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larisa86 [58]
3 years ago
5

Given the system of equations presented here:

Mathematics
2 answers:
Bumek [7]3 years ago
8 0

ANSWER

The correct answer is option B

EXPLANATION


The equations are

3x+5y=29---(1)


and


x+4y=16---(2)


When we multiply the second equation by -3, we obtain;


-3x-12y=-48---(3)


When we combine this new equation with equation (1).


-7y=-19


We can see that x has been eliminated from the equation.


We can then, solve for  y and then substitute the result in to any of the equations to find x.


Hence the correct answer is option B



trapecia [35]3 years ago
7 0

<u>Answer:</u>

B) Multiply the second equation by −3 to get −3x − 12y = −48

<u>Step-by-step explanation:</u>

We are given two equations:

3x+5y= 29 --- (i)

x+4y = 16 --- (ii)

If we multiply the second equation by -3, we get:

-3(x+4y) = 16

-3x-12y=-48 --- (iii)

Combining equation (i) and (iii) to get:

3x+5y-3x-12y=29-48

3x and -3x cancel each other so x is eliminated and we are left with:

-7y= -19

Therefore, the correct answer option is B) Multiply the second equation by −3 to get −3x − 12y = −48.

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The t-test statistics is determined by using the formula:

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