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3 years ago

-3x – 4y = 20

Mathematics

1 answer:

saw5 [17]3 years ago

8 0

Answer:

C) -4

Step-by-step explanation:

this is correct as far as i know.

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Automobile policies are separated into two groups: low-risk and high-risk. Actuary Rahul examines low-risk policies, connuing un

jonny [76]

Answer:

The probability that Actuary Rahul examines fewer policies that Actuary Toby = 0.2857

Step-by-step explanation:

It is said that Actuary Rahul examines a low risk policy

Probability of a low risk policy having a claim = 10% = 0.1

Actuary Toby examines high risk policy

Probability of a high risk policy having a claim = 20% = 0.2

Let the number of policies examined by actuary Rahul before he finds a claim and stop be n

Probability that actuary Rahul examines exactly n policies = $0.9^{n-1} (0.1)$

Probability that Toby examines more than n policies = $0.8^n$

Since the claim statuses of policies are mutually independent, the probability that both events happen simultaneously = $0.9^{n-1} (0.1) (0.8)^n$

probability that both events happen simultaneously = $\frac{0.1}{0.9} (0.72^{n})$

The probability that Actuary Rahul examines fewer policies that Actuary Toby = $\sum\limits^ \infty_1 {\frac{0.1}{0.9} 0.72^{n} }$ = $\frac{1}{9}\sum\limits^ \infty_1 { 0.72^{n} } = \frac{1}{9} (\frac{0.72}{1-0.72} ) = \frac{1}{9} (\frac{0.72}{0.28} )$

The probability that Actuary Rahul examines fewer policies that Actuary Toby = 0.2857

5 0

3 years ago

Rewrite as a simplified fraction.<br>2.3 = ?

zubka84 [21]

Answer:

23/100 or 23/10

Step-by-step explanation:

2.3/1

(2.3 x 10) / (1 x 10) =23/10

find lcm (lowest common multiple) for 23 and 10

1 is the lcm for 23 and 10

23/10 is a simplest fraction for the decimal point number 2.3

7 0

3 years ago

The graph of a function must pass the __________ line test. <br> A) vertical <br> B) horizontal

olga2289 [7]

Answer:

A) Vertical.

Step-by-step explanation:

It must pass the vertical line test. That is it must not have any vertical line passing through more than one point on the curve. If it does then it is not a function.

Thus , for example, a circle graph would not be a function.

5 0

3 years ago

Read 2 more answers

7th grade help me plzzzzz

Gekata [30.6K]

Answer:

fifteen, "number sentence"

Step-by-step explanation:

5 + 5 +5 = 15

4 0

3 years ago

A farm is to be built in the shape of Quadrilateral ABCD, as shown below. All four sides are equal.

lapo4ka [179]

9514 1404 393

Answer:

65.52 square feet

Step-by-step explanation:

The area of a rhombus is half the product of the diagonals.

A = (1/2)ab

A = (1/2)(12.6 ft)(10.4 ft) = 65.52 ft²

The area of the farm is 65.52 square feet.

6 0

3 years ago