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asambeis [7]
3 years ago
11

How do i find x?

Mathematics
1 answer:
lina2011 [118]3 years ago
8 0

Answer:

<h3>   To find x you need to divide polygon into triangles</h3><h3>The formula : "the sum of exterior angles=360°" is false for concaved polygons</h3>

Step-by-step explanation:

α = 180° - 135° = 45°

β = 180° - 120° = 60°

γ = 180° - 60° = 120°

δ = 180° - x

ε = 180° - 80° = 100°

If we divide the pentagon into five triangles then:

5•180° = α + β + γ + δ + ε + 4x

900° = 45° + 60° + 120° + x + 100° + 4x

900° = 325° + 5x

5x = 575°

x = 115°

60° + 120° + 135° + 80° + 115° = 510° ≠ 360°

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Identify the level of measurement of the data, and explain what is wrong with the given calculation.In a set of​ data, mood leve
JulijaS [17]

Answer:

Level of measurement=ordinal level

Average mean cannot be calculated for ordinal type of data.

Step-by-step explanation:

The level of measurement for mood levels is ordinal level because there is ordering in the data. It means that 0,1,2 represents the ranking of mood level from bad to good.

Furthermore, the average calculated for mood level 0.9 doesn't meaningfully represents the data. The average can't be interpreted in the context.

6 0
3 years ago
A five-year prospective cohort study has just been completed. The study was designed to assess the association between supplemen
Sholpan [36]

Answer:

Assessing the association between supplemental vitamin A exposure and mortality and morbidity for measles:

Regarding the relative risk, the correct statement is:

a. Exposure to vitamin A appears to protect against morbidity and mortality for measles.

Step-by-step explanation:

Relative risk for incidence of measles = 0.75

Relative risk for measles mortality = 0.5

Relative risk for mortality and morbidity for measles = 0.375 (0.75 * 0.5)

The combined relative risk is less than 50%

The association is weak because RR is less than 1.

Therefore, there is no association between supplemental vitamin A exposure and mortality and morbidity for measles.

6 0
3 years ago
Find the slope of the line​
Sergio039 [100]

Answer:

A) 2

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
I need to find x. It wants me to find the indicated angle measure.
Nataliya [291]

Answer:

x=27

Step-by-step explanation:

(2x-18)+(4x)=180 bc its a straight line

simplify

6x-18=180

-18       -18

6x=162

divide

x=27

5 0
3 years ago
Read 2 more answers
A metalworker has a metal alloy that is 25% copper and another alloy that is 60% copper.How many kilograms of each alloy should
Neporo4naja [7]

Answer:

20kg of 25% copper alloy

30kg of 60% copper alloy

Step-by-step explanation:

There are 2 kinds of metal, first metal(A) have 25% copper while the second metal(B) has 60% copper. The metalworker want to create 50kg of metal, which means the total weight of both metals is 50kg (A+B = 50). The metalworker also want the metal made of a 46% which is 23kg(0.25A + 0.6B = 0.46*50). From these sentences, we can derive 2 equations. We can solve this with substitution.

A+B = 50

A= 50-B

Let's put the first equation into the second.

0.25A + 0.6B = 0.46 *50

0.25(50-B) + 0.6B =23

12.5 - 0.25B + 0.6B =23

0.35B=23 -12.5

B= 10.5/ 0.35= 30

Then we can solve A

A= 50-B

A= 50-30

A=20

8 0
3 years ago
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