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pickupchik [31]
3 years ago
5

I need help with these 3 questions ASAP. please give me a step by step explanation.

Mathematics
2 answers:
SOVA2 [1]3 years ago
8 0
For number 2. The pilot flew 4 circuits and in total by the 5th day he flew 14 right?
Alchen [17]3 years ago
4 0

Answer:

1) first term = 2

Step-by-step explanation:

1)  n =14 ;   d = 6 ;  Sum = 574

    Sum =n/2 * (2a + (n-1)d)

     574 = 14/2 * (2a + (14-1) * 6)

     574   = 7 * (2a + 13 * 6)

  574   = 7 * (2a +  78)

   574/ 7 = 2a + 78

     82    = 2a + 78

 82 - 78 = 2a

   4 = 2a

 a = 4/2

a =2

2) No.of circuits on first day = 14 - 12  = 2 circuits

Total by the end of fifth day  = 2 + 5 +8 +11 +14 = 40

3) n = 20 ;   a = 32768

  r = term 2  / term 1 = 16384 / 32768 = 1/2

 nth term = ar^(n-1)

20th term = 32768 * (1/2)^19

                 = 32768 * (1/ 524288)

                 = 32768 / 524288

                  = 1/16

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dybincka [34]
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6 0
3 years ago
3(a+10)=3a+10 find the solution
Vladimir [108]
The answer for ur question is
3(a+10)=3a+10
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20≠0

hope this help




8 0
3 years ago
Find the height of an equilateral triangle with side length 8?
Temka [501]

Answer: 4root3

Step-by-step explanation:The formula for the height of an equilateral triangle is a/2 root 3, where a is the side length. Therefore, we can substitute for 8/2 root three, which simplifies to 4 root 3.

5 0
4 years ago
The sum of two numbers is 35 . the smaller number is 19 less than the larger number. what are the numbers?
madreJ [45]
Let the smaller number be x and the larger be (x+19)
x+x+19=35
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          x=8
x+19=27

the numbers are 8 and 27.
7 0
3 years ago
A person can read 24 pages of a book in
Maru [420]

Answer:

72

Step-by-step explanation:

A person can read 24 pages in 1/3 hour.  There are 3 * 1/3 hours in 1 hour.

 

So, the person can read 24 * 3 = 72 pages in one hour.

4 0
3 years ago
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