Which statement correctly explains how Mari should find a solution to the following system of linear equations using elimination
2 answers:
ANSWER
The correct answer is A.
EXPLANATION
The given systems of equations are
If we multiply the first equation by 7 we get,
If we multiply the
Adding equation (3) and (4) gives,
We can see that f has been eliminated from the equation, and hence we can find g and use it to find f.
However, if we multiply the first equation by 3 and the second equation by 5, and then subtract, none of the variables will be eliminated.
Also, if we multiply the first equation by –7 and the second equation by 2, and then add, neither f nor g will be eliminated.
The same thing applies to multiplying the first equation by –3 and the second equation by 5, and then adding will not eliminate any of the variables.
The correct answer is A.
EXPLANATION
The given systems of equations are
If we multiply the first equation by 7 we get,
If we multiply the
Adding equation (3) and (4) gives,
We can see that f has been eliminated from the equation, and hence we can find g and use it to find f.
However, if we multiply the first equation by 3 and the second equation by 5, and then subtract, none of the variables will be eliminated.
Also, if we multiply the first equation by –7 and the second equation by 2, and then add, neither f nor g will be eliminated.
The same thing applies to multiplying the first equation by –3 and the second equation by 5, and then adding will not eliminate any of the variables.
You might be interested in
Unit conversion is a way of converting some common units into another. Kari cannot afford to see Genoa, because it would put her $84. 48 over budget.
<h3>What are Units conversions?</h3>Unit conversion is a way of converting some common units into another without changing their real value. for, example, 1 centimetre is equal to 10 mm, though the real measurement is still the same the units and numerical values have been changed.
The cost of the Kari visiting the Vatican, Rome, Naples, Venice, and Milan are €68.77, €95.41, €71.06, €113.38, and €49.69. Therefore, the total cost of visiting these places would be,
Total Cost = €68.77 + €95.41 + €71.06 + €113.38 + €49.69
= €398.31
Now, as it is given that 1$ is equal to 0.6859€, therefore, if we convert the amount that is already spent by Kari to visit these places in dollars, we will get,
The amount that is left with Kari,
Also, the cost of visiting Genoa is €60.85, now, if the cost is converted to dollars we will get the cost to visit Genoa,
Thus, the cost of visiting Genoa is $88.72, while the amount of budget that is left with Kari is $4.28, therefore, Kari cannot afford to see Genoa, because it would put her $84. 48 over budget.
Learn more about Units conversion: