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Galina-37 [17]
3 years ago
11

Given 8 students 3 of which are females if 2 students are selected at random without replacement what is the probability that bo

th students are female?
Mathematics
2 answers:
Gre4nikov [31]3 years ago
4 0
3/8

37.5% that they will be fremale
Sedaia [141]3 years ago
4 0
P(1th fem)=3/8
p(2th fem)=2/7
so p(1&2 fem)=3/8.2/7=3/28
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The teacher has 15 gold prize ribbons, 22 blue ribbons, and 5e red ribbons. There are 12 boys and 18 girls in the class. If the
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Answer:

3

Step-by-step explanation:

Given

15 gold ribbons

22 blue ribbons

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Total of 53 + 22 + 15 = 90 ribbons

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If evenly divided, each student will have 90/30 = 3 ribbons

The expression to solve would basically be the amalgamation of what we did above:

(53 + 22 + 15)/(12+18)

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3 years ago
a candy factory has to order boxes for its candy canes if they plan to make 300,000 candy canes and each box can hold 12 candy c
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25,000 boxes should be ordered

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3 years ago
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C

Step-by-step explanation:


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Line segment AB is shown on a coordinate grid: A coordinate grid is shown from positive 6 to negative 6 on the x-axis and from p
serious [3.7K]

Answer:

A′B′ and AB are equal in length.

Step-by-step explanation:

Given that the location of the points are at A(1, 3) and B(5, 3).

Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, rotation, translation and dilation.

Rigid transformation are transformation that preserves the shape and size when performed. Types of rigid transformation are reflection, rotation, translation.

Hence if AB is rotated 270 degrees counterclockwise about the origin to form A′B′, both A′B′ and AB are equal in length because rotation is a rigid transformation.

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Hence if AB is rotated 270 degrees counterclockwise about the origin to form A'(3, -1), B'(3, -5)

AB=\sqrt{(5-1)^2+(3-3)^2} =4\\\\A'B'=\sqrt{(3-3)^2+(-5-(-1))^2}=4,

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3 years ago
Suppose that the prevalence of a certain type of tree allergy is 0.26 in the general population. If 100 people randomly chosen f
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Answer:

0.0906

Step-by-step explanation:

Given that the prevalence of a certain type of tree allergy is 0.26 in the general population

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Here n = 100

Required probability = the probability that exactly 26 of them will have this allergy

=P(x=26)=100C26(0.26)^{26} (1-0,26)^{100-26}\\ =0.09063\\=0.0906

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3 years ago
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