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NISA [10]
3 years ago
15

1)The square shown has a perimeter of 32 units. The square is rotated about line k. 

Mathematics
2 answers:
monitta3 years ago
7 0

Answer:

D. a cylinder with a circumference of about 50 units

Step-by-step explanation:

I just took the test on Edg, this is the actual answer. :) Good luck!

natali 33 [55]3 years ago
5 0
1. The perimeter of the square is 32 units, means each side is 32/4=8 units.

rotating the square about line k forms a cylinder with base radius equal to 8 units, and height equal to 8 units. (check the first picture)

the circumference of the base is C=2πR=16π units=16*3.14 units = 50.24 units.

Answer:  <span>a cylinder with a circumference of about 50 units

2. 
Rotating the equilateral triangle around line a, produces a cone with base radius equal to half of one side of the triangle, that is r=10mm.

(check picture 2)

The circumference is </span>C = 2πr=<span>C = 2*3.14*10=62.8 mm

Answer: </span><span>a cone with a base circumference of about 63 mm</span>

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Answer:

it  X+3

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Step-by-step explanation: 6(x+2)=30

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6 0
3 years ago
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77julia77 [94]

Answer:

No x^3 times x^5 is not equal to x^15. It is equal to x^8

Step-by-step explanation:

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3 years ago
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What is the measure arc PD?<br> a) 35°<br> b) 90°<br> c) 110°<br> d) 180°
solmaris [256]

Answer:

  c)  110°

Step-by-step explanation:

Arc FP is twice the measure of the marked angle, so is 70°. If FD is supposed to be a diameter, then arc FPD is a semicircle (180°) and arc PD is 180° -70° = 110°.

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3 years ago
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Flura [38]
I would believe it would be something like; 120 miles: 2 hours, 800 lbs: 40 square inches...etc.
4 0
3 years ago
Rhombus ADEF is inscribed in △ABC such that the vertices D, E, and F lie on the sides AB , BC , and AC respectively. Find the si
Oksanka [162]
<h3>Answer:</h3>

3 11/15 cm

<h3>Step-by-step explanation:</h3>

AE is the angle bisector of ∠A, so divides the sides of the triangle into a proportion:

... BE:CE = BA:CA = 7:8

Then ...

... BE:BC = 7 : (7+8) = 7:15

ΔDBE ~ ΔABC, so DE = 7/15 × AC

... DE = 7/15 × 8 cm = (56/15) cm

... DE = 3 11/15 cm

3 0
2 years ago
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