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agasfer [191]
3 years ago
10

ANSWER PLEASE

Mathematics
1 answer:
evablogger [386]3 years ago
4 0

Answer

8

Step-by-step explanation:

160 divided by 8 = 20

100 divided by 8 = 20

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Write a function that solves the matrix equation Ax = b using Gaussian Elimination (book section 6.2). Your function should acce
Luba_88 [7]

Answer:

See explaination

Step-by-step explanation:

public class GaussElim{

private static final double eps = 1e-10; % set epsilon value

public static doublic[] fun(double[][] A,double[] b){

int n=b.length; %calculate length of vector b.

for( int j=0;j<n;j++){

int max=j; %find and swap pivot row.

for (int i=j+1;i<n;i++){

if(Math.abs(A[i][j])>Math.abs(A[max][j])){

max=i;

}

}

double[] t1= A[j]; %swap

A[j]=A[max];

A[max]=t1;

double t= b[j]; %swap

b[j]=b[max];

b[max]=t;

if(Math.abs(A[j][j])<=eps){

throw new ArithmeticException("Matrix is singular."); % if matrix A is a singular matrix then throw error.

}

for(int i=j+1;i<n;i++){

double alpha= A[i][j]/A[j][j];

b[i]=b[i]-alpha*b[j];

for(int k=j;k<n;k++){

A[i][k]=A[i][k]-alpha*A[j][k];

}

}

}

double[] x=new double[n]; % back substitution starts here

for(int i=n-1;i>=0;i--){

double sum=0.0;

for(int j=i+1;j<n;j++){

sum=sum+A[i][j]*x[j];

}

x[i]=(b[i]-sum)/A[i][i];

}

return x;

}

public static void main(String[] args){

int n=3;

double[][] A={{1,2,1},{4,2,0},{-1,5,-3}};

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5 0
3 years ago
Red drum, sciaenops ocellatus, is a game fish found in the Atlantic Ocean and in the Gulf of Mexico. A reasonable estimate of th
Pani-rosa [81]

Answer:

0.1513

Step-by-step explanation:

mean= 15.4

SD=4.5

P(20<X<28)

P((20-15.4)/4.5  < Z < (28-15.4)/4.5)

P(1.022 < Z< 2.8 )

From Z distribution table,

P(Z<2.8)= 0.99744

P(Z<1.022)= 0.84614

P(1.022 < Z< 2.8 )= P(Z<2.8)- P(Z<1.022)

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8 0
3 years ago
Tiffany buys a basket of watermelons on sale for \$9$9dollar sign, 9 before tax. The sales tax is 9\%9%9, percent.
Gnoma [55]

Answer:

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Step-by-step explanation:

<u>Percentages</u>

To increase a certain amount by a given percentage, we can first calculate the increasing amount and then add it to the original amount.

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Now we add it to $9 to get the total price paid by Tiffany:

Total price = $9 + $0.81 = $9.81

Tiffany pays a total price of $9.81 for the basket of watermelons

3 0
2 years ago
There are two rectangles Jared is examining. He knows the width of the first rectangle measures
egoroff_w [7]

1st rectangle:

width: 2.48cm

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area: 9.92

length: 9.92/4.96 = 2

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2 years ago
What is the best description of the data in the histogram
Bingel [31]
A-the data set is symmetrical
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