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diamong [38]
3 years ago
15

Complete the following addition exercises.

Mathematics
2 answers:
Andru [333]3 years ago
7 0

10

11

10

14

17

9

11

10

17

10

13

12

14

3

9

8

6

11

14

14

16

21

Sorry if some are wrong! :)

Inga [223]3 years ago
3 0

ANSWER:

10

11

10

14

17

9

11

10

17

10

13

12

14

3

9

8

6

8

6

11

14

14

16

21

♥Hope this helps!♥

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PLEASE HELP ME If 0 < z ≤ 90 and sin(9z − 1) = cos(6z + 1), what is the value of z? z = 3 z = 4 z = 5 z = 6
Burka [1]

Answer:

  z = 6

Step-by-step explanation:

We know that ...

  sin(x) = cos(90 -x)

Substituting (9z-1) for x, this is ...

  sin(9z -1) = cos(90 -(9z -1))

But we also are given ...

  sin(9z -1) = cos(6z +1)

Equating the arguments of the cosine function, we have ...

  90 -(9z -1) = 6z +1

  90 = 15z . . . . . . . . . add (9z-1) to both sides

  6 = z . . . . . . . . . . . . divide by 15

_____

<em>Comment on the graph</em>

The attached graph shows 5 solutions in the domain of interest. These come from the fact that the relation we used is actually ...

  sin(x) = cos(90 +360k -x)  . . . . .  for any integer k

Then the above equation becomes ...

  90 +360k = 15z

  6 +24k = z . . . . . . . . . for any integer k

The sine and cosine functions also enjoy the relation ...

  sin(x) = cos(x -90)

  sin(9z -1) = cos(9z -1 -90) = cos(6z +1)

  3z = 92 . . . . . equating arguments of cos( ) and adding 91-6z

  z = 30 2/3

6 0
3 years ago
I don’t know how to do this
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You need to add the problem you need help with....
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Please quickly! Out of 5,500 people who attended the football game, fifty-six percent were rooting for the home team. How many p
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A motorboat left a harbor and traveled to an island at an average rate of 10 knots. The average speed on the return trip was 10
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Answer:

A on edu2020

Step-by-step explanation:

5 0
3 years ago
Please Help extra points
Molodets [167]
<h2>A. $123.51</h2><h2 />

1^{st}: $24.48 per year + price * 0.85

2^{nd}: $36.83 per year + price * 0.75

Substitute each value into both equations as price.

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129.4625

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