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scoray [572]
4 years ago
13

What is the ninth triangular number?

Mathematics
1 answer:
earnstyle [38]4 years ago
5 0
27 I think..... Oh darn I'm replying to my self
You might be interested in
Need help ASAP like right now
yulyashka [42]

Answer: =160

Step-by-step explanation:

Volume of prism= 1 1/3 x 5/6 x 2/3 = 4/3 x 5/6 x 2/3 = 20/27

Volume of cube= 1/6 x 1/6 x 1/6 = 1/216

Number Cubes packed in rectangular prism= 20/27 / 1/216 = 160

3 0
3 years ago
Read 2 more answers
Please help me ASAP and explain or no brainlist
serg [7]

Answer:

its 1/3

Step-by-step explanation:

its because the chances of rolling every single type of roll, (such as 1 and 1, 1 and 2, 1 and 3, etc. is well around 36 possibilities. SIMPLIFIED into 1/3.

7 0
3 years ago
There are values of t so that cos t=5/4 O A True O B. False​
kupik [55]

Answer:

I think its false but im not 100 percent sure i hope this helps

Step-by-step explanation:

6 0
3 years ago
During a 20 kilometer hike, Deana consumed 334 quarts of water. What was Deana's average water consumption in quarts per kilomet
boyakko [2]

Answer:

  • 16.7 quarts/km

Step-by-step explanation:

  • Distance = 20 km
  • Water consumed = 334 quarts

<u>Water consumption rate is:</u>

  • 334 quarts / 20 km = 16.7 quarts/km
8 0
3 years ago
A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 47.047.0 and
alisha [4.7K]

Answer:

0.025 = 2.5% probability that a given class period runs between 51.5 and 51.75 minutes.

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X lower than x is between c and d is given by the following formula

P(c \leq X \leq d) = \frac{d - c}{b-a}

For this problem, we have that:

a = 47, b = 57, c = 51.5, d = 51.75. So

P(c \leq X \leq d) = \frac{d - c}{b-a}

P(51.5 \leq X \leq 51.75) = \frac{51.75 - 51.5}{57 - 47} = 0.025

0.025 = 2.5% probability that a given class period runs between 51.5 and 51.75 minutes.

4 0
3 years ago
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