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serious [3.7K]
4 years ago
12

Helllllpppppppppppppppppp

Mathematics
1 answer:
Bogdan [553]4 years ago
7 0

The sum of the inner angles of a polygon with n sides is 180(n-2)

Since your polygon has 6 sides, the sum of its inner angles has to be

180(6-2) = 180 \cdot 4 = 720

On the other hand, the sum of its inner angles is

75+132+113+108+160+x = 588+x

And it has to be 720, so we have

588+x=720 \iff x = 720-588 = 132

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Sandra bought 30 T-shirts at the clothing store. 20% of the T-shirts were blue and half of the T-shirts were black. How many of
insens350 [35]
So you have 20% of blue and 50% of black.
So you have 70% in total that are both blue and black.
100%- 70%= 30%
So that means 30% were neither blue or black.
Do a proportion
30/100= x/30
30 x 30= 900
900 divided by 100= 9
Answer is 9 shirts are neither blue or black
8 0
4 years ago
In a survey, it was found that the ratio of the people who like modern songs and folk songs is 8:9. Out of which 50 people liked
Elza [17]

Step-by-step explanation:

1) see the attached picture;

2) 120+80=200 (persons).

PS. change the design according to local requirements.

3 0
3 years ago
Read 2 more answers
Cole and his sister chloe are cleaning their house. The house has nine rooms in it. If it take one person about 18 minutes to cl
alex41 [277]

Answer:  Cole and his sister Chloe will take 81 minutes to clean the whole house.


Step-by-step explanation:

Total rooms in the house = 9

Total persons to clean the house = 2 (Cole and his sister Chloe)

Time taken by 1 person to clean one=18 minutes

Time taken by 2 persons to clean one room together=18 divided by 2 = 9 minutes

Time taken by 2 persons to clean 9 rooms (which is the total number of rooms in the house)=9 multiply 9 = 81 minutes

therefore, they will take 81 minutes to clean the whole house.

7 0
3 years ago
Find the slope of the line that passes through (-6,1) and (4,-3)
Aleonysh [2.5K]
Slope\ formula=\frac{rise}{run}=\frac{y_2-y_1}{x_2-x_1}=\\\\\frac{-3-1}{4-(-6)}=\\\\\frac{-4}{10}=\\\\{\boxed{Slope=-\frac{2}{5}}
7 0
3 years ago
5.11.
irinina [24]

Answer:

Following are the response to the given points:

Step-by-step explanation:

For question 5.11:

For point a:

For all the particular circumstances, it was not an appropriate sampling strategy as each normal distribution acquired is at a minimum of 30(5) = 150 or 2.5 hours for a time. Its point is not absolutely fair if it exhibits any spike change for roughly 10 minutes.

For point b:

The problem would be that the process can transition to an in the state in less than half an hour and return to in the state. Thus, each subgroup is a biased selection of the whole element created over the last 2 \frac{1}{2} hours. Another sampling approach is a group.

For question 5.12:

This production method creates 500 pieces each day. A sampling section is selected every half an hour, and the average of five dimensions can be seen in a \bar{x}line graph when 5 parts were achieved.

This is not an appropriate sampling method if the assigned reason leads to a sluggish, prolonged uplift. The difficulty would be that gradual or longer upward drift in the procedure takes or less half an hour then returns to a controlled state. Suppose that a shift of both the detectable size will last hours 2 \frac{1}{2} . An alternative type of analysis should be a random sample of five consecutive pieces created every 2 \frac{1}{2} hour.

7 0
3 years ago
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