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konstantin123 [22]
2 years ago
13

A random survey of 75 seventh graders at Cedar Middle School showed that 37 of them do volunteer work. Use these results to pred

ict the approximate number of students who do volunteer work out of the 500 seventh graders at the school. Round to the nearest whole number.
Mathematics
1 answer:
Nadusha1986 [10]2 years ago
8 0

Answer:

247 students

Step-by-step explanation:

37/75 = .49333...

so you multiply the 500 by .49333... and get

246.666

round up and get 247

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For every pound a company spends on advertising, it spends 43 pence
irakobra [83]

Answer:

20:9

Step-by-step explanation:

8 0
2 years ago
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
2 years ago
Solve 7 3/4- 5 5/4=
Kaylis [27]

Hey!

----------------------------------------------

Solution:

(5/4 = 1 1/4) and (1 1/4 + 6 = 6 1/4)

= 7 3/4 - 6 1/4 (5/4 = 1 1/4)

= 1 2/4 or 1 1/2

----------------------------------------------

Answer:

1 2/4 or 1 1/2

----------------------------------------------

Hope This Helped! Good Luck!

8 0
3 years ago
Can anyone explain how you graph things for example, like y=x-4 how would you graph that
Savatey [412]

Answer:

In basicallity if a question such as this pops up, the correct way to go would first be to graph this. y=x-4 would be equivalent to x=4.

My paper work is below:

y = x - 4

0 = x - 4

-x = -4

x = 4

Hope this helped..

8 0
2 years ago
Each crate holds 25 reusable water bottles. Each crate costs $45. How much should the track team charge for each water bottle to
Reptile [31]

Answer:

$ 9 each bottle

Step-by-step explanation:

1 crate  = $45

1 crate  = 25 bottles

if we want to earn $180 per crate , we have to add this value to the $45

45 + 180 = 225

if the value of the box to win $180 is $225, we have to divide the new value by 25 (number of bottles) and we will have what we will have to charge each bottle

225/25 = 9

we have to charge $ 9 each bottle to earn $ 180 per crate

7 0
3 years ago
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