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kumpel [21]
4 years ago
11

Please!! I have to do this by tonight!!

Mathematics
1 answer:
Aneli [31]4 years ago
4 0

Answer:

Prob.3

Denote r: radius of circle O

Formula for calculating AOB sector:

Area = pi*r^2*angle/360

Area = pi*r^2*45/360 = 18 pi

=> r^2 = 18*360/45 = 144

=> r = 12

For prob.4, give it a try, follow the formula I gave. Good luck !

(answer : r = 6)

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The front row in a movie theatre has 23 seats. If you were asked to sit in the seat that occupied the median position, in which
Harrizon [31]

Answer:

12

Step-by-step explanation:

The median is the one in the middle.  For an <u>odd</u> number of seats, average the first and last seat numbers.

(1 + 23) / 2 = 24 / 2 = 12.  That means there will be 11 people on your left and 11 people on your right.

For an even number of seats, the same method doesn't work as well!  If there are 14 seats, for example,  (1 + 14) / 2 = 15 / 2 = 7.5,  and if you sit in "seat" 7 and a half, it will be awkward!

4 0
3 years ago
Read 2 more answers
Which is a factor of x2 + 5x – 24?<br> (x-6)<br> (x + 6)<br> (x-8)<br> (x + 8)
NikAS [45]
(x + 8) would be a factor
4 0
4 years ago
Read 2 more answers
A vegetable garden and surrounding path are shaped like a square that together are 10ft wide. The path is 3ft wide. Find the tot
Alina [70]

Answer:

256

Step-by-step explanation:

since the the path surounds both sides of the garden you have to add 2 x instead of just x

let me show you what i mean. 10=garden width and 3=path width=x

since it is a square, we can calculate the area by taking one side and squaring it so you get (10+2x)^2 which is 16^2 since x is 3, the width of the garden

to do simaler problems just use thei formula (garden length+2path length)^2 or (garden length+2path length)times(garden length+2path length)

5 0
3 years ago
Find the measure of the exterior angle.<br> The measure of the exterior angle of the triangle is
Natalija [7]

Answer:

x =132

Step-by-step explanation:

The exterior angle is equal to the sum of the opposite interior angles

x = 46+86

x =132

8 0
3 years ago
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Construct a frequency distribution and a frequency histogram for the data set using the indicated number of classes. Describe an
elena-s [515]

Answer and Explanation:

Number of classes = 8

    Highest value =2300

  Lowest value = 1250

Class width= highest value – lowest value / number of classes

               = 2300 – 1250/8

                = 131.25 = 132

So, we can write class as 1250+132=1382

Class                                        frequency

1250-1382                                 2

1382-1514                                 3

1514-1646                                 6

1646-1778                                 2

1778-1910                                 3

1910-2042                                 2

2042-2174                                 1

2174-2306                                 1

8 0
3 years ago
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