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Olegator [25]
3 years ago
10

To eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied by before ad

ding the equations together?
First Equation: 5x − 4y = 28

Second equation: 3x - 9y = 30

The first equation should be multiplied by 3 and the second equation by 5.
The first equation should be multiplied by 3 and the second equation by −5.
The first equation should be multiplied by 9 and the second equation by 4.
The first equation should be multiplied by 9 and the second equation by −4
Mathematics
1 answer:
Kryger [21]3 years ago
7 0

Answer:

The first equation should be multiplied by 9 and the second equation by −4

Step-by-step explanation:

Given the simultaneous equation

First Equation: 5x − 4y = 28

Second equation: 3x - 9y = 30

In order to eliminate y, we must make the coefficient of x in both expression to be equal.

To do that the first equation should be multiplied by 9 (negative value of the coefficient of y in equation 2)and the second equation by -4( (coefficient of y in equation 1)

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If x=-1 and y= -2, then which of the following statements are true?
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Answer:

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Step-by-step explanation:

because if we solve the equation we need to do x_y = -1-2

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6 0
3 years ago
Adam would use the following steps to round 11.3524 to the nearest tenth 11.3524-11.352-11.35-11.4 is adam's method a valid way
noname [10]

Answer:

Adam's way is correct

Step-by-step explanation:

11.3524 can easily be rounded to the nearest tenth because the number 4 cannot be rounded up. Any number below 4 cannot be rounded up and anything above five can be rounded up and that us why 5 rounded up transforms the 3 to a 4.

Hope this helped.

6 0
3 years ago
what is the constant of variation for the quadratic variation of x |2|3|4|5|6| fx |28|63|112|175|252|
hjlf
F(x) = k*x^2
You can find k using only the first point.
28 = k*2^2
7 = k

The constant of variation is 7.
8 0
3 years ago
Kyle is constructing a bar graph to display the percentage of students enrolled in AP courses from 1996-2005. He is planning to
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The answer to the question is C.
4 0
3 years ago
Help?? I could really use it
Lynna [10]

Answer:

16.5 m

Step-by-step explanation:

The triangle shown in the figure is a right triangle, so we can use the Pythagoreas Theorem.

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a² = 272

a = √272

a = 16.5

Answer: 16.5 m

4 0
3 years ago
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