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Sliva [168]
3 years ago
5

Please help!

Mathematics
1 answer:
Andrei [34K]3 years ago
6 0
According to my calculations the theoretical answer about to be given is number c
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Alex made an eyeglass case and sold it for $12.00. He spent $1.29 on felt and $2.75 on a needle and thread. What was his profit?
madreJ [45]
D because 1.29 plus 2.75 is 4.04(the money that he used to make the case) and subtract that with $12 and you get $7.96 as the profit.
5 0
3 years ago
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A ship leaves port and travels due west for 30 knots, then changes course to S 30° W and travels 50 more knots. Find the bearing
leva [86]

Answer:

  232°

Step-by-step explanation:

There are a couple of ways to find the desired direction. Perhaps the most straightforward is to add up the coordinates of the travel vectors.

  30∠270° +50∠210° = 30(cos(270°), sin(270°)) +50(cos(210°), sin(210°))

  = (0, -30) +(-43.301, -25) = (-43.301, -55)

Then the angle from port is ...

  arctan(-55/-43.301) ≈ 231.79° . . . . . . . 3rd quadrant angle

The bearing of the ship from port is about 232°.

_____

<em>Comment on the problem statement</em>

The term "knot" is conventionally used to indicate a measure of speed (nautical mile per hour), not distance. It is derived from the use of a knotted rope to estimate speed. Knots on the rope were typically 47 ft 3 inches apart. As a measure of distance 30 knots is about 1417.5 feet.

5 0
3 years ago
If I get played 9$ an hour and I work 8:15 a day how much do I get for 5 days
Thepotemich [5.8K]
First of all, 15 minutes is 1/4 of an hour.  So 8:15 is 8.25 hours.

(8.25 hours/day) x ( 9 $/hour) x (5 days) = $371.25


7 0
3 years ago
Read 2 more answers
What is the area of the square below ?
ivolga24 [154]
To find the are of a square, we simply square the value of a side
so..
{5}^{2} = area
Area = 25 square units
6 0
3 years ago
I need help with this is it yes or no?
n200080 [17]

Answer:

No.

Step-by-step explanation:

Try the vertical line test. If the lines intersect or connect at some point, then it's not a function. Do you want to practice with some Ixls to help, or use some images for reference?

4 0
3 years ago
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