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Nonamiya [84]
2 years ago
12

Penny has 139 postcards in her collection. Abe has 48 postcards in his collection. Then Abe gives his collection away. He divide

s it equally among Penny and 7 other friends. How many postcards does Penny have now?
Mathematics
1 answer:
erik [133]2 years ago
5 0

Answer:

145

Step-by-step explanation:

Divide 48 by 7 = 6≅. then add 6 to 139. 145

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You successfully completed statistics, and the Math Department Chair recruited you to be a tutor. It’s day one on the job, and y
zvonat [6]

Answer:

Step-by-step explanation:

Ok, so we have to help your pupil (lets call her Jane) figure out "why researchers should use a random sample to conduct a survey". So, i will list all of the choices.

  • A random sample is likely to avoid bias
  • In a random sample some members of the population are more likely to be selected than others
  • Random samples provide consistency and systematically favor one choice over every other choice in each survey question
  • Random sampling will provide a more representative sample of population
  • Researchers can use a random sample to draw conclusions about the population

Random sampling is used to get the best average, and not favor any one opinion. For example, if you were trying to figure out the daily spending budget of people, you wouldn't just go to the upper clas part with all the rich people, you would survey from all over the town to get results from all kinds of people. So, the answers are:

  • A random sample is likely to avoid bias (because thats exactly what they do)
  • Random sampling will provide a more representative sample of population (because they are designed to do that)
  • Researchers can use a random sample to draw conclusions about the population (thats why they take the samples)

Hope this helps

4 0
3 years ago
Simple Algebra problem. Includes the x and y axis. Also need help finding the perimeter.
Leona [35]

Answer:

31.5cm²

Step-by-step explanation:

area of a triangle =1/2 b h

b= 7cm

h=9cm

1/2×7×9

= 1/2×63

= 31.5cm²

hypotenuse is unknown so,

c²=a²+b²

c²= 7² + 9²

= 49 + 81

c²= 130

c= 11.4cm

perimeter= 7 +9+11.4

=27.4cm

pls note that no unit was stated

3 0
3 years ago
I need help im so confused and its due in 20 minutes
irga5000 [103]

Answer:

C.-2(7+6g)=-14-12g

Hope that helped you:)

Please mark me brainiest

6 0
2 years ago
<img src="https://tex.z-dn.net/?f=7%20-%209w%20%3D%20%20-%2029%20" id="TexFormula1" title="7 - 9w = - 29 " alt="7 - 9w = - 29
Oksana_A [137]
7 - 9w = - 29

Subtract 7 from both sides

- 9w = - 36

Divide by - 9 on both sides

w = 4
5 0
3 years ago
Read 2 more answers
FAHED WANTS TO REPLACE THE WINDOWS IN THE FRONT OF HIS HOUSE. THE FRONT OF HIS HOUSE HAS THREE WINDOWS SHAPED LIKE PARALLELOGRAM
slavikrds [6]
Parallelogram area= base * perpendicular height
Assuming that the perpendicular height is 2 ft:
Area of one window = 3.25 * 2 = 6.50 square feet.

Since there are 3 identical parallelograms the Total Area = 3 * 6.5
= 19.5 square feet.



6 0
2 years ago
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