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3 years ago

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A regular pentagon was a perimeter of 21" is dilated by a scale factor of 5/3 to create a new pentagon what is the perimeter of

the new pentagon

1 answer:

yKpoI14uk [10]3 years ago

5 0

The new perimeter of the pentagon is 35".

This can be found by multiplying 3/5 by the original perimeter, 21"

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The equilateral triangle shown is rotated about line a. Each side of the triangle measures 20 mm. What shape is created by the r

zysi [14]

Answer:

a cone with a base circumference of about 126 mm

Step-by-step explanation:

Rotating a triangle about a line results in a cone created by the rotation. This is because the segment at the bottom forms a circle, and the point at the top stays there; the three-dimensional figure with a circular base and a point at the top is a cone.

Since we rotate the segments about a line, this makes the length of the base the radius of the circle. This means the circumference would be

C = 2πr = 2(3.14)(20) = 125.6 ≈ 126 mm

3 0

3 years ago

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Creat a table to show values for g and a

babunello [35]

this is the one that I did

7 0

3 years ago

CAN SOMEONE PLEASE HELP ME????

pochemuha

Answer:

$C.\{-4,-2,~0,~2,~4\}$

Step-by-step explanation:

$Greetings!$

$I'm~Isabelle~Williams~and~I~will~be~answering~your~question!$

$I~know~you~asked~for~only~the~domain,~but~just~in~case~I'll~type~down~the~range~\\too:$

$The~ domain ~is ~the ~set~ of~ all ~the~ values ~of ~x. ~The~ range~ is~ the~ set~ of~ all ~the ~values \\~of ~y.$

$Domain:\{-4,-2,~0,~2,~4\}$

$Range:\{-1,~1,~3,~0\}$

$Thus,~making~the~3^r^d~option~correct!$

$Hope~this~helps!~Have~an~amazing~day!$

$-Isabelle~Williams$

4 0

3 years ago

If triangle PQR is similar to SQT, find the value of

ankoles [38]

Answer:

x = 31.4

PQ = 58.8

Step-by-step explanation:

Set up a proportion:

SQ/QP = ST/PR

Substitute in the values they give you:

$\frac{x-9}{x-9+x+5} = \frac{8}{21}$

$\frac{x - 9}{2x - 4} = \frac{8}{21}$

$21x - 189 = 16x - 32\\5x = 157\\x = 31.4$

This means that PQ = 2x - 4 = 2(31.4) - 4 = 62.8-4 = 58.8

5 0

3 years ago

Read 2 more answers

Easy points given to those who enjoy math, cus as you can tell I'm not one of those

SCORPION-xisa [38]

4x=2x+6 set the two sides equal to each other
2x=6 subtract 2x to the other side
x=3 divide by 2
C

8 0

3 years ago