3 years ago

Help please I’m stuck

Mathematics

2 answers:

Greeley [361]3 years ago

3 0

Answer:

x=5

here,

=5×5-5

=25-5

=20

Delicious77 [7]3 years ago

3 0

Answer:

0 will be the answer may be not sure

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Solve the system of equations. \begin{aligned} &-9y+4x - 20=0 \\\\ &-7y+16x-80=0 \end{aligned} −9y+4x−20=0 −7y+16x−80=

bekas [8.4K]

Answer:

(5 , 0)

Step-by-step explanation:

7 * (−9y+4x−20)=0

9 * (−7y+16x−80)=0

-63y + 28x -140 = 0 ......a

-63y + 144x -720 = 0 .....b

b-a: 116x - 580 = 0

116x = 580

x = 5

y = (4x-20)/-9 = 0/-9 = 0

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3 years ago

Sara is getting ready for work. She has black pants, blue pants, grey pants, a red shirt, a green shirt, a white shirt, a blue s

Nady [450]

Answer:

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3 years ago

Classify the system of equations 2x + y - 7 = 0 1/3 x + y - 4 = 0

KATRIN_1 [288]

Answer:

Step-by-step explanation:

The equations are:

2x + y - 7 = 0

and

1/3x + y -4 = 0

Let's rearrange the first to get:

y = -2x + 7

Putting this into the 2nd equation we get:

$\frac{1}{3}x + y -4 = 0\\\frac{1}{3}x + (-2x+7) -4 = 0\\\frac{1}{3}x-2x+7-4=0\\\frac{5}{3}x=3\\x=\frac{9}{5}$

Now, y would be:

$y=-2x+7\\y=-2(\frac{9}{5})+7\\y=3\frac{2}{5}$

Solving the equation we see that there is 1 unique solution with 1 x value and another y values. That means, when graphing, the lines would intersect.

Answer choice B is right.

<u>Note:</u> Coincident means the same line and parallel means there would be no solution when solving

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3 years ago