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Ymorist [56]
3 years ago
6

This figure has rotational symmetry. What is true about the figure?

Mathematics
1 answer:
zhuklara [117]3 years ago
3 0

Answer:

It looks the same if it rotated 120°

Step-by-step explanation:

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6, g 30,5 what is g ?
Troyanec [42]

Answer:

Do you mean g as in the acceleration due to gravity on Earth?

if so, it is 30.5g= 30.5 x 9.81 = 299.205 m/s^2

Step-by-step explanation:

5 0
3 years ago
C.
Softa [21]

Answer:

Lol I had the same question

Step-by-step explanation:

6 0
3 years ago
Assume the random variable x has a binomial distribution with the given probability of obtaining a success. Find the following.
borishaifa [10]

Answer:

P(x > 10) = 0.6981.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this question:

n = 14, p = 0.8

P(x>10)

P(x > 10) = P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14)

In which

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 11) = C_{14,11}.(0.8)^{11}.(0.2)^{3} = 0.2501

P(X = 12) = C_{14,12}.(0.8)^{12}.(0.2)^{2} = 0.2501

P(X = 13) = C_{14,13}.(0.8)^{13}.(0.2)^{1} = 0.1539

P(X = 14) = C_{14,14}.(0.8)^{14}.(0.2)^{0} = 0.0440

P(x > 10) = P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14) = 0.2501 + 0.2501 + 0.1539 + 0.0440 = 0.6981

So P(x > 10) = 0.6981.

8 0
3 years ago
970 grams decreased by 15.1 per min. How many grams are remaining after 14 minutes
Temka [501]

Answer: 98.1

Step-by-step explanation:

Given: mass= 970 gm

Time = 14 min

rate of decay= 15.1% per minute.

Now, computing to get amount of element remaining after 14 minutes.

Formula; Element remaining=

Element remaining=

⇒ Element remaining=

⇒ Element remaining= ≅ 98.1 (nearest 10th of a gram)

∴ 98.1 element is still remaining after 14 minutes.

7 0
3 years ago
Read 2 more answers
The ratio of the number of girls to the number of boys was 4 to 5 if 1,530 students were present how many were girls and how man
vlada-n [284]

Answer:

680 girls and 850 boys

Step-by-step explanation:

the ratio of girls is 4/9

then we can find the number of girls (G) in the group of 1530 students using proportions:

4 / 9 = G / 1530

solving for G by multiplying both sides of the proportion by 1530, we get:

G = 4 * 1530 / 9 = 680

So there were:

680 girls and 1530 - 680 = 850 boys

4 0
3 years ago
Read 2 more answers
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