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atroni [7]
3 years ago
8

HELPPPPPPPPPPPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEE (on both of them please))))

Mathematics
2 answers:
Troyanec [42]3 years ago
6 0

Answer:

14.4 inches

Step-by-step explanation:

Using the Pythagorean Theorem (a^2+b^2=c^2\\)

12^2+8^2=c^2\\144+64=c^2\\208=c^2\\c=\sqrt{208} = 14.4

Hope this helps you out!

Flauer [41]3 years ago
4 0
The first one is a triangle because: The two smaller sides of a triangle must add up to be larger than the longest side.
14 + 12 = 26 > 19
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Find all solutions to the following system of equations -y²+6y+x-9=0 ; 6y=x+27.Illustrate with a graph.
Dimas [21]

Answer:

The solution to the system is the pair (9, 6)

Step-by-step explanation:

Hi!

First, let´s write the system of equations:

-y² + 6y + x -9 = 0

6y = x +27

The solutions of the system are the pairs (x, y) that satisfy both equations.

Let´s take the second equation and solve it for x:

6y = x +27

Subtract 27 from both sides of the equation

6y - 27 = x

Now, we can replace x in the first equation and solve it for y:

-y² + 6y + x -9 = 0

-y² + 6y + 6y - 27 -9 = 0

-y² + 12y - 36 = 0

Notice that -y² + 12y - 36 = -(y - 6)², then:

-(y - 6)² = 0

y - 6 = 0

y = 6

(alternatively you can solve the quadratic equation using the quadratic formula).

Now let´s find the value of x:

x = 6y -27

x = 6·6 -27

x = 9

The solution to the system is the pair (9, 6)

Please see the attached figure. The point where the curves intersect is the solution to the system.

6 0
3 years ago
Please help its very urgent toooooooo .
GenaCL600 [577]

Answer

240 degrees

Step-by-step explanation:

6 0
3 years ago
:) y = (3 - x)(x + 2)​
valentina_108 [34]

Answer:

-x² + x + 6

Step-by-step explanation:

Hey there!

To solve this, you have to use foil...

( 3 - x ) ( x + 2 )

3 ( x + 2 ) = 3x + 6

-x ( x + 2 ) = -x² - 2x

3x + 6 - 2x - x²

-x² + x + 6

Hope this helps :)

8 0
3 years ago
If ABC is reflecting across the y-axis ,what are the coordinates of c’?
Brums [2.3K]
<h3>Answer:   (-6, 3)</h3>

Explanation:

First step is to locate point C. It is at location (6, 3)

Reflecting this over the y axis will change the sign of the x coordinate, while keeping the y coordinate the same. We go from (6, 3) to (-6, 3)

The algebraic rule for this is (x, y) \to (-x,y)

Therefore, point C' is located at (-6, 3)

7 0
3 years ago
which of the following is not the characteristics of numerical computing? a) aacuracy b) efficiency c) stability d)truncatating​
Mkey [24]

Based on the explanation below, the option which is not the characteristics of numerical computing d) truncatating​.

<h3>What is numerical computing?</h3>

Numerical computing is a technique for tackling difficult mathematical problems with only basic arithmetic operations.

The method entails the creation of mathematical models that can be solved using arithmetic procedures.

The three characteristics of numerical computing are accuracy, efficiency, and stability.

Learn more about accuracy here: brainly.com/question/15276983.

#SPJ1

7 0
2 years ago
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