derivative is -exthe second is a straight line f(x)= -1.32x+45.46 {0 < x < 16.84}. the derivative is... more
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Algebra Math Set Theory Sets

03/18/22

What is A' ∩ (B-C)?
Let A = {1,2,3,6,7} B= {2,4,5,7} and C = {2,4,6} and U = {1,2,3,4,5,6,7,8}a. {6}b. {5}c. {}d. none of theseI have answered B. {5} am I correct?
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03/17/22

Problem Statement: (Write the problem in your own words with enough detail that an absent classmate could understand the problem.)
A farmer is taking her eggs to market in her cart. Along the way, she hits a pothole, which jars her cart and spills the eggs. Though the farmer is unhurt, every single egg is broken. She goes to... more
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03/17/22

Please help!! I cant find the domains

For each pair of functions, find  and  . Determine the domain of  and the domain of . Show your work.1.  and 2.  and 3.  and 4.  and 5.  and 
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03/17/22

Please help!! I cant find the domains

For each pair of functions, find  and  . Determine the domain of  and the domain of . Show your work.1.  and 2.  and 3.  and 4.  and 5.  and 
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03/17/22

Which of the following defines a function on a given domain?

Which of the following defines a function on a given domain?a. f(x) = x/x+3' domain = {1,2, - 3, - 6}b. f(x)= sqrt{x-3}; domain= {3,4,0} c. f(x)- x/1-3√x ; domain = {1,2,3}d. f(x)= sqrt{x-5} ;... more
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Algebra Math

03/17/22

For a certain company, the cost for producing x items is 55x+300 and the revenue for selling x items is 95x−0.5x2.
A) set up an expression for the profit from producing and selling x items. B) find two value of x that will create a profit of 300$C)is it possible for the company to make a profit of $15000
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