**Answer:**

$4870

**Step-by-step explanation:**

1,750+380=2130

7000-2130=4870

Hope this helps; have a great day :)

Problem 13

You are located at the origin (0,0). If you face directly north and turn at a clockwise angle 270 degrees, then you'll end up facing (-5,0). So this is the bearing.

A bearing of 270 degrees is the same as writing "N 90° W". The notation "N 90° W" means "start looking north, then turn 90 degrees to the west". An alternative notation is "S 90° W" telling the reader "start facing south, then turn 90 degrees toward the west"

<h3>Answer: Choice B) 270°; N 90° W or S 90° W</h3>

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Problem 14

Again start at the origin which is where you are located. Face directly north and turn 180 degrees clockwise until you are facing directly south. You'll be looking at the location (0,-6). Therefore the bearing is 180 degrees.

This is the same as saying "S 0° E" which says "start facing south, turn 0 degrees east". It is also the same as saying "S 0° W" meaning "Start facing south and turn 0 degrees west"

<h3>Answer: Choice B) 180°; S 0° W or S 0° E</h3>

Fraction of students taking mandarin: 3/40

Hope it helps.

We have to find how much time will be consumed if both John and Matt fill the pool together and show the steps to reach at the answer.

**Solution:**John fill the pool in 5 hours. This means in 1 hour John fills

part of the pool. Matt fills the pool in 10 hours. This means in 1 hour Matt fill

part of the pool.

**If they both work together:**Portion of the pool filled in 1 hour =

Next we can use proportion to solve this problem.

3/10 portion of the pool is filled in 1 hour.

3/10 of the pool is filled in time ⇒ 1 hour

Multiplying both sides by 10/3 we get

3/10 x 10/3 of the pool in time = 1 x 10/3

**1 pool is filled in time = 10/3 hours**This means, if both John and Matt fill the pool together they will take 10/3 hours which is

**3 hours and 20 minutes** to fill the pool.

**A shortcut to solve such questions is:**Time taken to fill the pool = (Product of individual times)/(Sum of individual times)

Time taken to fill the pool =

This results in the same answer as we achieved above.

1/4 is the answer. why? because there focusing on that part