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3 years ago

What is the measurement of the missing angle for the following?

Mathematics

1 answer:

Sav [38]3 years ago

5 0

Answer:

the answer is 38

Step-by-step explanation:

103 + 39 + 38= 180, the degree of a triangle

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Find the mean and standard deviation for the set of data.

dem82 [27]

The mean and standard deviation for the set of data will be 16 and 5.87. Then the correct option is A.

<h3>What is a standard deviation?</h3>

It is the measure of the dispersion of statistical data. Dispersion is the extent to which the value is in a variation.

The set of data is given below.

16, 22, 8, 5, 20, 18, 14, 17, 24

The mean of the data set will be

μ = (16 + 22 + 8 + 5 + 20 + 18 + 14 + 17 + 24) / 9

μ = 144 / 9

μ = 16

Then the standard deviation of the data set will be

$\rm \sigma = \sqrt{\dfrac{\Sigma (x_i - \mu)^2}{n}} \\\sigma = \sqrt{\dfrac{(16 - 16)^2 +(22 - 16)^2 + (8-16)^2 + ......+(24-16)^2 }{9}} \\\sigma = \sqrt{\dfrac{310}{9}}\\$

Simplify the expression further, then we have

σ = √34.44

σ = 5.87

The mean and standard deviation for the set of data will be 16 and 5.87.

Then the correct option is A.

More about the standard deviation link is given below.

brainly.com/question/12402189

#SPJ1

3 0

1 year ago

You can upgrade lighting at your factory to LED bulbs that coast 6.95 each and last an average of 5 years.

miskamm [114]

Answer:

$200

Step-by-step explanation:

Here is the full question

You can upgrade lighting at your factory to LED bulbs that cost $6.95 each and last an average of 5 years. It costs $3 in labor to change a bulb. Over a 10-year period, about how much will it cost per year to install LED bulbs in 100 lamps and change the bulbs when they burn out?

in 10 years, the bulbs would be changed twice

Total cost incurred per bulb in 10 years = (6.95 + $3) x 2 = $19.90

Since there are 100 bulbs, total cost incurred would be - $19.90 x 100 = $1990

Cost per year = $1990 / (6.95 + $3) = $200

3 0

3 years ago

Drag and drop the constant of proportionality into the box to match the table. If the table is not proportional, drag and drop "

podryga [215]

Option B: 3 is the right answer

Step-by-step explanation:

If y varies directly as x, it can be expressed as:

y ∝ x

$y= kx$

If the values in table are directly proportional then the value of k should be same for all pairs.

$k = \frac{y}{x}\\k = \frac{6}{2} = \frac{9}{3} = \frac{12}{4} = \frac{15}{5} = 3$

the table is directly proportional and the value of k is 3

Hence,

Option B: 3 is the right answer

Keywords: Proportion, variation

Learn more about proportion at:

#LearnwithBrainly

4 0

3 years ago

A number triple and tripped again is 729 what is the number show workings

kiruha [24]

Tripple then tripple means times 3 times 3
x times 3 times 3=x times 9
x time 9=729
divide both sides by 9
x=81

the numbe s 81

6 0

4 years ago

Read 2 more answers

Housing expenses are commonly referred to as PITI. What does PITI stand for?

elena-s [515]

PITI: principal, interest, taxes, and insurance

6 0

3 years ago

What is the measurement of the missing angle for the following?​

What is the measurement of the missing angle for the following?