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makkiz [27]
3 years ago
10

The points (-1, 5) and (7, r) lie on a line with slope 5/4 Find the missing coordinate r.

Mathematics
1 answer:
Zanzabum3 years ago
5 0

Answer:

15

Step-by-step explanation:

7-(-1) is 8

8 divided by 4 (x or “run” of slope) is two

Two times five (y/rise of slope) is ten

5 (from original point -1,5) plus 10 is 15

(7,15)

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How many sequences of 0s and 1s of length 19 are there that begin with a 0, end with a 0, contain no two consecutive 0s, and con
sladkih [1.3K]

65 sequences.

Lets solve the problem,

The last term is 0.

To form the first 18 terms, we must combine the following two sequences:

0-1 and 0-1-1

Any combination of these two sequences will yield a valid case in which no two 0's and no three 1's are adjacent

So we will combine identical 2-term sequences with identical 3-term sequences to yield a total of 18 terms, we get:

2x + 3y = 18

Case 1: x=9 and y=0

Number of ways to arrange 9 identical 2-term sequences = 1

Case 2: x=6 and y=2

Number of ways to arrange 6 identical 2-term sequences and 2 identical 3-term sequences =8!6!2!=28=8!6!2!=28

Case 3: x=3 and y=4

Number of ways to arrange 3 identical 2-term sequences and 4 identical 3-term sequences =7!3!4!=35=7!3!4!=35

Case 4: x=0 and y=6

Number of ways to arrange 6 identical 3-term sequences = 1

Total ways = Case 1 + Case 2 + Case 3 + Case 4 = 1 + 28 + 35 + 1 = 65

Hence the number of sequences are 65.

Learn more about Sequences on:

brainly.com/question/12246947

#SPJ4

8 0
2 years ago
Numbers greater than 20 that have 9 as a factor
riadik2000 [5.3K]
80 has 9 factor because 1×80=80. 2×40-80. 4×20=80. 5×16=80. 8×10=80 . 10 ×8=80. 20×4=80. 40×2=80. and 80×1=80 80 is greater than 20 and that has 9 factors
4 0
3 years ago
Which is a line of symmetry
tensa zangetsu [6.8K]

Answer:

is there a pic?

Step-by-step explanation:

we are able to see

4 0
2 years ago
The sum of three consecutive odd numbers in 177. What is the largest of the three numbers?
Vikentia [17]

Answer:

1st odd  = 57

2nd odd  = 59

3rd odd  = 61

Step-by-step explanation:

Suppose the numbers to be:

1st odd = x -2

2nd odd = x

3rd odd = x +2

Now according to given conditions:

1st odd + 2nd odd + 3rd odd = 177

x - 2 + x +x + 2 = 177

By add -2 and + 2 will be cancelled

Adding all x

3x = 177

Dividing both sides by 3 we get

x = 177 / 3

x = 59

Now putting x = 59 to get three consecutive odds:

1st odd = x -2 = 59 - 2 = 57

2nd odd = x = 59

3rd odd = x +2 = 59 + 2 = 61

Proof:

1st odd + 2nd odd + 3rd odd = 177

57 + 59 + 61 = 177

177 = 177

hence proved

I hope it will help you!

6 0
3 years ago
Read 2 more answers
(3 - 91i) + (67) =<br> Express your answer in the form (a - bi).
victus00 [196]

9514 1404 393

Answer:

  70 -91i

Step-by-step explanation:

Collect terms the same way you would if i were a variable.

  (3 -91i) +67 = (3 +67) -91i = 70 -91i

6 0
3 years ago
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