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2 years ago

A rectangle has a length of 11.8 centimeters and a width of 8.2 centimeters.

Mathematics

1 answer:

kodGreya [7K]2 years ago

5 0

Answer:

I think it is 96.76 cm

Step-by-step explanation:

Correct me if I am wrong

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Solve the following inequality. 4x-1> -9

pychu [463]

Solve inequalities the way you would solve an equation except for this rule-
If you multiply or divide a negative, the sign must be switched.

Do the inverse of everything like in an equation-
4x-1> -9
+1 +1 (Add 1)
4x>-8
/4 /4 (Divide 4)
You are not dividing a negative number from another number. So keep the sign.
x>-2
Your answer is C.

3 0

3 years ago

Name 2 fractions that are greater than 1/2. Use benchmark fractions to help

Fynjy0 [20]

Answer:

2/3, 3/4, 5/6, 7/8, 8/9, 9/10, etc.

Step-by-step explanation:

1/2 is smaller than 1/3, which is smaller than 3/4, which is in turn smaller than 5/6, and so on.

6 0

2 years ago

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.5 parts

DochEvi [55]

Answer:

We accept H₀ with the information we have, we can say level of ozone is under the major limit

Step-by-step explanation:

Normal Distribution

population mean = μ₀ = 7.5 ppm

Sample size n = 16 df = n - 1 df = 15

Sample mean = μ = 7.8 ppm

Sample standard deviation = s = 0.8

We want to find out if ozono level, is above normal level that is bigger than 7.5

1.- Hypothesis Test

null hypothesis H₀ μ₀ = 7.5

alternative hypothesis Hₐ μ₀ > 7.5

2.-Significance level α = 0.01 we will develop one tail-test (right)

then for df = 15 and α = 0,01 from t -student table we get

t(c) = 2.624

3.-Compute t(s)

t(s) = ( μ - μ₀ ) / s /√n ⇒ t(s) = ( 7.8 - 7.5 )*4/0.8

t(s) = 0.3*4/0.8

t(s) = 1.5

4.-Compare t(s) and t(c)

t(s) < t(c) 1.5 < 2.64

Then t(s) is inside the acceptance region. We accept H₀

7 0

2 years ago

Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and stand

Black_prince [1.1K]

Answer:

Step-by-step explanation:

The data is written wrongly. The correct data is:

42, 40, 38, 31, 22, 19, 17, 16, 15.9, 15.0

Range = largest value - smallest value

Range = 42 - 15 = 27

n = 10

The mean of the set of data given is

Mean = (42 + 40 + 38 + 31 + 22 + 19 + 17 + 16 + 15.9 + 15.0)/10 = 25.59

Standard deviation = √(summation(x - mean)²/n

Variance = Summation(x - mean)²/n =

Summation(x - mean)² = (42 - 25.59)^2 + (40 - 25.59)^2 + (38 - 25.59)^2 + (31 - 25.59)^2 + (22 - 25.59)^2 + (19 - 25.59)^2 + (17 - 25.59)^2 + (16 - 25.59)^2 + (15.9 - 25.59)^2 + (15.0 - 25.59)^2 = 1088.329

Variance = 1088.329/10 = 108.8329

Standard deviation = √variance = √(108.8329 = 10.43

8 0

2 years ago

8 people are in line a family with a wife and husband and 3 children cut in line then 4 more people cut in line then the family

SVETLANKA909090 [29]

Answer:

17 people

Step-by-step explanation:

8 people are in line a family with a wife and husband and 3 children cut in line then 4 more people cut in line then the family with 3 children cut in line in front again how many people are there?

8 (the begining) + 5 (wife husband & 3 children) + 4 ( the four more people)= 17 (donʻt add the family w/ 3 children again because they were already in line.)

8 0

2 years ago