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klemol [59]
2 years ago
13

6. If four numbers are in proportion, then the terms equals the product of​

Mathematics
1 answer:
snow_tiger [21]2 years ago
3 0

Answer: If four numbers are proportional, a : b = c : d, then the product of the extremes is equal to the product of the means. ad = bc

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Draw two polygons that have corresponding angles that are all congruent but are not similar to prove that angle congruence is no
Marina86 [1]

There are infinitely many ways to do this. One such way is to draw a very thin stretched out rectangle (say one that is very tall) and a square. Example: the rectangle is 100 by 2, while the square is 4 by 4.

Both the rectangle and the square have the same corresponding angle measures. All angles are 90 degrees.

However, the figures are not similar. You cannot scale the rectangle to have it line up with the square. The proportions of the sides do not lead to the same ratio

100/4 = 25

2/4 = 0.5

so 100/4 = 2/4 is not a true equation. This numerically proves the figures are not similar.

side note: if you are working with triangles, then all you need are two pairs of congruent corresponding angles. If you have more than three sides for the polygon, then you'll need to confirm the sides are in proportion along with the angles being congruent as well.

3 0
3 years ago
An equation is modeled. What value of x makes the equation true? Explain.
nirvana33 [79]

Answer:

B: x=-1

Step-by-step explanation:

5x+6=1

5x+6-6=1-6

simplify

divide by 5 on both sides

x=-1

4 0
3 years ago
How write Word Form<br><br>30,000+2,000+300+40-2​
belka [17]

Answer:

thirty thousand plus two thousand plus three hundred plus fourty minus two

~batmans wife dun dun dun....

5 0
3 years ago
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Please help Edgar used 10d to represent the number of pennies in d dollars. Is this reasonable ? Please explain if it is right o
GalinKa [24]
Not reasonable, there are 100 pennies in a dollar so the actual equation is 100d
4 0
3 years ago
Find the x-intercept of the line 3x - 9y = 15.
erastovalidia [21]

Answer:

The x-intercept is 5.

Some people prefer you right it as a point (5,0).

Step-by-step explanation:

The x-intercept can be found by setting y=0 and solving for x.

Just like to find the y-intercept you can set x=0 and solve for y.

Let's find the x-intercept.

So we will set y=0 and solve for x:

3x-9y=15

3x-9(0)=15

3x-0    =15

3x        =15

Divide both sides by 3:

 x         =15/3

 x          =5

So the x-intercept is (5,0).

4 0
3 years ago
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