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3 years ago

Write odd numbers between 12 and 20

Mathematics

1 answer:

OlgaM077 [116]3 years ago

4 0

Answer:

13,15,17,19

Step-by-step explanation:

but 13,17,19are prime numbers

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I don’t get this type of problem

JulijaS [17]

Answer:

Which type of problem ...lol u have to mention this too

6 0

3 years ago

Read 2 more answers

What is the area of the polygon in square units? <br><br>

prisoha [69]

Answer:

(d) 80 square units

Step-by-step explanation:

As with many composite area problems, this can be worked any of several ways. The attached shows trapezoid ABCE, from which triangle CDE can be removed to get the desired area.

The relevant formulas are ...

A = (1/2)(b1 +b2)h . . . . . . area of a trapezoid

A= (1/2)bh . . . . . . . . . . . . area of a triangle

Here, the trapezoid has bases 12 and 2, and height 12, so its area is ...

A = (1/2)(12 +2)(12) = 84 . . . . square units

The triangle has a base of 4 and a height of 2, so its area is ...

A = (1/2)(4)(2) = 4 . . . . square units

Then the area of the desired figure is ...

84 - 4 = 80 . . . . square units

3 0

3 years ago

An electronic product contains 40 integrated circuits. The probability that any integrated circuit is defective is 0.01, and the

neonofarm [45]

Answer:

There is a 33.10% probability that there is at least one defective integrated circuit.

Step-by-step explanation:

For either integrated circuit, there are only two possible outcomes. Either they are defective, or they are not. This means that we can solve this problem using the binomial probability distribution.

Binomial probability distribution

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

$P(X = x) = C_{n,x}.\pi^{x}.(1-\pi)^{n-x}$

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

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

And $\pi$ is the probability of X happening.

In this problem

The electonic product contains 40 integrated circuits, so $n = 40$ .

The probability that any integrated circuit is defective is 0.01, so $\pi = 0.01$

What is the probability that there is at least one defective integrated circuit?

Either there is at least one defective integrated circuit, that is probability $P(X > 0)$ , or there are no defective integrated circuits, that is probability $P(X = 0)$ . The sum of these probabilities is decimal 1. We want to find $P(X>0)$ .