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guajiro [1.7K]
3 years ago
13

Of the town's 42 firefighters, 16 volunteered for the special rescue team. Express the portion who did not volunteer.

Mathematics
1 answer:
Doss [256]3 years ago
8 0
42 firefighters in total.

16 volunteered for the special rescue team.

n + 16 = 42

or it could be this way:

42 - 16 = n
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AD is a diameter of a circle and AB is a chord. If AD=34cm, AB=30cm, the distance of AB from the centre of the circle is :
e-lub [12.9K]

Answer:

   The distance is 8 cm

Step-by-step explanation:

The chord and the diameter form one leg and the hypotenuse of a right triangle. The other leg, BD, has length ...

  BD² +AB² = AD²

  BD² = AD² -AB² = 34² -30² = 256

  BD = √256 = 16

The segment from the center of the circle to the midpoint of the chord is the midline of triangle ABD, so is half the length of BD.

  distance from AB to the center = 16/2 = 8 . . . cm

7 0
3 years ago
Simplify 12cm to 2.5mm
julia-pushkina [17]

Given:

12cm to 2.5mm

To find:

The simplified for of given statement.

Solution:

We know that,

1 cm = 10 mm

12 cm =120mm

We have,

12cm to 2.5mm

It can be written as

\dfrac{12\ cm}{2.5\ mm}=\dfrac{120\ mm}{2.5 mm}

\dfrac{12\ cm}{2.5\ mm}=\dfrac{120}{2.5}

\dfrac{12\ cm}{2.5\ mm}=48

Therefore, the value of 12 cm to 2.5 mm is 48 or 48:1.

7 0
3 years ago
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Klio2033 [76]
2/15

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Given A(2,14), B(2,3), C(4,2) and D(14,2) what about AB?
stepan [7]
Answer - 11

I’m assuming you’re trying to find the line AB (basically the distance between point A and B). If that’s the case, since they both have the same x vale, subtract their y values. 14-3 gives you 11, which is the length of line AB
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the answer is: 3.1666666667

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