2 years ago

Find the solution of the system of equations. 6x -y= 21. -5x + y= -18

Mathematics

1 answer:

Lapatulllka [165]2 years ago

7 0

First one is -6 and the second one is -3

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2 years ago

Y varies directly with X and has a constant rate of change of 6. When the value of Y is 11, then the value of X could be _____.

Bogdan [553]

Answer: The correct option is (B) less than 2.

Step-by-step explanation: Given that Y varies directly with X and has a constant rate of change of 6.

We are to find the possible value of X when the value of Y is 11.

Since Y varies directly with X, so we can write

$Y\propto X\\\\\Rightarrow Y=kx~~~~~~~~~~~~~~~(i),~~~~~~~~~\textup{[where 'k' is the constant of variation]}$

Since the rate of change is constant and is equal to 6, so we must have

$k=6.$

So, from equation (i), we have

$Y=kX\\\\\Rightarrow Y=6X~~~~~~~~~~~~~~~~~~~~~~(ii)$

Now, when Y = 11, then from equation (ii), we get

$Y=6X\\\\\Rightarrow 11=6X\\\\\Rightarrow X=\dfrac{11}{6}$

Thus, the value of X is less than 2 when Y = 11.

Option (B) is CORRECT.

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3 years ago

. (02.07) A particular plant root grows 3.5 inches per month. How many centimeters is the plant root growing per month? (1 inch

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9 + 7b - 666 +268 The polynomial in standard form

iVinArrow [24]

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Step-by-step explanation:

This is the polynomial in standard form. Hope this helps!

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2 years ago

Find the solution of the system of equations. 6x -y= 21. -5x + y= -18​

Find the solution of the system of equations. 6x -y= 21. -5x + y= -18