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Leviafan [203]
3 years ago
13

-2x+4=15 what is the value of x

Mathematics
1 answer:
kifflom [539]3 years ago
6 0

Answer:

-5½

Step-by-step explanation:

-2x = 11

x = -11/2

x = -5½

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I need help with this
steposvetlana [31]
X=7y-8 because subtract 7y from both sides and then multiply by 1
4 0
3 years ago
The depth of the water at the end of a pier changes periodically along with the movement of tides. On a particular day, low tide
Valentin [98]
Draw a diagram to illustrate the problem as shown in the figure below.

The minimum depth of 2.5 m occurs at 12:00 am and at 12:30 pm.
Therefore the period i0s T= 12.5 hours.
The maximum depth of 5.5 m occurs at 6:15 am and at 6:45 pm. Therefore the period of T = 12.5 hours is confirmed.

The double amplitude is 5.5 - 2.5 = 3 m, therefore the amplitude is a = 1.5 m.
The mean depth is k = (2.5 + 5.5)/2 = 4.0 m

The model for tide depth is
d=-1.5cos( \frac{2 \pi t}{12.5})+4

That is,
d = -1.5 cos(0.5027t) + 4
where 
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t = time, hours

A plot of the function confirms that the model is correct.

8 0
3 years ago
Read 2 more answers
1. Write an equivalent<br> ratio by multiplying:<br> 1<br> -<br><br> 4
ahrayia [7]

Answer:

2 4

- _

8 16

Step-by-step explanation:

1 2

- X -

4 2

Or

1. 4

- X -

4. 4

7 0
3 years ago
Whats the asnwer for this question?
sergij07 [2.7K]

Answer:

C

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Can some one plz Solve this. 5 - 2x &lt; 7.
kow [346]

Answer:

x > 1

Step-by-step explanation:

5 - 2x < 7

-5          - 5

-2x < 2

/-2     /-2

(dividing by negative switches the sign)

x >- 1

5 0
3 years ago
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