301 Answered Questions for the topic College Math

9d

#### Solving Systems of Equations with Row Operations

x + y + z = 3 3x - y - 2z = -4 3x + 4y + 3z = 11

20d

#### Systems of Equations/Matrices

Solve each of the following systems of equations. If the system has a unique solution (one solution), state this and exhibit the solution. If the system is inconsistent (has no solutions) state...
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05/30/20

#### Statistics Question Data from the National Association of Realtors

Data from the National Association of Realtors indicates that the mean price of a home in Denver, Colorado, during April through June of 2012 was 260.7 thousand dollars. A random sample of 50 homes...
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05/30/20

#### Statistics question Hypothesis tests for Proportions

A telecommunications company provided its cable TV subscribers with free access to a new sports channel for a period of one month. If then chose a sample of 400 television viewers and asked them...
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College Math

05/20/20

#### How can I put TOMORROW into numbers?

05/17/20

#### PLEASE HELP ME SOLVE THIS QUESTION

Suppose that f : [0, 3] → R is continuous on [0, 3], differentiable on (0, 3) and f(0) = 0, f(1) = 1, f(3) = 1.
Show that there exists c1 ∈ (0, 3) such that f'(c1) = 1.
Show that there exists c2 ∈...
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College Math

05/01/20

#### A chef is going to use a mixture of two brands of Italian dressing.

A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 9% vinegar, and the second brand contains 14% vinegar. The chef wants to make 340 millilitres of a...
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#### Calculus question

The integral a=-5, b=5, ∫√(25−x^2)dx gives the area of a region R in the xy−plane.a) Identify and sketch the region R.b) Find the area of R using a known geometric formula, not by evaluating...
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#### Calculus Question help

A particle moves along a line with velocity v(t) = cos(6πt) for 0 ≤ t ≤ 4.a) Find the displacement.b) Find the distance traveled

04/21/20

#### Two Population Means

At a recent faculty meeting, we were wondering if freshmen have more free time than seniors. We took a sample of 25 freshmen and 23 seniors. Each student was asked to record the amount of free time...
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#### Equation of Hyperbola — Help!!

Hi! please help me!Question:A light on a wall produces a shadow in the shape of a hyperbola. If the distance between the two vertices of the hyperbola is 10 inches and the distance between the two...
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02/26/20

#### Estimate amount of money needed for a 15% tip

Here is the question: Suppose that you want to leave your server a 15% tip on the dinner bill. The total bill amounts to $24.19. Estimate the amount of money that you should leave for a 25% tip....
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02/26/20

#### School board 8% salary cut (basic Algebra college math)

Here is the question: A school board announces an across the board salary cut 8%. The superintendent makes $193,780 after the cut has been mad. What was her salary before the 8% cut?

02/23/20

#### Supremum and infimum

X1 = { x | x = 0 or x = (1/n) ; n € N(N - set of natural numbers)Find the supremum and infimum(if they exists ) of set X1

02/21/20

#### EXPECTED VALUE GAMBLING WHEEL QUESTION

Suppose you bet $1 on red at the roulette wheel. There are 18 red numbers and 20 nonred numbers (including the green 0 and 00). You win $1 if a red number comes up, and you lose $1 if any other...
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12/09/19

#### Precalculus word problem

An arch going into an alley is in the shape of a downward opening parabola. The base of the arch is 10 ft. wide, and the arch is 15 ft. high at its center. How wide is the arch 10 ft. up?

#### What will Joyce pay at the end of the quarter to her employees?

Joyce Meadows pays her 3 employees $625, $475, and $900 each per week. Calculate what Joyce will pay at the end of the first quarter for (A) state unemployment tax and (B) federal unemployment tax....
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11/01/19

#### Please Help: Linear Algebra Question (linear transformations)

If T is a linear transformation such thatT([3, 2])=[21, 5, -2] and T([4, -1])=[28, -8, 1]Then the matrix A that induces T is:*I'm confused on how to even approach this problem*Thank you

10/28/19

#### Help Me Pleaseeeeeee

How many even 4-digit numbers can be formed from the digits 4, 5, 6, 7, and 9 with no repetitions allowed? (Hint: Try filling the units place first.)
A red six-sided die and a green six-sided...
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10/09/19

#### Precalculus word problem

A rectangular piece of cardboard measuring 12 inches by 18 inches is to be made into a box w/ an open top by cutting equal-sized squares from each corner and folding up the sides. Let x represent...
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10/09/19

#### Given some zeros of a polynomial function find all zeros of the function

P(x) = 2x^4 - x^3 - 27x^2 + 16x - 80, with zeros: 4, -4

#### For all real numbers w and z, such that the product of w and 7 is z, which of the following expressions can represent the sum of w and 7 in terms of z?

For all real numbers and , such that the product of and is , which of the following expressions can represent the sum of and in terms of ?

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