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aksik [14]
3 years ago
13

Describe the relationship between the perimeters of two similar rectangles and scale factor

Mathematics
1 answer:
artcher [175]3 years ago
6 0

Answer:

Just as their corresponding sides are in the same proportion, perimeters and areas of similar polygons have a special relationship. Perimeters: The ratio of the perimeters is the same as the scale factor. ... You square the ratio because area is a two-dimensional measurement.

Step-by-step explanation:

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A principal of $3700 is invested at 4.75% interest, compounded annually. How much will the investment be worth after 9 years?
kipiarov [429]
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7 0
3 years ago
I need more assistance :D Instructions: Using the image, find the distance between the points given on the graph.
lina2011 [118]

Answer:

I usually explain even in the answer.

So we use som\sqrt{x}ething called distance formula which is branched of Pythagorean theorem.

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I am pretty sure answer is right. Always take abolute value

<u>√26</u>

8 0
3 years ago
Find the length of the radius of the circle, which is inscribed into a right trapezoid with lengths of bases a and b.
egoroff_w [7]

Answer:

  r = (ab)/(a+b)

Step-by-step explanation:

Consider the attached sketch. The diagram shows base b at the bottom and base a at the top. The height of the trapezoid must be twice the radius. The point where the slant side of the trapezoid is tangent to the inscribed circle divides that slant side into two parts: lengths (a-r) and (b-r). The sum of these lengths is the length of the slant side, which is the hypotenuse of a right triangle with one leg equal to 2r and the other leg equal to (b-a).

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  -4r(a+b) = -4ab . . . . . . . . subtract common terms from both sides, also -2ab

  r = ab/(a+b) . . . . . . . . . divide by the coefficient of r

The radius of the inscribed circle in a right trapezoid is r = ab/(a+b).

_____

The graph in the second attachment shows a trapezoid with the radius calculated as above.

6 0
3 years ago
Which of the following expressions is equivalent to the expression 2(7x+3)
Ira Lisetskai [31]

Answer:

14x+6 and (7x+7)+(3+3)

Step-by-step explanation:

4 0
3 years ago
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