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3 years ago

Help to solve. B. Present in the form of a fraction.

Mathematics

2 answers:

Studentka2010 [4]3 years ago

8 0

I hope this helps you

Alexandra [31]3 years ago

5 0

I agree that is the correct answer

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What is 85.87 rounded to the nearest whole number?

Wewaii [24]

The answer is D, because you move to the right of the decimal to see if that number is 5 or above. Then you round up, (to 86). :) Hope this was helpful.

4 0

3 years ago

Read 2 more answers

80 points if you answer this question!

Neporo4naja [7]

Total amount of Carbon-14
$= 12 - (0.00012 \times 5000)$
$= 12 - 0.6$
$= 10.4$
=C

Full marks answer

8 0

3 years ago

Read 2 more answers

Hong buys a bag of 11 tangerines for $2.86.

Ghella [55]

Answer:

$0.26

Step-by-step explanation:

To find the unit price, divide the cost by the amount you have.

$2.86/11 = $0.26

The unit price is $0.26.

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3 years ago

It is clear that a large survey is an appropriate method for a study of marriage patterns among college students. What will the

Ulleksa [173]

Answer:

Here the sample is the college students, and the researcher want's to do a survey to obtain information about marriage patterns.

Then, the ideal sample will be constituted of students of both genders, of different ideologies, of different social classes, of different religions, etc.

Then the thing that the researcher needs to do is:

Define the size of the sample

Assign to each student a unique number.

using a random number generator, generate enough different numbers to fill the sample.

Each of these numbers corresponds to a unique student, so now you have a complete sample of random selected students.

This sample can not be biased in any way.

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3 years ago

Use the augmented matrix to determine if the linear system is consistent. Is the linear system represented by the augmented matr

Crazy boy [7]

Answer:

The correct option is (A).

Step-by-step explanation:

If the reduced row echelon form of the coefficient matrix of a linear system of equations in four different variables has a pivot, i.e. 1, in each column, then the reduced row echelon form of the coefficient matrix is say A is an identity matrix, here I₄, since there are 4 variables.

$\left[\begin{array}{cccc}1&0&0&0\\0&1&0&0\\0&0&1&0\\0&0&0&1\end{array}\right]$

Then the corresponding augmented matrix [ A|B] , where the matrix is the representation of the linear system is AX = B, must be:

$\left[\begin{array}{ccccc}1&0&0&0&a\\0&1&0&0&b\\0&0&1&0&c\\0&0&0&1&d\end{array}\right]$

Now the given linear system is consistent as the right most column of the augmented matrix is a linear combination of the columns of A as the reduced row echelon form of A has a pivot in each column.

Thus, the correct option is (A).

8 0

3 years ago