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Gennadij [26K]
3 years ago
10

there are 30 students in a class. five of them are randomly selected to form a dance comittee how many different comittees can b

e formed​
Mathematics
2 answers:
Mariulka [41]3 years ago
8 0

Answer:

6

Step-by-step explanation:

30/5 = 6

9966 [12]3 years ago
4 0

Answer:

17100720

Step-by-step explanation:

You would multiply 30x29x28x27x26 since five students are selected.

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A square plot of land has an area of 484m².What is the perimeter​
harina [27]

Answer:

Perimeter: 88m

Step-by-step explanation:

Area of the square plot = (Side) X (Side)

And we are given the area is 484m²,

therefore, (Side) X (Side) = 484m²

or,

(Side)² = 484, taking square root on both the sides,

\sqrt{(Side)^{2} } = \sqrt{484}

Side = 22m.

And we know that, perimeter of a square is = 4 X (Side)

Therefore, Perimeter = 4 X 22 = 88m

:-)

3 0
3 years ago
Read 2 more answers
In the data set below, what is the mean absolute deviation?
lbvjy [14]

Add the numbers and divide by 5 to get a mean of 6.4

8 - 6.4 = 1.6

4 - 6.4 = -2.4

7 - 6.4 = 0.6

8 - 6.4 = 1.6

5 - 6.4 = -1.4

Add the absolute value of each: 1.6 + 2.4 + 0.6 + 1.6 + 1.4 = 7.6

Divide by 5 = 1.52

1.5

3 0
2 years ago
what is the perimeter of the triangle. i do not know how to start this problem. any help will be greatly appreciated :))
xz_007 [3.2K]

Given:

Point F,G,H are midpoints of the sides of the triangle CDE.

FG=9,GH=7,CD=24

To find:

The perimeter of the triangle CDE.

Solution:

According to the triangle mid-segment theorem, the length of the mid-segment of a triangle is always half of the base of the triangle.

FG is mid-segment and DE is base. So, by using triangle mid-segment theorem, we get

\dfrac{1}{2}DE=FG

DE=2(FG)

DE=2(9)

DE=18

GH is mid-segment and CE is base. So, by using triangle mid-segment theorem, we get

\dfrac{1}{2}CE=GH

CE=2(GH)

CE=2(7)

CE=14

Now, the perimeter of the triangle CDE is:

Perimeter=CD+DE+CE

Perimeter=24+18+14

Perimeter=56

Therefore, the perimeter of the triangle CDE is 56 units.

7 0
3 years ago
Segment HI has a length of 25.3 inches. It can be mapped to segment GO by a reflection over the x-axis followed by a reflection
OLEGan [10]
25.3, reflections do not change the length of something and if it can be mapped on to it they should be the same
5 0
3 years ago
Read 2 more answers
Given: F(x) = 3x2 + 1, G(x) = 2x - 3, H(x) = x<br><br> F(-2) =
Naddik [55]

Answer:

Use the given functions to set up and simplify:

F(−2) and that equals to 13

Step-by-step explanation:

So, therefore, your answer to the problem is 13.

4 0
3 years ago
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