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2 years ago

Which system has the same situation below?

Mathematics

1 answer:

Likurg_2 [28]2 years ago

7 0

Answer:

Step-by-step explanation:

Let's solve the given system of equations.

Given system

x +3y= 10 ----(1)

-2x -2y= 4 ----(2)

From (2):

-2(x +y)= 4

Dividing both sides by -2:

x +y= -2 ----(2)

Thus, options 3 and 4 are incorrect as x +y≠ -2.

(1) -(2):

(x +3y) -(x +y)= 10 -(-2)

Expand:

x +3y -x -y= 10 +2

2y= 12

Divide both sides by 2:

y= 12 ÷2

y= 6

Substitute y= 6 into (2):

x +6= -2

x= -6 -2

x= -8

Options (1) and (2) differs only by the value of the expression of -x +y. Thus, let's find its value in the given system of equations.

-x +y

= -(-8) +6

= 8 +6

= 14

Thus, option 2 is the correct option.

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QUICK ALGEBRA 2 HELP PLEASE. NEEDED ASAP! 3 Q'S!

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1. x -    4
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The answer is C.

2. A. 9x² + 12x - 3
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B. 9x² + 3x - 5
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D. 6x² + 7x - 6
Not Factored

The answer is C.

3. 3x³ - 4x² + 3x - 6
x + 2|3x⁴ + 2x³ - 5x² + 0x - 4
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The answer is A.

7 0

2 years ago

Lyla took a total of 16 quizzes over the course of 4 weeks. After attending 8 weeks of school this quarter, how many quizzes wil

just olya [345]

32 quizzes. If you make a proportion of quiz/weeks it would be 16/4 = x/8. Multiply by 2.

3 0

2 years ago

A ball is dropped from a certain height. The function below represents the height f(n), in feet, to which the ball bounces at th

fredd [130]

Answer:

Initial height or what the ball was originally bounced from a height of 9 feet

Step-by-step explanation:

9 represents the height that the ball was originally bounced from.

If you plug in 0 for $n$ into $f(n)=9(0.7)^n$ , you get:

$f(0)=9(0.7)^0=9(1)=9$ .

9 feet is the initial height since that is what happens at time zero.

7 0

3 years ago

What is an equation of the line that passes through the points (-6, 2)and (−6,6)?

monitta

Answer:

x=-6

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(6-2)/(-6-(-6))

m=4/(-6+6)

m=4/0

undefined

x=-6

4 0

1 year ago

Solve for x -3(x + 4) - 2 = -2(x - 5) x= -4 x = -11/5 x = 24 x = -24

Gala2k [10]

Answer:

-24

Step-by-step explanation:

-3 (x + 4) - 2 = -2 (x - 5)

-3x - 12 - 2 = -2x + 10

-3x + 2x = 10 + 12 + 2

-x = 24

x = -24

5 0

3 years ago