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asambeis [7]
4 years ago
11

Graph -27x+18y=54??????????

Mathematics
1 answer:
Sindrei [870]4 years ago
7 0

Answer:

There should be 3 points that you have.  (0, 3), (2, 6), and (-2, 0)

Step-by-step explanation:

Alright so since everything there is divisible by 9 you can divide each number by 9 to get:

-3x + 2y = 6

Now, to graph this you need to put it in y = mx + b form. So, add the 3x to both sides of the equation.

-3x +2y = 6

+3x            +3x

2y = 3x + 6

Now you would divide 2 on both sides because you need y to be alone, to get:

y = 3/2 x + 3

Now Graphing:

Since 3 is positive that is your y-axis.  So put a dot on + 3 on the y-axis.  That's your (0, 3) point.  

Then 3/2 is your slope.  Slope is rise / run.  So you start at your dot from the y-axis go up 3 (because that's your rise from slope) then you go to the right 2 (therefore, your run) then place a dot there.  This is your (2, 6) point)

Usually you want to do the negative side of that also.  To do that you would once again start at the 3 (y-axis point).  Now you would pretty much make your slope negative.  Starting at 3, you would go down 3 (your rise for slope) then go to the left 2 (your run for slope).  This is your (-2, 0) point.  

Do you understand it?

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5(x + 3) - (9x - 4)
PolarNik [594]

Answer:

\boxed{ \bold{ \huge{ \boxed{  \sf - 4x + 19}}}}

Step-by-step explanation:

\sf{5(x + 3) - (9x - 4)}

Distribute 5 through the parentheses

⇒\sf{5x + 15 - (9x - 4)}

When there is a ( - ) in front of an expression in parentheses, change the sign of each term in the expression. Also, remove the parentheses

⇒\sf{5x + 15 - 9x + 4}

Collect like terms

⇒\sf{5x - 9x + 15 + 4}

⇒\sf{ - 4x + 15 + 4}

Add the numbers : 15 and 4

⇒\sf{ - 4x + 19}

Hope I helped!

Best regards!!

5 0
4 years ago
Evaluate the expression 15 over 3 x - 6, when x = 4.​
sveticcg [70]
5 over 2
Because if x = 4
3x4=12
12-6=6
15 over 6 simplified equal to 5 over 2
8 0
4 years ago
tina has 3 red pens and 2 black pens in the bottom of her book bag.she randomly selects a pin to use then puts it back in her ba
Agata [3.3K]

Answer:

the probability that this girl pulls out a red pen is 3/5 or 60%

Step-by-step explanation:

there are 3 red pens

and 2 black pens.

that means there are 5 pens

so when she reaches down. she can pick up 3 out of the 5 pens

6 0
4 years ago
Multiply eight by four
Nadusha1986 [10]
The answer you are looking for  is 32
5 0
3 years ago
Read 2 more answers
Simplify (5 - p2 - 4q) - ( -2 + q - 3p2) <br> plss hurry!!!!
jonny [76]

Answer:

2p^2−5q+7

Step-by-step explanation:

Let's simplify step-by-step.

5−p2−4q−(−2+q−3p2)

Distribute the Negative Sign:

=5−p2−4q+−1(−2+q−3p2)

=5+−p2+−4q+(−1)(−2)+−1q+−1(−3p2)

=5+−p2+−4q+2+−q+3p2

Combine Like Terms:

=5+−p2+−4q+2+−q+3p2

=(−p2+3p2)+(−4q+−q)+(5+2)

=2p2+−5q+7

Answer:

=2p^2−5q+7

5 0
4 years ago
Read 2 more answers
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