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Ipatiy [6.2K]
3 years ago
9

As part of a class project, a university student surveyed the students in the cafeteria lunch line to look for a relationship be

tween eye color and
hair color among students. The table below contains the results of the survey.
Hair Color
Blue
Eye Color
Gray Green Brown Marginal Totals
5 21 10
78
Blond
42
Red
12
22
19
12
65
Brown
22
5
12
34
73
Black
9
3
11
64
87
Marginal Totals
85
35
63
120
303
From the sample population of students with blond hair, what is the approximate value of the relative frequency of students with green eyes?

Mathematics
1 answer:
Musya8 [376]3 years ago
6 0

Answer:

27%

Step-by-step explanation:

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If sine theta equals three over four, what are the values of cos θ and tan θ?
ratelena [41]

Answer:

In words, Cosine theta equals plus or minus square root of seven over 4,tangent theta equals plus or minus  three over root seven

Step-by-step explanation:

Given that sin ∅ =3/4 It means the ratio of the opposite side to the hypotenuse side is 3:4.

Using the Pythagoras theorem we can calculate the hypotenuse adjacent as follows.

a²+b²=c²

a²=c²-b²

a²=4²-3²

a²=16-9

a²=7

a=√7

Then Cos ∅= opposite/ adjacent

=√7/4

Then Tan ∅ = opposite/adjacent

=3/√7

In words, Cosine theta equals plus or minus square root of seven over 4,tangent theta equals plus or minus  three over root seven.

7 0
3 years ago
Find the value of f(7) if f(x) = x^2 - 8x + 2
S_A_V [24]

Answer:

-5

Step-by-step explanation:

5 0
2 years ago
Find the value of each expression in simplest form <br> 1 2/3 + 2 3/4
Kruka [31]

Answer:

The answer is 4 5/12

Step-by-step explanation:

5/3 + 11/4

=5x4  -  3x4 +  11x3  -  4x3

=20/12 + 33/12

=53/12

Simplified

= 4 5/12

Hope this helps. :D

7 0
2 years ago
What x value solves this equation? 3x-5=1
horrorfan [7]

Answer:

x=2

Step-by-step explanation:

Add 5 to each side.

3x-5+5=1+5

3x=6

Divide each side by 3.

Your answer would be x=2.

3 0
3 years ago
Read 2 more answers
The amount after 8years will be what
patriot [66]
P=5000
t=8
r=7%=0.07
n=4
Now all of this have to be substituted to the formula
A=5000(1+0.07/4)^(4*8)=5000(1+0.07/4)³²=8711.07
8 0
3 years ago
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