1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rzqust [24]
3 years ago
6

A regular pentagon with a perimeter of 18 centimeters is dilated by a scale factor of 3 2 32 to create a new pentagon. What is t

he perimeter of the new pentagon?
Mathematics
1 answer:
Svetlanka [38]3 years ago
7 0

Answer:

The perimeter of the new pentagon is 27\ cm

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its perimeters is equal to the scale factor

so

To find the perimeter of the new pentagon, multiply the perimeter of the original pentagon by the scale factor

Let

z ----> the scale factor

z=3/2=1.5

The perimeter of the new pentagon is equal to

(18)*1.5=27\ cm

You might be interested in
Can you solve this? I need help. I don't understand.
ZanzabumX [31]

Answer:

2 sqrt(5) OR 4.5

Step-by-step explanation:

You have to know Pythagorean theorem to solve this question.

a^2 + b^2 = c^2

To use this theorem you have to have a right triangle. There are two right triangles in your image. The lower (larger) one has two sides labeled, so you can use Pythagorean thm to find the third side. There's a short cut, bc some right triangles have easy-to-memorize lengths of the sides. 3-4-5 is one of these number sets. A multiple of this is 6-8-10. We could've solved:

b^2 + 8^2 = 10^2

But it would've come out the same. The unlabeled side is 6.

We can use the 6 and the 4 on the smaller right triangle and use the Pythagorean thm again to solve for x.

4^2 + x^2 = 6^2

16 + x^2 = 36 subtract 16 from both sides.

x^2 = 20

Take the square root of both sides.

sqrt (x^2) = sqrt 20

x = 2 sqrt(5) which is approximately 4.472.

2 sqrt(5) is an exact answer if that is what they are asking for. 4.472 is an approximation to the nearest thousandth. It would be 4.47 to the nearest hundredth or 4.5 to the nearest tenth.

8 0
2 years ago
Which polygons are NOT quadrilaterals? Select THREE that apply.
Afina-wow [57]

Answer:

a cylinder, a sphere, and that little half sphere thing, oh and a triangular pyramid

Step-by-step explanation:

6 0
3 years ago
What is the equation of the line when m = 5 and b = -4?
Alja [10]

Answer:

Y = 5x -4

Step-by-step explanation:

You literally just plug the numbers into the equation below:

y = mx + b.

5 0
3 years ago
One end of a ramp is raised to the back of a truck 5 feet above the ground. 1 point
sveta [45]

Answer:

38.7°

Step-by-step explanation:

You are basically looking at a triangle with a 90° angle (check picture).

Since we are looking for the ramp's angle and are given the length of the opposite and the hypothenuse, we have to solve the following equation:

sin (\alpha) = opposite / hypothenuse= 5 ft/8ft

which is equivalent to

\alpha = sin^{-1}(5/8)\approx 38.7\deg

6 0
3 years ago
Function or not a function
Shkiper50 [21]

Answer:

  • Not a function.

Step-by-step explanation:

<u>Functions have graphs or slopes.</u>

<u>This is not a function.</u>

<u>This is not on a graph or on a slope.</u>

Your answer is not a function.

7 0
2 years ago
Other questions:
  • The manager of the customer service division of a major consumer electronics company is interested in determining whether the cu
    8·1 answer
  • The sum of two consecutive integers is 31. find the larger number
    7·1 answer
  • How do you determine whether each triangle with sides of given lengths is a right triangle 28, 95, 197?
    6·1 answer
  • What is the parpendicular vector to 2i+3j+4k
    10·1 answer
  • Show work and explain with formulas.
    6·1 answer
  • Using the ratio 3 dogs to 2 cats if you had 15 dogs how many cats would there be
    11·2 answers
  • The number of cases of a new diease can be modeled by the quadratic
    14·1 answer
  • 17
    8·1 answer
  • CAN SOMEONE HELP ME PLEASE ASAP!
    6·2 answers
  • (show ur work) Each bag of gourment popcorn for a school fundraiser costs $6.75. The total amount received from the popcorn sale
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!