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Mrrafil [7]
3 years ago
14

What is the angle of rotation about the center that will map the regular pentagon onto itself

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
7 0

Answer:

I think c 430 and if it is wrong I'm so sorry

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Question 14 (1 point)
labwork [276]

Answer:

Step-by-step explanation:

I don't think it really does grow by a constant rate. As he puts money in, the amount he puts in becomes less significant to the total.

Suppose he starts at 100 dollars.

After week one, he puts in 100 + 15 = 115 dollars.

The 15 dollars represents an increase of  15/100

After the second week, he puts in another 15 dollars. He has 115 in there already.

(15/115) * 100% = 13.04%

After the third week, he puts in another 15 dollars. (15/130 ) * 100% = 11.53

And so one

4 0
3 years ago
Which lines are perpendicular to the the line y -1=1/3(x+2)
maria [59]
Any line with a slope of -3
8 0
3 years ago
Find the perimeter. Simplify your answer.
andrew-mc [135]

Answer:

3a+ 16

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7 0
2 years ago
Masha biked 20km 20 minutes faster than Dasha biked 20km. Find the speed of each cyclist if one biked 2km/h faster than the othe
motikmotik

Answer:

  • 12 km/h and 10 km/h

Step-by-step explanation:

Let the speed of Masha = s, speed of Dasha = d

  • Distance = 20 km
  • Time difference = 20 min = 1/3 hr
  • Speed difference  = 2 km/h

<u>As per above info we get following equations:</u>

  • s = d + 2
  • 20/s + 1/3 = 20/d

<u>Substitute s and solve for d:</u>

  • 20/(d + 2) + 1/3 = 20/d

<u>Get rid of fraction by multiplying all terms by 3d(d + 2):</u>

  • 60d + d(d + 2) = 60(d + 2)
  • 60d + d² + 2d = 60d + 120
  • d² + 2d = 120
  • d² + 2d + 1 = 121
  • (d + 1)² = 11²
  • d + 1 = 11
  • d = 10

<u>Find s:</u>

  • s = 10 + 2 = 12

<u>The answer is</u>

  • Masha's speed 12 km/h and Dasha's speed 10 km/h
3 0
2 years ago
Does (40,0) make the equation y=0 true?​
Basile [38]

Use the substitution method for y=0

(40,0)

y=0

0=0

Answer: (40,0)  It does make the equation y=0 true

5 0
3 years ago
Read 2 more answers
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