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3 years ago

If A = (-2,-4) and B = (-8,4), what is the length of AE?

Mathematics

1 answer:

almond37 [142]3 years ago

3 0

Answer:

It's C

Step-by-step explanation: How far is it from -2 to -8 horizontally?

They are 6 apart, right?

How far is -4 to 4 vertically? 8.

__________________________________________________________

6^2 + 8^2 = c^2

36 + 64 = c^2

c = 100 = 10

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So in short yea...it's C UwU

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Simplify the expression: ( X + 5)( X-7)

Hitman42 [59]

(x + 5)(x - 7)
x(x - 7) + 5(x - 7)
x(x) - x(7) + 5(x) - 5(7)
x² - 7x + 5x - 35
x² - 2x - 35

7 0

3 years ago

Read 2 more answers

Will mark brainliest!!

wlad13 [49]

Solve the system

9x = 27-9y
20x=71-9y

Let's use the "elimination through addition/subtraction method.
Multiply the first equation by -1 so as to obtain +9y:

-9x = -27 + 9y
20x= 71- 9y
--------------------

Add these 2 equations together:

-9x = -27 + 9y
20x= 71- 9y
--------------------
 11x = 44

Solve this for x: x = 44/11 = 4.

Now find y by subst. 4 for x in either of the original equations.

Using the second equation: 

20x=71-9y
20(4) = 71 - 9y
80-71 = -9y
9 = -9y. Then y = -1.

The solution set is (4,-1).

7 0

3 years ago

A submarine is descending to examine the seafloor 2,100 feet below the surface. it takes the submarine 2 hours to make this desc

Andrej [43]

Answer:

Step-by-step explanation:

x = time

y = elevation

At x = 0 , y = 0

It takes the submarine 2 hours to make descent of 2100 ft

=> x = 2 , y = - 2100

Slope = ( -2100 - 0)/(2 - 0) = -1050

y - 0 = -1050 ( x -0)

=> y = -1050x

1050x + y = 0

represent the relationship between the submarine's elevation and time.

3 0

1 year ago

Randomly selected statistics students of the author participated in an experiment to test their ability to determine when 60 sec

Zanzabum

Answer:

The answer would be: We are 95% confident that the interval from 55.4 seconds to 61.2 seconds actually does contain the true value of μ.

8 0

3 years ago

Which represents a function?

VLD [36.1K]

Answer:

$\boxed{ \text{Option \: D}}$

Step-by-step explanation:

All the relations are not functions. We can determine ( identify ) whether a relation is function or not by drawing a vertical line intersecting the graph of the relation. This is called vertical line test.

If the vertical line intersects the graph of a relation at one point , the relation is a function .
If it cuts at more than one point , it is not a function. It means that if there are more points of the graph of a relation of a vertical line , same first component ( pre - image ) has more images ( second component ) which is not the function by definition.

--------------------------------------------------

Let's check all of the options :

☐ Option A :

The vertical line cuts the graph at two points. So , the graph does not represent a function.

☐ Option B

No! This is also not a function as the vertical line cuts the graph at two points.

☐ Option C

Nah! This too can't be called a function as the vertical line cuts the graph at two points.

☑ Option D

Yep! The vertical line cuts the graph at one point. Thus , the graph represents a function.

Yayy!! We found our answer. It's ' Option D '.

Hope I helped ! ツ

Have a wonderful day / night ! ♡

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4 0

2 years ago