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Elza [17]
3 years ago
10

\begin{cases} y = -2x-4 \\\\ y = 3x+3 \end{cases}

Mathematics
1 answer:
Evgen [1.6K]3 years ago
5 0

Answer: x = -1.4; y = -1.2

Step-by-step explanation:

y = -2x - 4

y = 3x + 3

Substitute

3x + 3 = -2x - 4

Add 2x to both sides

5x + 3 = -4

Subtract 3 from both sides

5x = -7

Divide both sides by 5

x = -1.4

y = -2x - 4

Substitute -1.4 for x

y = -2 (-1.4) - 4

y = 2.8 - 4

y = -1.2

Hope this is what you were asking! If so, I hope it helped! :3

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Wilma is twice as old as Jamal, and Jamal is 3 years older than Tim. The sum of all their ages is 17.
oee [108]
<span>If x = Jamal's age , 2x = Wilma's age , x - 3 = Tim's age.
The sum of the ages is 17. 
Jamal's age is 5
Wilma's age is 10
Tim's age is 2

Hope this helps!</span>
4 0
3 years ago
A rectangular garden has a walkway around it. The area of the garden is 4(4.5x+1.5) The combined area of the garden and the walk
Murljashka [212]

The area of the walkway around is 26 x + 16 as the sum of two terms

Step-by-step explanation:

A rectangular garden has a walkway around it

1. The area of the garden is 4(4.5 x + 1.5)

2. The combined area of the garden and the walkway is 5.5(8 x + 4)

We need to find the area of the the walkway

To find the area of the walkway by subtracting the area of the

rectangle from the combined area

∵ The combined area = 5.5(8 x + 4) ⇒ simplify it

∴ The combined area = 5.5(8 x) + 5.5(4)

∴ The combined area = 44 x + 22

∵ The area of the garden = 4(4.5 x + 1.5) ⇒ simplify it

∴ The area of the garden = 4(4.5 x) + 4(1.5)

∴ The area of the garden = 18 x + 6

Now subtract the area of the garden from the combined area

∵ Area of the walkway = (44 x + 22) - (18 x + 6)

∴ Area of the walkway = 44x + 22 - 18 x - 6

- Add like terms

∴ Area of the walkway = (44 x - 18 x) + (22 - 6)

∴ Area of the walkway = 26 x + 16

The area of the walkway around is 26 x + 16 as the sum of two terms

Learn more:

You can learn more about rectangles in brainly.com/question/6594923

#LearnwithBrainly

4 0
4 years ago
A car rental company offers two plans for renting a car. Plan A: $35 per day and $O.25 per mile. Plan B: $55 per day with free u
pochemuha
The answer to the question is B.

55 - 35 = 20 

80 x 0.25 = 20

Therefore, you save money after 80 miles.
8 0
3 years ago
Read 2 more answers
6 times a number is equivalent to 28 less than 2 times the number. What is the number
lianna [129]

Answer:

Step-by-step explanation:

2x+28<=6x

28<=4x

7<=x

5 0
3 years ago
Read 2 more answers
Determine if the following system of equations has no solutions, infinitely many
Vesnalui [34]

Answer:

The system has infinitely many solutions

Step-by-step explanation:

we have

5x+3y=9 ----> equation A

-10x-6y=-18 ----> equation B

Multiply by -2 both sides equation A

-2(5x+3y)=-2(9)

-10x-6y=-18 ----> equation C

Compare equation B and equation C

The equations are identical (is the same line)

therefore

The system has infinitely many solutions

Is a consistent dependent system

7 0
3 years ago
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