All categories

3 years ago

2. If a polyhedron has 19 vertices and 13 faces, how many edges does it have?

Mathematics

1 answer:

Margaret [11]3 years ago

6 0

Answer:

30 Edges.

Step-by-step explanation:

Euler's formula tells us that $V-E+F=2$ (Vertices - edges + faces = 2).

Plug the numbers in:

$19-E+13=2$

Solve:

$32-E=2$

$32=2+E$

$30=E$

Therefore, there are 30 edges.

You might be interested in

Bianca reads 3/4 of a page of a book each minute. She has 25 pages left to read. How many pages will she read in 5 1/2 minutes?

Viktor [21]

Answer:

Bianca reads a page of a book in 1 ÷ (3/4) = 1 x (3/4) = 4/3 minutes;

We have 5 1/2 = 11/2 minutes;

She reads (11/2) ÷ (4/3) = (11/2) x (3/4) = 33 /8 = 4 1/8 pages;

Step-by-step explanation:

3 0

4 years ago

Which ratio is equivlant to 3:4

Crank

Answer:

There is multiple. You didnt give options so heres all of them.

Step-by-step explanation:

6 : 8 9 : 12 12 : 16 15 : 20 18 : 24 21 : 28 24 : 32 27 : 36 30 : 40 33 : 44 36 : 48 39 : 52 42 : 56 45 : 60 48 : 64 51 : 68 54 : 72 57 : 76 60 : 80 63 : 84 66 : 88 69 : 92 72 : 96 75 : 1007 8 : 104 81 : 108 84 : 112 87 : 116 90 : 120 93 : 124 96 : 128 99 : 132 102 : 136 105 : 140 108 : 144 111 : 148 114 : 152 117 : 156 120 : 160 123 : 164 126 : 168 129 : 172 132 : 1761 35 : 180 138 : 184 141 : 188 144 : 192 147 : 196 150 : 200 153 : 204 156 : 208 159 : 2121 62 : 216 165 : 220 168 : 224 171 : 228 174 : 232 177 : 236 180 : 240 183 : 244 186 : 248 189 : 252 192 : 256 195 : 260 198 : 264 201 : 268 204 : 272 207 : 276 210 : 280 213 : 284 216 : 288 219 : 292 222 : 296 225 : 300 228 : 304 231 : 308 234 : 312 237 : 316 240 : 320 243 : 324246 : 328249 : 332252 : 336255 : 340258 : 344261 : 348264 : 352267 : 356270 : 360273 : 364276 : 368279 : 372282 : 376285 : 380288 : 384291 : 388

etc etc

4 0

3 years ago

PLEASE HELP ME IF YOU CAN! please tell me how you got the answer thank you!

Law Incorporation [45]

Answer:

D) 35.6

Step-by-step explanation:

Use pythagorean theorem

22^2 + 28^2 = 1268

Take square root of 1268, which equals to 35.60898763.

8 0

3 years ago

PLEASE ANSWER I WILL MARK BRAINLIEST AND AWARD A LOT OF POINTS!!!!!Jeremiah is creating a playlist that has only one song from e

lord [1]

Answer:

448

Step-by-step explanation:

4*2*7*8=448 different combinations

6 0

4 years ago

Read 2 more answers

Write the product of 6x-4 and the multiplicative inverse of 1 over 5

nlexa [21]

Answer:

30x -20

Step-by-step explanation:

The multiplicative inverse (reciprocal) of 1/5 is 5/1 = 5. Multiplying that by 6x-4 gives ...

5 × (6x -4) = 30x -20

6 0

3 years ago