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s2008m [1.1K]
3 years ago
12

Which number is irrational? A. 75 B. 5√ C. 7.356 D. -3

Mathematics
1 answer:
mylen [45]3 years ago
5 0
B. is an irrational number i think
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K-20/5=11j ; solve for k
yan [13]
In terms of j: 55j+20 = k 
4 0
3 years ago
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at a particular high school, 42% of the students participate in sports and 25% of the students participate in drama. if 53% of t
baherus [9]

The probability that a student participates in both sports and drama is 0.14.

<h3>What is the formula for P(AUB), where A and B are any two events?</h3>

If A and B are any two events, then the probability of the joint event (A\cup B) is given by the following formula: P(A\cup B)=P(A)+P(B)-P(A\cap B)

Given that 42% of the students participate in sports and 25% of the students participate in drama and 53% of the students participate in either sports or drama.

Suppose S denotes that "a student participates in sports" and D denotes that "a student participates in drama".
So, we have P(S)=\frac{42}{100}=0.42, P(D)=\frac{25}{100}=0.25, P(S\cup D)=\frac{53}{100}=0.53.

We want to find the probability that a student participates in both sports and drama i.e., we want to find P(S\cap D).

By the above formula, we obtain:

P(S\cup D)=P(S)+P(D)-P(S\cap D)\\\Longrightarrow P(S\cap D)=P(S)+P(D)-P(S\cup D)\\\Longrightarrow P(S\cap D)=0.42+0.25-0.53\\\therefore P(S\cap D)=0.14=\frac{14}{100}

Therefore, the probability that a student participates in both sports and drama is 0.14.

To learn more about probability, refer: brainly.com/question/24756209

#SPJ9

6 0
2 years ago
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Walter has 3 more red peppers than green peppers. In all, he has 35 peppers. How many green peppers does Walter have?
Oksanka [162]

Answer:

16

Step-by-step explanation:

16+19=35

19-16=3

16 green peppers

8 0
3 years ago
Write an equivalent expression.
djyliett [7]
8.5 the answer is and replace the areas
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2 years ago
Simplify using appropriate identity 0.85 × 0.85 +2 × 0.85 ×0.15 × 0.15
spayn [35]

The answer is <u><em>0.76075</em></u>!

<em>Hope this helps!</em>

7 0
3 years ago
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