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2 years ago

What is the midpoint of -4 and 20?

Mathematics

2 answers:

baherus [9]2 years ago

7 0

Answer: 8

Step-by-step explanation: 4+20=24

24/2= 12

-4+12 = 8

Levart [38]2 years ago

4 0

In one dimensions (i.e. with standard numbers and not points with more coordinates) the midpoint is the same as the average.

The average of two numbers is their sum divided by two.

So, we have -4+20=16. Divide this by two to get 8.

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Rainbow [258]

Number 1.
2x to the second power minus 2x minus 4
Number 2.
2a to the second power minus 3b minus a plus b to the second power.

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2 years ago

Write 0.4% as a fraction or mixed number in simplest form.

kherson [118]

Answer:

4/1000

Step-by-step explanation:

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2 years ago

Find the solution to the system of equations below. 2y = 2x - 8 2x + y = 5

ladessa [460]

Answer:

The solution to the system of equations is:

(x, y) = (3, -1)

The graph is attached below.

Step-by-step explanation:

Given the system of equations

$2y = 2x - 8$

$2x + y = 5$

Let us solve the system of equations using the elimination method

$\begin{bmatrix}2y=2x-8\\ 2x+y=5\end{bmatrix}$

Arrange equation variables for elimination

$\begin{bmatrix}2y-2x=-8\\ y+2x=5\end{bmatrix}$

Multiply y + 2x = 5 by 2: 2y + 4x = 10

$\begin{bmatrix}2y-2x=-8\\ 2y+4x=10\end{bmatrix}$

subtracting the equations

$2y+4x=10$

$-$

$\underline{2y-2x=-8}$

$6x=18$

solve 6x = 18 for x

$6x=18$

Divide both sides by 6

$\frac{6x}{6}=\frac{18}{6}$

simplify

$x=3$

For 2y - 2x = -8 plug in x = 3

$2y-2\cdot \:3=-8$

$2y-6=-8$

Add 6 to both sides

$2y-6+6=-8+6$

Simplify

$2y=-2$

Divide both sides by 2

$\frac{2y}{2}=\frac{-2}{2}$

Simplify

$y=-1$

Therefore, the solution to the system of equations is:

(x, y) = (3, -1)

The graph is attached below.

8 0

2 years ago

Identify the Domain and Range of the graph below: Domain: Range:

Nuetrik [128]

Domain is all real numbers
Range i forgot I’m sorry

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3 years ago

X2 = 121 Please HELP!!!

Allushta [10]

The answer will be
x=root 121
x=11

3 0

2 years ago

Read 2 more answers