Write each number in expanded form using exponent Four and eighty_three thousandth

2 answers:

7 0

Four is simply written as 4.
83000 is written as 80000+3000

Now, your grammar and unusual spelling means that you might be talking about 483000, which would be 400000+80000+3000

Hope this helps

Gnoma [55]3 years ago

6 0

(4 x 1) + (0 x 0.1) + (8 x 0.01) + (3 x 0.001) = 4.083

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Find the surface area of the pyramid

Anestetic [448]

Area of base + (area of triangle surface) = surface area of a pyramid
3 * 3 + (3 * 6 ÷ 2 * 4) = 45
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4 0

4 years ago

Birth certificates show that approximately 9% of all births in the United States are to teen mothers (ages 15 to 19), 24% to you

Ira Lisetskai [31]

Answer:

The probability that a birth was to a teen mother if we know that the pregnancy was unintended is 0.1942.

Step-by-step explanation:

Denote the events as follows:

T = birth was to a teen mother

Y = birth was to a young-adult mother

A = birth was to an adult mother

U = a birth was unintended

I = a birth was intended.

Given:

P (T) = 0.09

P (Y) = 0.24

P (A) = 0.67

P (I | T) = 0.23

P (U | T) = 0.77

P (I | Y) = 0.50

P (U | Y) = 1 - P (I | Y) = 0.50

P (I | A) = 0.75

P (U | A) = 1 - P (I | A) = 0.75 = 0.25

Consider the tree diagram below.

According to the Bayes' theorem,

$P(B|A)=\frac{P(A|B)P(B)}{P(A|B)P(B)+P(A|B^{c})P(B^{c})}$

Using the Bayes' theorem compute the probability that a birth was to a teen mother if we know that the pregnancy was unintended as follows:

$P(T|U)=\frac{P(U|T)P(T)}{P(U|T)P(T)+P(U|Y)P(Y)+P(U|A)P(A)} \\=\frac{(0.77\times0.09)}{(0.77\times0.09)+(0.50\times0.24)+(0.25\times0.67)} \\=0.19423\\\approx0.1942$