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garik1379 [7]
3 years ago
5

Evaluate the expression for the given value of the variable. the sum of y/3 and 4y/9 when y =18

Mathematics
1 answer:
Lisa [10]3 years ago
4 0
Y/3=6 and 4y/9=8 and since it asks for the sum the ANSWER IS 14!
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2. A boat in calm seas travels in a straight line and ends the trip 16 km west and 50 km north of its original position. Find th
PSYCHO15rus [73]

Answer:

107.8°

Step-by-step explanation:

Here we use the inverse tangent function to determine the angle (direction) of the boat.

"16 km west and 50 km north" places  us in Quadrant III.  One way in which to determine the angle in question, measured from the positive x-axis, is to find the value of arctan 50/16 and then subtract this angle from 180° (or from π radians).

This results in    π - arctan 50/16, or

                          π - 1.26 radians, or 180° - 72.2°, or 107.8°

The boat's direction is 107.8° as measured counterclockwise from the positive x-axis (that is, from ∅ = 0°).

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4 years ago
I am trying to keep up with math so can you help me
Liono4ka [1.6K]

Answer: Sure what you having trouble with?

Step-by-step explanation:

5 0
3 years ago
What is the greatest common factor for 840 and 440
Leni [432]
.........................It is 40.
5 0
3 years ago
What is the slope of the line that passes through the points (-2.5) and (1, 4)
Zinaida [17]

Answer:

-2/1

Step-by-step explanation:

hope this helps

5 0
3 years ago
The mean value of 8 numbers is 17. Three of these numbers (9, 11, and 20) are discarded.
Viktor [21]

Answer:

19.2

Step-by-step explanation:

You get the mean of a set of numbers by adding them and dividing the sum by how many numbers there are.  In this case, you don't know what the individual 8 numbers are, but you can find out what they add up to.

Mean = (sum) / 8

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17 x 8 = sum

136 = sum

Now take out the numbers 9, 11, 20, which reduces the sum by 40.  There are 5 numbers left and they add up to 136 - 40 = 96.

The new mean is 96 / 5 = 19.2

3 0
4 years ago
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