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Svet_ta [14]
2 years ago
12

PLZZ HELP IM IN THE NEED OF HELP LOOK IN THE PICTURE answer all 3 plzzzzz

Mathematics
2 answers:
Verdich [7]2 years ago
4 0
17) 146 min.
18) 5 hrs and 31 min
19) -1/6
vovikov84 [41]2 years ago
3 0
17. 2 hrs and 26 minutes = 120 min + 26 min = 146 minutes

18. 4:14 to 9:45.....5 hrs 31 min

19. 5 1/2 - 4 2/3 =
      11/2 - 14/3 =
       33/6 - 28/6 =
       5/6
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What is the rule for the following sequence: 2, 9, 21, 65
Helga [31]

There is no common ratio or common difference. The first three terms increases more slowly than a cubic, but the last three increase more quickly than the cube of n. The pattern is not obvious to me. When the sequence is cast in recursive terms, you get

... a[n] = (48/13)a[n-2] + (59/39)a[n-1] . . . . a[1] = 2, a[2] = 9

The next term using this rule is 174 34/39, not an integer.

The coefficients p and q for a[n-2] and a[n-1] can be found from

2p+9q=21\\9p+21q=65

_____

Any sequence of 4 numbers can be matched by a polynomial of degree 3 or less. Here, a calculator's polynomial regression function tells us the rule could be

... a[n] = 4.5n³ -24.5n² +49n -27

Using this rule, the next two terms are 168 and 357.

5 0
3 years ago
What is the slope of the line through (-9,6) and (-6,-9)
Juliette [100K]

\text{The slope formula:}\ m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\text{We have:}\\(-9;\ 6)\to x_1=-9;\ y_1=6\\(-6;\ -9)\to x_2=-6;\ y_2=-9\\\\\text{substitute:}\\\\m=\dfrac{-9-6}{-6-(-9)}=\dfrac{-15}{-6+9}=\dfrac{-15}{3}=-5

Answer: m = -5

7 0
3 years ago
The measures of two complementary angles are described by the expression(13y+12) and (20y+12). Find the measures of angles​
Pachacha [2.7K]

Step-by-step explanation:

complementary angles means that both of them together = 90

13y +12 + 20y + 12 = 90

add all y together and numbers together

33y + 24 = 90

solve for y

33y= 66. y= 2

now let's get the measurements of the angles

13(2) + 12= 38

20(2) + 12= 52

8 0
3 years ago
Rachelle has $6.30 in nickels and quarters in her coin purse. The number of nickels is twice the number of quarters. How many co
timurjin [86]

Each group of 2 nickels and 1 quarter has a value of $0.35. Rachelle has $6.30/$0.35 = 18 such groups.

Rachelle has 18 quarters and 36 nickels.

5 0
2 years ago
A car goes from 5m/s to 10m/s in 2 seconds. Find the acceleration.
tangare [24]

Answer:2.5 m/s

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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