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iVinArrow [24]
3 years ago
14

Simutaneous equation by substitution:y+2x=0,4x+y=3..................solve for x and y

Mathematics
1 answer:
Lunna [17]3 years ago
4 0
1y + 2x = 0 ⇒ -2x - 1y = 0
4x + 1y = 3 ⇒  <u>4x + 1y = 3</u>
                                <u>2x</u> = <u>3</u>
                                 2     2
                                  x = 1.5
                     4(1.5) + y = 3
                            6 + y = 3
                         <u>- 6        - 6</u>
                                  y = -3
                            (x, y) = (1.5, -3)
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Unit conversion is a way of converting some common units into another without changing their real value. The amount that is paid by the family in mortgage per month is equal to $1200.

<h3>What is Units conversion?</h3>

Unit conversion is a way of converting some common units into another without changing their real value. for, example, 1 centimetre is equal to 10 mm, though the real measurement is still the same the units and numerical values have been changed.

As it is given to us that the family uses 12,986.64 Swiss francs per year to pay a mortgage. Therefore, the amount that is paid by the family in mortgage per month can be written as,

\text{Mortgage for a month} = \dfrac{\text{Mortgage of the family for a complete year}}{\text{Number of Months}}\\\\\\\text{Mortgage for a month} = \dfrac{\rm 12,986.64\ Swiss\ francs}{12} = 1082.22\rm \ Swiss\ francs

Thus, the family needs to pay 1082.22 swiss francs every month in the mortgage.

Now, it is mentioned in the problem that 1 Swiss franc = 1.11 US dollars, therefore, 1082.22 swiss francs when converted to US dollars will be equal to,

\rm 1\ Swiss\ francs = \$1.11 \\\\1082.22\ Swiss\ francs = 1082.22 \times 1.11 = \$1,201.26 \approx \$1,200

Hence, the amount that is paid by the family in mortgage per month is equal to $1200.

Learn more about Units conversion:

brainly.com/question/4736731

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