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beks73 [17]
4 years ago
11

What is the product of -3 1/4 × -1 1/2​

Mathematics
2 answers:
Dmitry [639]4 years ago
4 0

For this case we must find the product of the following expression:

-3 \frac {1} {4} * - 1 \frac {1} {2} =

So, we have:

(\frac {4 * (3) +1} {4}) * (\frac {2 * (1) +1} {2}) =\\\frac {12 + 1} {4} * \frac {2 + 1} {2} =\\(- \frac {13} {4}) * (- \frac {3} {2}) =

By law of signs of multiplication is fulfilled:

- * - = +\\\frac {13 * 3} {4 * 2} =\\\frac {39} {8}

ANswer:

\frac {39} {8}

OLga [1]4 years ago
4 0

Answer:

4\frac{7}{8}

Step-by-step explanation:

-3\frac{1}{4} \times -1\frac{1}{2} = -\frac{13}{4} \times -\frac{3}{2} = \frac{39}{8} = 4\frac{7}{8}

I am joyous to assist you anytime.

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Arrange the systems of equations that have a single solution in Increasing order of the x-values in their solutions.
NemiM [27]

Complete question is;

Arrange the systems of equations that have a single solution in Increasing order of the x-values in their solutions.

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Answer:

Arranging the systems in increasing value of x gives;

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Step-by-step explanation:

1) 2x + y = 10 - - - (eq 1)

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Multiply eq 1 by 3 to get;

6x + 3y = 30

Add it to eq 2 to get;

7x = 28

x = 28/7

x = 4

2) x + 2y = 5 - - - (eq 1)

2x + y = 4 - - - (eq 2)

Multiply eq 2 by 2 to get;

4x + 2y = 8

Subtract eq 1 from it to get;

3x = 3

x = 3/3

x = 1

3) x + 3y = 5 - - - (eq 1)

6x - y = 11 - - - (eq 2)

Multiply eq 2 by 3 to get;

18x - 3y = 33

Add to eq(1) to get;

19x = 38

x = 38/19

x = 2

4) 2x + y = 10 - - - (eq 1)

-6x - 3y = -2 - - - (eq 2)

Make y the subject in eq 1 to get;

y = 10 - 2x

Put in eq (2);

-6x - 3(10 - 2x) = -2

-6x - 30 + 6x = -2

0 = 0

Thus,no solution exists.

Arranging the systems in increasing value of x gives;

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