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2 years ago

What is the best first step for solving the given system using substitution while avoiding fractions -9x+4y=10 -9x+3y=3

Mathematics

2 answers:

Varvara68 [4.7K]2 years ago

8 0

Answer:

Solve for x in the second equation.

Step-by-step explanation:

took the test on edg

mylen [45]2 years ago

3 0

Answer:

The best first step for solving the given system using substitution is substitute the value of -9x from equation 1 in equation 2

Step-by-step explanation:

Given : $-9x+4y=10$

$-9x+3y=3$

To Find: What is the best first step for solving the given system using substitution?

Solution:

$-9x+4y=10$ --1

$-9x+3y=3$ --2

Since we are supposed to solve these equations using substitution method

So, the first best step for solving the equation is :

Both the equations contains -9x

So, substitute the value of -9x from equation 1 in equation 2

$10-4y+3y=3$

$10-y=3$

$y=7$

Substitute the value of y in 1 to get value of x

So, $-9x+4(7)=10$

$-9x+28=10$

$9x=18$

$x=2$

Thus the solution is (2,7)

Hence the best first step for solving the given system using substitution is substitute the value of -9x from equation 1 in equation 2

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Answer:

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And replacing we got:

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Step-by-step explanation:

For this case we have the following function:

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If we compare this function with the general expression of a quadratic formula given by:

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We see that:

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2 years ago

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vampirchik [111]

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3 years ago

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Answer:

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Consider the provided information.

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