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Oduvanchick [21]
3 years ago
11

On a coordinate plane, triangle A B C has points (negative 2, 7), (negative 2, 3), and (negative 6, 3) and triangle D E F has po

ints (negative 2, negative 10), (negative 2, negative 2), and (6, negative 2). Given that StartFraction A B Over D E EndFraction = StartFraction B C Over E F EndFraction = one-half, complete the statements to show that △ABC ~ △DEF by the SAS similarity theorem. Horizontal and vertical lines are . So, angles are right angles by definition of perpendicular lines. All right angles are . Therefore, △ABC ~ △DEF by the SAS similarity theorem.
Mathematics
2 answers:
Kipish [7]3 years ago
7 0

Question:

On a coordinate plane, △ABC has points (-2, 7), (-2, 3), and (-6, 3) and △DEF has points (-2,-10), (-2, -2), and (6, -2).

Given that

\frac{AB}{DE} = \frac{BC}{EF} = \frac{1}{2}

Complete the statements to show that △ABC ~ △DEF by the SAS similarity theorem.

Horizontal and vertical lines are __(1)__. So, angles are right angles by definition of perpendicular lines. All right angles are __(2)__

Therefore, △ABC ~ △DEF by the SAS similarity theorem.

Answer:

(1) perpendicular

(2) congruent

Step-by-step explanation:

Required

Fill in the gaps

\frac{AB}{DE} = \frac{BC}{EF} = \frac{1}{2} implies that:

AB : DE= BC : EF

In other words:

AB ~ DE ---- Side (S)

and

BC ~ EF ---- Side (S)

Now to fill in the gap with:

(1) perpendicular

(2) congruent

<u>Further explanation</u>

(1) Vertical lines and horizontal lines meet at a right angle (i.e. 90 degrees). Any two lines that meet at a right angle are perpendicular

(2) Angles with equal measures are congruent. Because right angles have a congruent angles of 90 degrees, then they are congruent.

Temka [501]3 years ago
4 0

Answer:

Given that StartFraction A B Over D E EndFraction = StartFraction B C Over E F EndFraction = one-half, complete the statements to show that △ABC ~ △DEF by the SAS similarity theorem.

Horizontal and vertical lines are

✔ perpendicular

.

So, angles

✔ B and E

are right angles by definition of perpendicular lines.

All right angles are

✔ congruent

.

Therefore, △ABC ~ △DEF by the SAS similarity theorem.

Step-by-step explanation:

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the length of a model car is 1/20 of the length of the actual car. If the model is 8.7 in. long, how long is the actual car?
frez [133]
1/20 is equl to 5% so... 8.7 / 5% =?  or    8.7 / 0.05 = ?

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4 years ago
The answer please! I mean Ik it’s simple but I’m just not clever
wel

Answer:

596.9 cm^2

Step-by-step explanation:

The surface area of a cylinder is SA=2\pi rh+2\pi r^2 where r is the radius of the base of the cylinder and h is the height of the cylinder.

So, the surface area of the cylinder is:

SA=2\pi rh+2\pi r^2

SA=2\pi (5)(14)+2\pi (5)^2

SA=2\pi(70)+2\pi(25)

SA=2\pi(70+25)

SA=2\pi(95)

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3 years ago
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Change each standard form equation to slope-intercept form!
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Hello! 

Slope-intercept form is this one: y=a*x+b where a is the slope and b the intercept. 

So, for transforming these equations to Slope-Intercept you'll need to rearrange the equations by adding or subtracting the same amounts on both sides of the equation (as a rule of thumb, sums are transformed into subtractions and multiplications into divisions).

<span>1) 3x + y = 12

You should notice that Y and X are on the same side of the equation, so by subtracting 3x on both sides of the equation you'll cancel X on the left side:

</span>3x+y-3x=12-3x \\ y=12-3x
<span>
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2) 8=y+5x

</span>You should notice that Y and X are on the same side of the equation, so by subtracting 5x on both sides of the equation you'll cancel X on the right side:

8-5x=y+5x-5x \\ 8-5x=y

To finish, we rearrange this equation to the form y=a*x+b 

y=-5x+8

So, the slope is -5 and the intercept is 8

3) 6x + 3y = -9

You should notice that Y and X are on the same side of the equation, so by subtracting 6x on both sides of the equation you'll cancel X on the left side:

6x+3y-6x=-9-6x \\ 3y=-9-6x

Now, you should notice that y has a number that is multiplying it, so you'll need to divide the entire equation by 3 to cancel this number on the left side.

\frac{3}{3}y= \frac{9}{3}- \frac{6}{3}x  \\ y=3-2x

To finish, we rearrange this equation to the form y=a*x+b 

y=-2x+3

So, the slope is -2 and the intercept is 3

4) 
x - 5y = 55

You should notice that Y and X are on the same side of the equation, so by subtracting x on both sides of the equation you'll cancel X on the left side:

x-5y-x=-55-x \\ -5y=-55-x

Now, you should notice that y has a number that is multiplying it, so you'll need to divide the entire equation by -5 to cancel this number on the left side.

\frac{-5}{-5}y= \frac{55}{-5}- \frac{1}{-5}x \\ y=-11+ \frac{1}{5}x

To finish, we rearrange this equation to the form y=a*x+b 

y=\frac{1}{5}x-11


So, the slope is 1/5 and the intercept is -11

5) -4x-y=-2
You should notice that Y and X are on the same side of the equation, so by adding 4x on both sides of the equation you'll cancel X on the left side:

-4x-y+4x=-2+4x \\ -y=2+4x 

Now, you should notice that y has a number that is multiplying it, so you'll need to divide the entire equation by -1 to cancel this number on the left side.

\frac{-1}{-1} y= \frac{-2}{-1}+ \frac{4}{-1}x \\ y=2-4x

To finish, we rearrange this equation to the form y=a*x+b 

y=-4x+2

So, the slope is -4 and the intercept is 2

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You should notice that Y and X are on the same side of the equation, so by adding 4x on both sides of the equation you'll cancel X on the right side:

-16+4x=-4x+2y+4x \\ -16+4x=2y

Now, you should notice that y has a number that is multiplying it, so you'll need to divide the entire equation by 2 to cancel this number on the right side.

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To finish, we rearrange this equation to the form y=a*x+b 

y=2x-8

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I hope that this helps. Have a nice day!
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The change of base formula is used to calculate a wider range of logarithms. True False
juin [17]
Your answer would be 

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4 years ago
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Ivanshal [37]

Answer:

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Step-by-step explanation:

Una manera de resolver este problema es la siguiente:

\\ 1km^{2} = 1km * 1km = 1000m * 1000m = 1000000m^{2}

\\ 2km^{2} = 2km * 1km = 2000m * 1000m = 2000000m^{2} = 2 * 10^{6}m^{2}

En palabras, \\ 2km^{2} = 2000000m^{2}, o <em>dos kilómetros cuadrados</em> son iguales a <em>2 millones de metros cuadrados</em>.

Sabemos que:

  1. Estos \\ 2km^{2} = 2000000m^{2} de bosque lo ocupan hayas y pinos, y, adicionalmente,
  2. Las hayas ocupan \\ 380000m^{2}.

De esta manera, <em>la parte que ocupan los pinos es el total del bosque menos el área ocupada por las hayas</em>. Por lo tanto, el área ocupada por los pinos es:

\\ 2000000m^{2} - 380000m^{2}

\\ 1620000m^{2}

¿Cuántos metros cuadrados ocupan los pinos?

Los pinos ocupan, entonces, \\ 1620000m^{2} o <em>1 millón seiscientos veinte mil metros cuadrados</em>.

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3 years ago
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