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3 years ago

Which three-dimensional figure has exactly three rectangular faces?

2 answers:

8 0

Triangular prism.

Picture in your mind what each prism would look like. A rectangular prism would have 6 rectangle faces, a rectangular pyramid would have 1, and a triangular prism would have none.

iragen [17]3 years ago

7 0

A three-dimensional shape with two parallel congruent circular faces whose cross sections (taken parallel to these circular faces) are circular.

So yes triangular prism

You might be interested in

Consider all four-digit numbers that can be made from the digits 0-8 (assume that numbers cannot start with 0). What is the prob

vodomira [7]

Answer:

0.2498

Step-by-step explanation:

Number of 4 digit numbers that can be formed from the digit (0 - 8), assume number can't start from 0

Thus ;

First digit = (1, 2, 3, 4, 5, 6, 7, 8) = 8 ways

Next three digits = (0, 1, 2, 3, 4, 5, 6, 7, 8) = 9 ways

Hence,

Total possible outcomes = sample space = (8 * 9 * 9 * 9) = (8 * 9^3 ) = 8 * 729 = 5832

Required = number greater Than 7000

For number to be greater Than 7000, starting digit should be either 7 or 8

Hence,

First digit = 2 ways

Next three digits = 9 ways

Also excluding 7000

Hence, Number of digits above 7000;

2 * 9^3 = 2 * 729 = 1458 - 1 = 1457

Hence,

Probability = 1457 / 5832

= 0.2498285

= 0.2498

7 0

3 years ago

Two different floor plans are being offered in a new housing development. Several prospective

cricket20 [7]

Answer:

0.912

Step-by-step explanation:

The complete question is attached.

"OR" in probability means "ADDITION". So we find the individual probabilities and "ADD" them.

P(Plan A) would be the total people for plan A (add up column of Plan A) divided by total number of people [add up all the numbers].

Looking at the table, we have:

P (Plan A) = 38/68

Now,

P(40-49 Group) can be found by adding up the row of 40-49 age group and dividing by the total. So, we have:

P(40 - 49 Group) = 24/68

Now, adding up both:

38/68 + 24/68 = 62/68 = 0.912

7 0

3 years ago

Cost of a comic book: 3.95 Markup: 20%

Ghella [55]

The cost would be $4.74. 3.95 times 0.2 is 0.79. Add that to 3.95 and get 4.47

4 0

3 years ago

A superhero recently asked his nemesis how many cats she has. she answered with a riddle: "seven eights" of my cats plus two" ho

ryzh [129]

If the nemesis has "7/8 of her cats plus 2" it can be written like this: 7/8 x + 2 = x, where x is the number of the cats. After that we can solve the equation. x - 7/8 x = 2; 1/8 x = 2; x = 2 : 1/8 = 2 * 8 = 16. Answer: The nemesis has 16 cats.

3 0

4 years ago

A. 2x4 + 21x2 +3x -2 B. 2x4 + 9x2 -2 C. 3x2 + 6x+ 1 D. 2x4 + 9x3 +12x2 + 3x -2

Inga [223]

You need to foil, The answer is D

6 0

3 years ago