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3 years ago

Y=6x+7 3x - 8y = 4 Substitute?

Mathematics

1 answer:

Rudik [331]3 years ago

3 0

Answer:

Y=1, X= -(4/3)

Step-by-step explanation:

Y=6X+7

3X-8Y=4

Substitute Y=6X+7

3X-8Y=4

3X-8(6X+7)=4

3X-48X-56=4

-45X-60=0, therefore 45X=-60=X=-4/3

Sub. X values in Equation

Y=6X+7

=6(-4/3)+7, therefore Y=-1

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3 years ago

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Step-by-step explanation:

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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In the graph shown, at what value of x does the value of y change from increasing to decreasing or decreasing to increasing?

kotykmax [81]

Answer:

Your original answer is corrrect

Step-by-step explanation:

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2 years ago

What is the value of the expression 5x2 + 2x when x = 5?

masha68 [24]

Answer:

135

Step-by-step explanation:

Given:

$x = 5$

To determine a numerical value for the expression, simply substitute the value of "x" into the expression and simplify the expression, if necessary, to determine a specific number for the expression provided.

$\implies 5x^{2} + 2x$

$\implies 5(5)^{2} + 2(5) \longrightarrow \longrightarrow \longrightarrow (x = 5)$

$\implies 5(5)(5) + 2(5)$

$\implies 125 + 10$

$\implies 135$

Therefore, the value of the expression $5x^{2} + 2x$ when x = 5 is 135.

Learn more about this topic: brainly.com/question/27675691

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1 year ago