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nevsk [136]
3 years ago
14

The last term of an arithmetic sequence is 14 and the ninth term is -1. Find the first four

Mathematics
1 answer:
Olegator [25]3 years ago
8 0

Answer:

13

Step-by-step explanation:

where n is the number of terms, a1 is the first term and an is the last term. The sum of the first n terms of an arithmetic sequence is called an arithmetic series . Example 1: Find the sum of the first 20 terms of the arithmetic series if a1=5 and a20=62 .An arithmetic sequence is a sequence where the difference between any two consecutive terms is a constant. ... As with any recursive formula, the initial term of the sequence must be given. An explicit formula for an arithmetic sequence with common difference d is given by an=a1+d(n−1) a n = a 1 + d ( n − 1 ) .

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Mixed numbers from 6 to 7, with an interval of 1/5 in between each pair of mixed numbers
Flura [38]
A mixed number is a whole number plus a fraction.
the smallest whole number is 1.
so no mixed number could be lees than 1.

mixed numbers that are 1/5 apart and are between 6 and 7 

1-6/1 or 2-71
3 0
3 years ago
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Give the proportion a/b = c/d<br> Solve for c
dybincka [34]

Answer:

the answer is c = (ad)/b

Step-by-step explanation:

See the picture

5 0
3 years ago
Please please answer this correctly as soon as possible I have to finish the sums by
Helga [31]

There are 20 miles is Sheng from his home.

7 0
3 years ago
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The probability that…. The student is not female or received a degree outside of the field
a_sh-v [17]

Answer:  0.8953 (approximate)

The more accurate value is 0.89528093209023; however, it's not entirely exact either. Round that however you need.

===========================================================

Explanation:

There are 774,517 males and 1,400,843 people who got their degree outside of the field. Add those values

774,517+1,400,843 = 2,175,360

This unfortunately double counts the number of males who got their degree outside of the field (576,228) so we need to subtract that count off

2,175,360 - 576,228 = 1,599,132

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

There are 1,599,132 people who are either

  • A) male
  • B) got their degree outside the field, or,
  • C) both male and got their degree outside the field

This is out of 1,786,179 people total.

We'll divide these two values to get the final answer

(1,599,132)/(1,786,179) = 0.89528093209023

It's not clear how your teacher wants you to round this. If you round it to say 4 decimal places, then you'd get approximately 0.8953

The chances of the student not being a female or receiving their degree outside the field is roughly 89.53%

8 0
2 years ago
25 points and brainliest if it's correct!
aleksandr82 [10.1K]

Answer:

Just substitute each number into the expression:

5(5) - 6(3) + 20(1/4)/4(3)(1/4) = 25 - 18 + 5/3 = 7 + 5/3 = 26/3 or 8 and 2/3.

Step-by-step explanation:

3 0
2 years ago
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