MATHEMATICS MIDDLE SCHOOL

Which ordered pair is the solution to the system of equations?-5x-3y=12
1x-3y=-6
A.
(3, −3)

B.
(−3, 1)

C.
(6, 4)

D.
(9, 5)
need help

Answers

Answer 1
Answer: B.
(−3, 1)
1*-3-3*1=-6 - True
Solve:
-5*-3-3*1=12 -True
Solve for bottom:
Answer 2
Answer: your to this is answer is b.

-5*-3=+15
-3*1=-3
15-3=12

1*-3=-3
-3*1=-3
-3-3=-6

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What is the slope and the y-intercept of each equation(1) 12x + 3y = 9(2) 6x - 2y =2(3) 2x + 5y = 10(4) 9x - 3y = -1(5) 4y + 6x =2(6) 8y -2x = 5(7) 5x + 5y = 3(8) -4y = 16(9) 6x = 12

The area of a soccer field is 7,700 yd2. The width of the field is 70 yd. What is the perimeter of the field?

Answers

Answer:

Perimeter = 360yd

Step-by-step explanation:

Soccer field is rectangular in shape

Area of a rectangle = length x width

Area= 7700yd

Width = 70yd

Therefore

Let y represent length

7700 = y x 70

y = 7700/70

y = 110

Length = 110yd

Perimeter of a rectangle = 2(L + W)

Perimeter = 2(110 + 70)

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Perimeter = 360yd
it would be 110 + 110 + 70 +70 which equals 360

Determine the domain and range of the function F(x)=(x-3) {exponent of 2 behind the parentheses}

Answers

That's a parabola. Inside the parenthesis the x-3 affects the placement on the x axis. since is subtracting you move the vertex 3 to the right(because its backwards like that) There is no limit to the x, as it will slowly mom out forever even when its so steep that in reality you dont care, so domain is infinite or all real numbers. the parabola is positive so it moves up forever, but it never goes below its vertex on the x axis. 
Domain=all real numbers
Range= all real numbers>or = 0

On the school playground, the slide is due west of the tire swing and due south of the monkey bars. If the distance between the slide and the tire swing is 9 meters and the distance between the tire swing and the monkey bars is 15 meters, how far is the slide from the monkey bars?

Answers

It would be 12 meters :)
Explanation: You woulde use Pythagorus theorum which is a2 + b2 = c2 because the slide, tire swing and monkey bard create a triangle.

15x15 = 225
9x9 = 81
225-81 = 144
Square root of 144 = 12 meters

What is 3/5 of 6,000

Answers

we have to find what is 3/5 of 6000 
so basically of means in mathematically multiply.. ( of = multiply )
So now let's solve the problem 
(3)/(5) of 6000
i.e (3)/(5) * 6000
 = 3 * 1200
 = 3600

So your correct answer is 3600

Hope this helped you :)
for this question the only thing you should do is to multiply 3/5 by 6000 so you will have:
3/5 * 6000 = 3,600 :)))
i hope this is helpful
have a nice day 

Use the gcf of 60 and 100 to reduce 60/100.

Answers

GCF (Greatest Common Factor) of 60 100 = 20
60/100 reduced by 20 = 3/5 (Simplest Form)
the answer would be 3/5 which is the simplest form for the problem

Which of the following describes a one-to-one function?

Answers

Option C) is correct.

Step-by-step explanation:

One to one function can be checked by using horizontal line test and vertical line test.

A) y = \left | x \right |

the graph of this function ia attached below named as Graph 1.

The above function did not pass the horizontal line test therefore it is not a one to one function.

\rm B) \;y = \left\{\begin{matrix}4 & , & x<0\n 5 & , & 0\leq x\leq 2\n 6 & , & x > 2\end{matrix}\right.

the graph of this function is attached below named as Graph 2.

The above function did not pass the vertical line test therefore it is not a one to one function.

\rm C)\;y = \left\{\begin{matrix}5x-1 & , & x<-2\n x-9 & , & x \geq -2\n \end{matrix}\right.

the graph of this function is attached below named as Graph 3.

The above function pass the horizontal line test as well as vertical line test and therefore this function is one to one function.

\rm D)\; y=[[x]]

the graph of this function ia attached below named as Graph 4.

The above function is a floor function and fail the vertical line test.

Therefore, correct answer is option C).

For more information, refer the link given below

brainly.com/question/19537275?referrer=searchResults

check the picture below.


bearing in mind that a one-to-one function must pass the horizontal line test as well as the vertical line test.


now, |x| is the graph of a letter V more or less, and that'd fail the horizontal line test.


the first piecewise function, has say 4 : x < 0, namely for all values before 0, "y" is a steady constant of 4, that will be a horizontal line and will definitely fail the vertical line test.


[[x]] is pretty much the "floor function", and you can do a quick google search on it, or do it in your calculator, it should have a floor function, but that one will definitely fail the vertical line test as well.
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