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3 years ago

Solve the system using elimination. 5x + 8y = –29 7x – 2y = –67

1 answer:

8 0

7x-2y+-67
multiply both sides of the bottom by 4 and add 5x+8y=-29 
 28x-8y=268

33x=-297
 x=-9 

5(-9) +8y= -29 
-45 +8y =-29 
8y= 16 
y=2

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I cant resolve this equation : 2x = -2x + 8, can you help me please

chubhunter [2.5K]

Answer:

x = 2

Step-by-step explanation:

OK so lets do it together.

2x = -2x + 8

Subtract 8 from both sides

2x - 8 = -2x

Add 2x to both sides

4x - 8 = 0

Add 8 to both sides

4x = 8

Divide each side by 4

x = 2

Check:

4 = -4 + 8

4 = 4

correct

If my answer is incorrect, pls correct me!

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2 years ago

Point K is on line segment JL. Given KL = 6 and JK = 14, determine the length JL.

mestny [16]

JL= 20

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2 years ago

I don’t understand this

kati45 [8]

Answer:

She shouldnt have divided by two

Step-by-step explanation:

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3 years ago

there is a 20% discount with a set of tires in normally sells for $368. How much will be tires cost after the discount?

ICE Princess25 [194]

Same as before, if we take 368 to be the 100%, how much is 20% off that?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
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so, the discount is that much, thus, the discounted price is then 368 - d.

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2 years ago

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nikklg [1K]

Hi again!

The correct answer is option A

See picture below for the details.

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2 years ago