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Ostrovityanka [42]
3 years ago
9

Suppose the depth of the tide in a certain harbor can be modeled by y = 23 - 5 cos (6.), where y is the water depth in fect

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
3 0

Answer:

D

Step-by-step explanation:

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Which expression is equivalent to the following complex fraction?
Sedbober [7]

Answer: the second option is the correct answer

Step-by-step explanation:

The given expression is

[3/(x - 1) - 4]/[2 - 2/(x - 1)

We would simplify the numerator first. The LCM of the numerator is

x - 1. Taking the LCM of the numerator, it becomes

[3 - 4(x - 1)]/(x - 1)

= [3 - 4x + 4]/(x - 1)

= (- 4x + 7)/(x - 1)

We would simplify the denominator. The LCM of the denominator is

x - 1. Taking the LCM of the numerator, it becomes

[2(x - 1) - 2]/(x - 1)

= [2x - 2 - 2]/(x - 1)

= (2x - 4)/(x - 1)

= 2(x - 2)/(x - 1)

The expression becomes

[(- 4x + 7)/(x - 1)]/[ 2(x - 2)/(x - 1)]

= (- 4x + 7)/(x - 1) × (x - 1)/2(x - 2)

(x - 1) cancels out. It becomes

(- 4x + 7) / 2(x - 2)

7 0
3 years ago
Read 2 more answers
URGENT Write the equations of a line parallel to y = -1/3x-4 thru (6,-4)
mars1129 [50]

y=-1/3x-2. Hope this helped! :)

7 0
3 years ago
Read 2 more answers
Area of a circle with a diameter of 8 inches
gregori [183]

Answer:

8 divided by two equals the radius 4

3.14*4^2=50.24

Hope This Helps!!!

7 0
3 years ago
A particular fruit's weights are normally distributed, with a mean of 618 grams and a standard deviation of 24 grams. If you pic
Lorico [155]
Answer: The probability is 0.5136.

To find this probability we have to find the range of the values on the normal distribution table.

First, we need to find the percent for each making z-score.

Lower end: 50/24 = 2.08 = 0.0183

Upper end: 2/24 = 0.08 = 0.5319

Now, that we have the upper and lower ends, we can subtract them to find the difference or the range.  

0.5319 - 0.0183 = 0.5136

There is a 51.36% chance they are in the given range.
3 0
3 years ago
The ratio between the number of red and green marbles in a box is 3:7. How many marbles are in the box if there are 20 fewer red
jeyben [28]

Answer:

50 marbles

Step-by-step explanation: The difference between the ratio of the red and green marbles is 4 units and the number value is 20 so its safe to say that 4 units is equal to 20 and thus one unit is 5 and because of the fact that there is a total of 10 units of marbles in the box according to the ratio, just multiply 5 and 10 which you get 50.

4 units = 20

1 unit = 20÷4 = 5

Total = 10 units

10 unit = 5 ×10 = 50

Ans : 50 marbles

3 0
3 years ago
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