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3 years ago

Giving 50 points to anyone who answers these 2 questions im having trouble with! (3 and 4)

Mathematics

2 answers:

Zielflug [23.3K]3 years ago

8 0

Problem 3:

We basically find the Least Common Multiple of the numbers 5 and 11 and add the number of minutes to 6:00.

LCM of (5, 11)= 55

Answer: 6:55

Problem 4:

$\frac{7}{8}$ divided by $\frac{4}{5}$ equals $\frac{7}{10}$

denis-greek [22]3 years ago

4 0

Answer:

1. 6:55 2. 7/10

Step-by-step explanation:

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An optical inspection system is used to distinguish among different part types. The probability of a correct classification of a

Whitepunk [10]

Answer: $\mu=2.88\ \&\ \sigma^2=0.115$

Step-by-step explanation:

Given : The probability of a correct classification of any part is : p=0.96

sample size : n= 3

The formula to find the mean and variance for binomial distribution is given by :-

$\mu=np\\\\\sigma^2=np(1-p)$

Let the random variable X denote the number of parts that are correctly classified.

The, for the given situation, we have

$\mu=3(0.96)=2.88\\\\\sigma^2=(3)(0.96)(1-0.96)=0.1152\approx0.115$

Hence, the mean and variance of X are 2.88 and 0.115 respectively.

4 0

3 years ago

Among 500 freshmen pursuing a business degree at a university, 311 are enrolled in an economics course, 243 are enrolled in a ma

Allushta [10]

Solution :

Let A = Economics, B = Mathematics

n(A) = 311, n(B) = 243, $n(A \cap B) = 135$

a). So, $n(A \cup B) = n(A) +n(B) - n(A \cap B)$

= 311 + 243 - 135

= 419

b). n(A only) = 311 - 135

= 176

n(B only) = 243 - 135

= 108

Exactly one of these two courses

$=\frac{176+108}{500}$

= 0.568

c). Neither economics nor mathematics

$=\frac{500-419}{500}$

$=\frac{81}{500}$

= 0.162

7 0

3 years ago

PLEASE HELP ME ?!!!!!

cluponka [151]

Answer:

b & c for sure

Step-by-step explanation:

............

8 0

3 years ago

(5x^2−3x−2)−(−2x^2−x+10)<br> Express the answer in standard form

masha68 [24]

Answer:

7x2−2x−12

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Mikhael is a technical writer. He is paid $2.95 a page. A normal job has 600 pages and requires about 225 words per page. Mikhae

Sedaia [141]

Answer:

$1770 for 25 hours

Step-by-step explanation:

600 × 225 = 135000

135000 ÷ 90 = 1500 min

1500min=25 hours

$2.95×600= $1770

7 0

2 years ago