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kolbaska11 [484]
3 years ago
14

(: Please answer both questions :)First person gets 50 points!

Mathematics
1 answer:
Lemur [1.5K]3 years ago
4 0

Answer:

1. 1350

2.2700

Step-by-step explanation:

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If you're good at trigonometry please help me with question nine a and b and show full working out tyyyyyyyy ;)
Mariulka [41]

Problem 9, part a)

Compass bearings always have north as the starting point. This is where 0 degrees is situated, and 360 degrees as well. As the bearing angle increases, you'll turn to the right toward the eastward direction. Effectively you're sweeping out a clockwise rotation. The bearing 322 degrees is in a northwest position as the diagram shows (place the ship at the bottom right corner of the triangle). The bottom right acute angle of the triangle is 322 - 270 = 52 degrees. This is the reference angle we'll use for finding the distance d.

With respect to the reference angle of 52 degrees, the side 18.5 is the opposite side and d is the adjacent side. Use the tangent ratio to get...

tan(angle) = opposite/adjacent

tan(52) = 18.5/d

d*tan(52) = 18.5

d = 18.5/tan(52)

d = 14.4537840903742

The approximate value of d is 14.4537840903742 km

This rounds to 14.5 when rounding to one decimal place.

<h3>Answer: 14.5 km</h3>

=======================================================

Problem 9, part b)

Recall that

distance = rate*time

where "rate" is another term for "speed" or "velocity"

We can solve this for the time to get

time = distance/rate

------

We found the distance back in part a) above. We are given the rate of 48 km/h

So,

time = distance/rate

time = 14.4537840903742/48

time = 0.3011205018828

This is the time it takes in hours. Multiply by 60 to convert to minutes

0.3011205018828 hours = 60*0.3011205018828 = 18.067230112968 minutes

This rounds to the whole number 18

<h3>Answer: 18 minutes</h3>
5 0
3 years ago
A pair of vertical angles has measures (2y + 5) and (4y) What is the value of y?
iogann1982 [59]

Answer:

Vertical angles are angles that are opposite each other when two lines intersect each other. And they are always equal.

==> 2y +5 = 4y

==> 4y - 2y = 5

==> 2y = 5

==> y = \frac{5}{2}

Option D

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Answer:

i thinkkk 40

if not my badd

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3 years ago
Given the sequence: 8, 4, 0, -4,-8, -12, ...
Zepler [3.9K]

Answer:

It is subtracting 4 each time, if it were to go on it would go -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 etc

Step-by-step explanation:

3 0
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How is a dollar hdhxnndnxnxnrxncnbcb thxjjchxnfnxbc
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Answer:

uhm idk..... it's 4 quarters, or 100 pennies, or 10 dimes, or 20 nickels

i don't know what ur asking sorryyyy

Step-by-step explanation:

8 0
3 years ago
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