Simplify. y - 2/3/y + 1/5

What is 1/8 1/4 3/8 1/2 5/8 3/4 7/8 all together.

LiRa [457]

Answer: If you want me to add the fractions it is 7/2 or 3.5

7 0

3 years ago

The distribution of the scores on a certain exam is N(40,5), which means that the exam scores are Normally distributed with a

katen-ka-za [31]

Answer:

Step-by-step explanation:

Let x represent the random variable representing the scores in the exam. Given that the scores are normally distributed with a mean of 40 and a standard deviation of 5, the diagram representing the curve and the position of the mean, the mean plus or minus one standard deviation, the mean plus or minus two standard deviations, and the mean plus or minus three standard deviations is shown in the attached photo

1 standard deviation = 5

2 standard deviations = 2 × 5 = 10

3 standard deviations = 3 × 5 = 15

1 standard deviation from the mean lies between (40 - 5) and (40 + 5)

2 standard deviations from the mean lies between (40 - 10) and (40 + 10)

3 standard deviations from the mean lies between (40 - 15) and (40 + 15)

b) We would apply the probability for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = sample mean

µ = population mean

σ = standard deviation

From the information given,

µ = 40

σ = 5

the probability that a randomly selected score will be greater than 50 is expressed as

P(x > 50) = 1 - P( ≤ x 50)

For x = 50,

z = (50 - 40)/5 = 2

Looking at the normal distribution table, the probability corresponding to the z score is 0.98

P(x > 50) = 1 - 0.98 = 0.02

7 0

3 years ago

BRAINLIESTT ASAP! PLEASE HELP ME :) thanks!!

Paraphin [41]

Answer:

third option

Step-by-step explanation:

angle 1

measure of angle 1 is diagonal to 45, theyre congruent angles

so measure of angle 1 is 45

angle 2

the sum of a triangle is 180 degrees

so for measure 2, we add 45 + 59 and we get 104. then we do 180 - 104 and we get 76

so the measure of angle 2 is 76

angle 3

since we know that the measure for angle 1 is 45, we can also solve for the measure of angle 3

to find angle 3, we do 55 + 45 and we get 100

and then you do 180 - 100 and you get 80

so the measure of angle 3 is 80

4 0

3 years ago

Simplify: 6! − 3! 6!(1 − 0.5!) 3!((6x5x4) − 1) 3!(2! − 1) 6!(1 − 2!)

Nikolay [14]

The simplified expression of the complex number 6! - 3! is another complex number 6i(1 - 0.5)

<h3>How to simplify the expression?</h3>

The complex number expression is given a:

6! - 3!

Factor out i from the expression

6! - 3! = i(6 - 3)

Factor out 6 from the expression

6! - 3! = 6i(1 - 0.5)

The above means that the simplified expression of the complex number 6! - 3! is 6i(1 - 0.5)

Read more about complex numbers at:

brainly.com/question/10662770

#SPJ1

6 0

2 years ago

3 + 1/2 (3-x) < -7 Show work please!

slavikrds [6]

x>23 is the correct answer. First you had to subtract by 3 from both sides of equation. And it gave us, $3+\frac{1}{2}(3-x)-3$ . Then simplify, and it gave us, $\frac{1}{2}(3-x)$ . Next, multiply by 2 from both sides of equation, and it gave us, $2*\frac{1}{2}(3-x)$ . Then simplify, and it gave us, $3-x$ . You can also subtract by 3 from both sides of equation, and it gave us, $3-x-3$ . Then simplify, and it gave us, $-x$ . Multiply by -1 from both sides of equation, and it gave us, $(-x)(-1)>(-23)(-1)$ . Finally simplify, and it gave us the answer is x>23 is the right answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie

7 0

4 years ago