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Juli2301 [7.4K]
4 years ago
15

What is the solution to the system of equations?

Mathematics
1 answer:
Lemur [1.5K]4 years ago
4 0
I would plug in each of the solutions to every equation and see which one works. This is probably easier than solving for x, y, and z. But let me know if you would like me to run through the steps!

First choice: using the first equation, -3(-3)-4(4)+6=-19 not -1 as listed. False.

Second choice: using the first equation, -3(4)-4(-3)+(-1)=-1 ; using the second equation, 2(4)+(-3)-(-1)=6 not -8 as listed. False.

Third choice: using the first equation, -3(-3)-4(4)+8=-17 not -1 as listed. False.

Fourth choice: using the first equation, -3(3)-4(-4)+-(-6)=-1 ; using the second equation,
2(3)+(-4)-(-6)=8 ; using the third equation, 3+8(-4)-(-6)=23

So the answer should be the fourth choice. Hope this helps! :)




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Maria’s dinner bill is 22.88 after tax is she wants to leave a 20% tip what will the total cost of the dinner be .
Rainbow [258]

Answer:

$27.45

Step-by-step explanation:

hope this helps!

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6 0
3 years ago
HELP PLESSE ITS MULTIPLE CHOICE
Andrew [12]

Answer:

<h2><u><em>Letter A</em></u></h2>

Step-by-step explanation:

First of all, we have to solve all the equations

First one is (4*1)-6

<em>We have to use PEMDAS</em>

<em>which stands for </em>

<em>Parenthesis</em>

<em>Exponents</em>

<em>Multiplication</em>

<em>Divison</em>

<em>Addition</em>

<em>Subtraction</em>

In (4*1)-6  

You have to do 4*1 first ~ which equals 4

the next step would be 4-6  ~  which equals -2

The next equation would be (1*4)-6

First do 1*4  ~ which is 4

Next 4-6  ~ which again equals -2

Next equation is (1*6)-(4-6)

Parenthesis first, 1*6=6

4-6=-2

6-(-2)

which equals 8

Our next equation is 6-(1*4)

1*4=4

6-4~ which equals 2

Our last equation is 4*(1-6)

Parenthesis comes first, so it would be 1-6 first

which equals -5

4*(-5) would be our final step  ~  which equals -20

All of our answers would be

-2 - from the top equation

-2 - from letter A

8 - from letter B

2 - from letter C

-20 - from letter D

which means <u><em>Letter A</em></u> is the answer.

Hope this is helpful.

5 0
3 years ago
9) Two ships follow the parallel paths shown on the map.
Monica [59]

Answer:

The nautical mile is based on the Earth's longitude and latitude coordinates, with one nautical mile equaling one minute of latitude.

Step-by-step explanation:

3 0
2 years ago
When Elijah left his house in the morning, his cell phone battery was partially
lions [1.4K]

Answer:

The slope is -4.5

The slope means that Elijah's phone battery will decrease by 4.5 percent each hour.

Step-by-step explanation:

In the equation y = mx + b, m is the slope.

The coefficient in the equation B = 27 – 4.5t is -4.5. This means that -4.5 is the slope of the equation.

In the context of this problem, the slope will represent the percent that Elijah's phone battery will decrease per hour.

So, the slope means that Elijah's phone battery will decrease by 4.5 percent each hour.

8 0
3 years ago
A rectangular vegetable patch is 93 feet long and 37 feet wide. What is its area?
stealth61 [152]

Answer:

A= 3441

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Step-by-step explanation:

Area = l x w

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Perimeter = 2l + 2w

2(93) + 2(37) = 260

5 0
4 years ago
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