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Crank
3 years ago
6

PLZ HELP GEOMETRY BELOW

Mathematics
1 answer:
katen-ka-za [31]3 years ago
7 0

This is known as Einstein's proof, not because he was the first to come up with it, but because he came up with it as a 15 year old boy.

Here the problem is justification step 2.  The written equation

BC ÷ DC = BC ÷ AC

is incorrect, and wouldn't get us our statement 2, which is correct.

For similar triangles we have to carefully pair the corresponding parts to get our ratios right:

ABC ~ BDC means AB:BD = BC:DC = AC:BC so BC/DC=AC/BC.

Justification 2 has the final division upside down.


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If you divide my number by "-5 and add -2, the result is -4. What's my number?
zepelin [54]

Answer:

10

Step-by-step explanation:

10/-5 = -2

-2+-2 = -4

6 0
3 years ago
Read 2 more answers
What are the coordinates of point A?​
Ratling [72]

Answer:

  (d)  (7, -5)

Step-by-step explanation:

The x-coordinate is listed first in an ordered pair. It is found on the horizontal scale. The point is on the grid line halfway between 6 and 8, so is presumed to have an x-coordinate of 7.

The y-coordinate is listed second in an ordered pair. It is found on the vertical scale. The point is on the grid line halfway between -4 and -6, so is presumed to have a y-coordinate of -5.

The coordinates of point A are (x, y) = (7, -5).

__

<em>Additional comment</em>

As in the case here, you will often run across graphs that don't have markings on every grid line You are expected to be able to figure out the value of a grid line based on the spacing of the marked lines.

It is a good idea to get familiar with reading coordinates of a point on a graph, as you will be doing it a lot.

4 0
2 years ago
Show me how to get the answer to 4.5÷0.25
Lemur [1.5K]
The answer is 18 i think 
3 0
3 years ago
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The graph shows the savings in Andre’s bank account.
Vadim26 [7]

Answer:

The slope is 1/5

Andre is saving 4 dollars per week.

Step-by-step explanation:

5 0
3 years ago
Y = -63 y = 8x + 6<br>Use Substitution to solve​
allochka39001 [22]

9514 1404 393

Answer:

  (x, y) = (-8.625, -63)

Step-by-step explanation:

Substitute for y.

  -63 = 8x +6

  -69 = 8x . . . . . subtract 6

  -69/8 = x = -8.625

The solution is (x, y) = (-8.625, -63).

7 0
3 years ago
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