MATHEMATICS MIDDLE SCHOOL

-4x-2y=-12 4x+8y=-24

Answers

Answer 1

Answer:

Answer:

$x=6\n \ny=-6$

Step-by-step explanation:

Given the system of two equations:

$\left\{\begin{array}{l}-4x-2y=-12\n \n4x+8y=-24\end{array}\right.$

Add these two equations (left side add to left side and right side add to right side):

$-4x-2y+4x+8y=-12+(-24)\n \n-2y+8y=-12-24\n \n6y=-36\n \ny=-6$

Substitute $y=-6$ into the first equation:

$-4x-2\cdot (-6)=-12\n \n-4x+12=-12\n \n-4x=-12-12\n \n-4x=-24\n \nx=6$

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What digit can be in the ones place of a number that has 5as a factor

Answers

0 or 5 because since 5 is the factor, you're going to be counting by fives. Each number that goes up by 5 has a 0 or a 5 as the ones place digit. 5, 10, 15, 20, 25, etc.

25 or 5- your question is not very clear

What can you conclude about two right triangles whose hypotenuses are formed by the same line?

Answers

they are isosceles
i hope helped if didn't I'm am sorry.

What I 18 divided by 200 =

Answers

it is 0.09 i hope i has helped you!!!!!!!!!!!!!!!!!!!!!

the answer is 0.09.
hope it help you.

What system of inequalities is graphed below?

Answers

Answer:

Equations are y > x² - 4 and y < x² + 6.

Step-by-step explanation:

Given : Graph with two parabola.

To find : What system of inequalities is graphed below.

Solution : We have given graph

We can see from the given graph both are dotted line that mean it does not have equal sign .

We can see graph with vertex ( 0 , -4 ) are shaded up ( grater than sign ) that mean equation would be

y > x² - 4.

For upper parabola vertex is ( 0 , 6) and shaded down( less than sign) that mean equation

y < x² + 6.

Therefore,Equations are y > x² - 4 and y < x² + 6.

$y\geq x^2-4-blue\n\ny < x^2+6-red\n\nAnswer:\text{I think is D.}\ny\geq x^2-4\ny < x^2+6$

Dependent variable and independent variable

Answers

The independent variable is the number you put into a function.
The function has no control or influence on it. It's whatever YOU
decided to put in. It's completely independent of the function.

The value that results from what you put in is the dependent variable.
It depends on => what you put in, and => what the function does
with that.

The new pencil was 19 centimeters long. How many millimeters long was the pencil?

Answers

the pencil was 190 millimeters long cuz 1cm=10mm 2cm=20cm 3cm=30mm and on and on hope that helps *smiles*

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