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rodikova [14]
3 years ago
12

Plz help,.................refresh the page before u answer\

Mathematics
1 answer:
Soloha48 [4]3 years ago
3 0
Composite is a number that is NOT prime. So we want to find an odd perfect square that IS prime to be a counterexample.
√36 = Not odd
√49 = 7 Factors only 1 * 7  so it is prime
√81 = 9 Factors 1, 3, 9 composite
√225 = 15 Factors 1,3, 5,9,15, 25, 45, 75, 225 composite

Counterexample for 2∧n - 1 Is prime
2^6 - 1 = 64 - 1 = 63 NOT PRIME Factors are: 1, 3, 7, 9,21, 63
2^5 - 1 = 32 - 1 = 31 Prime
2^3 - 1 = 8 - 1 = 7 Prime
2^2 - 1 = 4 - 1 = 3 Prime
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GaryK [48]

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6 0
2 years ago
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The base of a square measures 7 cm, and its height measures 6 centimeters. How tall is your area?
Alexxandr [17]

Answer:

42cm^{2}

Step-by-step explanation:

In order to find the area of a square you take the base and multiply it by the height.

Base x Height = Area

In this case you have 7cm as the base and 6cm as the height.

All you have to do after that is multiply the two together.

Make sure that you remember to put the unit (cm) and make sure that it is cm^{2} because some teachers are uptight about that stuff.

Hope this helped!

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5 0
3 years ago
Question: When you do adding fractions, do you have to find a common demoniter? *sorry for misspelling*
docker41 [41]

Answer: yes when your adding or subtracting fractions you must find the common denominator between the two before you continue.

Step-by-step explanation:

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We keep the first fraction as it is cause it has the denominator 4 and we multiply the second fraction by 2 up and down to get a denominator of 4. The equation becomes 2/4+6/4

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3 years ago
Answer the question in detail !!!​
Vilka [71]

Answer:

ok so this means 2/5 of the plant have germs and

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so 3/5 plants are all good

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so 60% of the plants have germs

Hope This Helps!!!

8 0
2 years ago
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The area of a sphere is      4 pi R² .

Area of the moon  =  (4 pi) (1,738 km)² =

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3 years ago
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