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ryzh [129]
3 years ago
14

Find all the factors of 38,39 and 40 do they have any factors in common explain how you can tell if some numbers have factors in

commas without finding the factor
Mathematics
1 answer:
zvonat [6]3 years ago
6 0

Answer:

38= 1, 2, 19 and 38

39= 1,3, 13 and 39

40= 1,2,4,5,8,10,20 and 40

common factors is 1

to know the factors in commas without finding the factor is to simply divide the number by each factor gotten, take for example i have 38 as the number and i have gotten 1, 2.

38 divided by 1 equals 38

38 divided by 2 equals 19

so they are the factors

Step-by-step explanation:

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A 12-meter ladder leans against a building forming a 30° angle with the building.
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Answer:

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Without loss of generality (WLOG)

The wall is on the right. The ladder leans against the wall

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Option 1:

 

The ladder, ground and wall form a right triangle.

 

The hypotenuse (ladder) is 14 feet.

 

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The top of the ladder to the ground represents

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    = sqrt(16)* sqrt(10)

 

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    = 4 * 3.16227766016838....

 

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----------------------------------------------

Option #2: using trig

 

With respect to the angle formed by the bottom of the

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  cos T = 6/14 = 3/7  

 T = inverse-cosine(3/7) = 64.623006647 degrees

 

 sin(64.623006647) = h/14

 

 h = 14*sin(64.62300647) = 12.6491106 <--- same answer                        

hope this helps

Step-by-step explanation:

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Answer:

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