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oksano4ka [1.4K]
2 years ago
15

Two times a number x minus six times another number y is negative six.

Mathematics
1 answer:
Pie2 years ago
7 0

Answer:

2x-6y=6, 2x+5y=18

Step-by-step explanation:

Translating the phrase into an equation, we get:

2x-6y=6

And:

-2x+5y=18

So the system of equations would be:

2x-6y=6, 2x+5y=18

If you want to put it into slope-intercept form, you can simplify both equations:

2x-6y=6\\6y=2x-6\\y=\frac{1}{3}x-3

2x+5y=18\\5y=-2x+18\\y=-\frac{2}{5}x+\frac{18}{5}

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I would rather buy one and get the second 25%off

Step-by-step explanation:

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3 years ago
What is the value of x
goblinko [34]

Answer:

52/3

Step-by-step explanation:

Use basic Thales therom,

\frac{3x}{4x}=\frac{3x+7}{5x-8}\\\\\frac{3}{4}=\frac{3x+7}{5x-8}\\

Cross multiply,

3*(5x-8)=4*(3x+7)

3*5x - 3*8 = 4*3x + 4*7

15x - 24 = 12x +28

Add 24 to both sides

15x = 12x + 28 + 24

15x = 12x + 52

Subtract 12x from both sides

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3 years ago
Can someone tell me how to solve translations please?
Sophie [7]

Step-by-step explanation:

Hey there!

Here; The coordinates are ; H(-4,-2), G(-5,3), F(-2,1)

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Use same formula.

H(-4,-2) -------> P'(3,-2)

G(-5,3)-----------> G'(2,3)

F(-2,1)------------> F'(5,1)

<u>There</u><u>fore</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>Option</u><u> </u><u>C</u><u>.</u>

<u>Hop</u><u>e</u><u> it</u><u> helps</u><u>.</u><u>.</u>

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3 years ago
Please help fr , like i acc need help
xeze [42]

Step-by-step explanation:

first a little help, how they got the equations :

in total they need 15 liters.

so, whatever x and y are, but together they must be 15 L.

x + y = 15

then, we are mixing x liters of 20% alcohol with y liters of 100% alcohol, that have to result in a 40% solution of (x+y) liters :

0.2x + y = 0.4(x+y)

we know from the first equation that x+y = 15, so the second equation is actually

0.2x + y = 0.4 × 15 = 6

so, we have

x + y = 15

0.2x + y = 6

do you notice something ? there is a "+ y" in both equations.

so we can actually subtract the second equation from the first, eliminate y and solve for the remaining x. and then use one of the original equating to get also y :

x + y = 15

- 0.2x + y = 6

---------------------

0.8x 0 = 9

0.8x = 9

x = 9/0.8 = 11.25 liters

x + y = 15

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The means and mean absolute deviations of the individual times of members of two relay swim teams are shown in the table below.
shepuryov [24]
See the attached picture for the solution:

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