Answer: X=16

Explanation: when you plug in -7 for x in the equation you have and just multiply it by -3 you will get 21 then subtract 5 and that will give yo 16

7 0

2 years ago

The number 4,304 in word from

emmasim [6.3K]

Answer:

four thousand three hundred and four

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

The scale of a map is 1 inch to 175 miles the actual distance between Chicago Illinois in Pittsburgh PA is 375 miles find the di

aleksklad [387]

<u>Given</u>:

A map shows some cities in the northern United States. The scale of a map is $1 \ inch: 125 \ miles$

The actual distance between Chicago, IL and Pittsburgh, PA is 375 miles.

We need to determine the distance between the two cities on the map.

<u>Distance between the two cities:</u>

The distance between the two cities on the map can be determined by dividing the actual distance by 125 miles.

Thus, we have;

$Distance=\frac{375}{125}$

Dividing the terms, we get;

$Distance = 3$

Thus, the distance between the two cities on the map is 3 inch.

6 0

2 years ago

The Online Exam from Applied Statistics consists of 6 questions. Statistics show that there is a 75% chance that the student wil

Kryger [21]

Solution :

a). The probability that the student will $\text{correctly answer}$ the 1st question after the 4th attempt.

P (correct in the 4th attempt)

= $(1-0.75)^3 \times 0.75$

= 0.01171875

b). The probability that the student will $\text{correctly answer}$ 3 questions after 10 total attempts.

P( X = 3) for X = B in (n = 10, p = 0.75)

= $C(10,30) \times 0.75^3 \times 0.25^7$

= 0.0031

c). The mean and the standard deviation for the number of attempts up to when the students gets all the questions correct is :

There are = 6 success, p = 0.75.

Therefore, this is a case of a negative binomial distribution.

$E(X)=\frac{k}{p}$

$=\frac{6}{0.75}$

= 8

So, $\sigma = \frac{\sqrt{k(1-p)}}{p}$

$\sigma = \frac{\sqrt{6(1-0.75)}}{0.75}$

= 1.6330

6 0

3 years ago