1,954 Answered Questions for the topic linear algebra

Linear Algebra Math Calculus Statistics

11/27/22

If you roll a die 100 times, what is the approximate probability that you will roll between 9 and 17 ones, inclusive? (Round your answer to two decimal places.)
You may need to use the appropriate appendix table or technology to answer this question.If you roll a die 100 times, what is the approximate probability that you will roll... more
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Linear Algebra Math

11/27/22

A triangle is defined by the points A(8,−5,3), B(1,−1,8), and C(−10,k,4). The area of the triangle is √(2116.25) Determine the value of k.
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Linear Algebra Algebra 1 Algebra 2 Prealgebra

11/27/22

MathXL question

Ms. Smith invested ​$36,000 in two​ accounts, one yielding 7​% interest and the other yielding 8​%. If she received a total of​ $2,720 in interest at the end of the​ year, how much did she invest... more
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Linear Algebra

11/24/22

Linearly Independent Sets; Bases
Please tell me how to solve below questionConsider the vectors u→= [-3, 10, 7], v→= [10, -6, 9], and w→= [38/3, -24, k].What value of k will make the set {→u,→v,→w} linearly dependent?You may... more
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Linear Algebra Algebra 2

11/22/22

I NEED THIS ANSWERED AS SOON AS POSSIBLE! THANK YOU!
Years after 1990 U.S. population (in millions) 1990: x=0 248.8 2000: x=10 281.4 2010: x=20 308.7 2020: x=30 331.4 2021: x=31 331.9 B) Use your graphing calculator’s linear regression... more
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Linear Algebra Math Test Preparation Calculus

11/21/22

Find the local maxima and minima of a function.
The question states: "You are given the function f(x) = e^x(x+3). Find the local minima and maxima."The concept baffles me, and any explanation alongside the solution would be great.My rule... more
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Linear Algebra Math

11/21/22

Can someone please help me?! I keep trying to solve it but I keep getting the wrong answer
Ok so, I've been trying to solve this math problem for over 30 minutes. I had this math problem last week and I skipped it. I asked on here but no one answered. I thought that if I came back to it... more
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Linear Algebra Math Algebra 1 Algebra 2

11/20/22

The count in a bacteria culture was 500 after 15 minutes and 1700 after 40 minutes. Assuming the count grows exponentially,
The count in a bacteria culture was 500 after 15 minutes and 1700 after 40 minutes. Assuming the count grows exponentially,What was the initial size of the culture? ncorrect  Find the doubling... more
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Linear Algebra

11/18/22

A math test is worth 100 points and has 38 problems. Each problem is worth either 5 points or 2 points. How many problems of each point value are on the test?
algebra
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Linear Algebra

11/17/22

The length of a rectangle is 5 yd longer than its width. If the perimeter of the rectangle is 70 yd , find its length and width.
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Linear Algebra

11/16/22

calculate the correlation coefficient (to three decimal places)
Based on the data shown below, calculate the correlation coefficient (to three decimal places) xy 3 79.2 4 82.2 5 78.4 6 80.4 7 79.2 8 88 9 88.4 10 88.2 11 88.2 r=
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Linear Algebra

11/16/22

whats the linear regression equation?
Use your graphing calculator to find the line of best fit for the given data.Use the indicated variables and proper function notation in your answer.Round to 3 decimal places as... more
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Linear Algebra Math

11/16/22

Find the equation of the line 𝓵 if you know
a). 𝓵 passes across the intersection point of the lines s1 and s2 determined by the equations x = -5 + x + y and -x + 3y + 1 = -2x + 3y, respectively.b). 𝓵 is parallel to the line 𝓻 determined by... more
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Linear Algebra Math

11/16/22

Find the equation of the line 𝓵 if you know
a). 𝓵 passes across the intersection point of the lines s1 and s2 determined by the equations 2x = -1 + 3x + y and -2x + y + 9= -x + y, respectively.b). 𝓵 is perpendicular to the line 𝓻 determined... more
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11/15/22

Linear Approximation estimate
Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.02 cm thick to a hemispherical dome with a diameter of 40 meters.I don't understand... more
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Linear Algebra

11/15/22

How long will it take for $2100 to grow to $42,600 at an interest rate of 3.2% if the interest is compounded quarterly? Round the number of years to the nearest hundredth.
How long will it take for $2100 to grow to $42,600 at an interest rate of 3.2% if the interest is compounded quarterly? Round the number of years to the nearest hundredth.
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Linear Algebra

11/13/22

Let W₁ be the set: [1 0 0], [1 1 0], [1 1 1] and Let W₂ be the set: [1 0 1], [0 0 0], [0 1 0]
Determine if W₁ is a basis for R³ and check the correct answer(s) below.A. W₁ is a basis.B. W₁ is not a basis because it does not span R³.C. W₁ is not a basis because it is linearly... more
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Linear Algebra Math Algebra 1 Algebra 2

11/11/22

Using laws of logarithms, write the expression below as a single logarithm 6(log(x+2)+⁷⁄₆log(x+1))= log(________________)
(help)
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11/11/22

Which of these log rules are true and which are false? Im having trouble with the 1/2 and radicals.

  ?    True    False     1. ln(A)ln(B)=ln(A)+ln(B)  ?    True    False     2. (log(A))/(log(B))=log(A)−log(B)log⁡(A)log⁡(B)=log⁡(A)−log⁡(B)  ?    True    False     3. √ln(A)=ln(A(1/2))ln⁡(A)=ln⁡(A^... more
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Linear Algebra Elementary Math

11/09/22

System of equations
2. How many ounces of a 10% acid solution should be mixed with a 50% acid solution to get 120 ounces of a 20% acid solution. Write the system of equations that would be used to solve this.Be sure... more
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Linear Algebra Math

11/09/22

Write a linear equation for the attendance in terms of the price, p. (A=mp+b)
A local theme park found that if the price of admission was $17, the attendance was about 1100 customers per day. When the price of admission was dropped to $10, attendance increased to about 2250... more
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Linear Algebra

11/09/22

Using simple linear regression, what is the forecast for week 22?
You have been given the demand data for the past 10 weeks for swim rings for children. You decide to run three different types of forecasting methods on the data to see which gives you best... more
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Linear Algebra

11/09/22

Parallel lines.

Find the equation of the line parallel to the line y=3x-2 and passes through the point (1,5)
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11/08/22

Differential Equations- find the general solution(linear equation of order n)
1. (D3 − 3D2 − 10D) y = 02. (D3 − 3D2 − 4D − 12) y = 03. d3x/dt3+d2x/dt2-2dx/dt = 04. d3x/dt2-19dx/dt+30 = 05. (4D3 − 21D − 10 ) y = 0 6. (D3 − 14D + 8) y= 0 7. (D3 − D2 − 4D− 2) y = 0 8. (4D4 −... more
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Linear Algebra

11/07/22

Tough Question on hw
A chemist has three different acid solutions. The first acid solution contains 20%20% acid, the second contains 30%30% and the third contains 75%75%. They want to use all three solutions to obtain... more
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