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labwork [276]
3 years ago
7

A survey asked a group of students to list their eye color. The results of the survey are shown in the graph.

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
7 0

Answer:

b?

Step-by-step explanation:

drek231 [11]3 years ago
3 0
I think the answer is b
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Please answer this question and a are by step explanation
Pavlova-9 [17]

Answer:

3

5

Step-by-step explanation:

the answer is 3 and 5 down up

4 0
3 years ago
Ten people at a party decide to compare ages. Five people are 30 years old, three are 32, one is 31, and one is 65.
horrorfan [7]
Given:
Ten People
5 people = 30 years old
3 people = 32 years old
1 person = 31 years old
1 person = 65 years old

We need to arrange the ages in order from least to greatest.

30, 30, 30, 30, 30, 31, 32, 32, 32, 65 
65 is the outlier. 

A.) mean age without the outlier. count of the numbers : 9
5 x 30 =    150
1 x 31 =      31
3 x 32 =<u>      96</u>
total age  277
÷ # of pax<u>    9</u>
mean         30.77 round to the nearest tenth 30.80

b.) Standard deviation:
We need to calculate variance first:
5 pax : 30 - 30.80 = - 0.80 ⇒ -0.80² = 0.64 * 5pax = 3.20
1 pax : 31 - 30.80 =   0.20 ⇒  0.20²  = 0.04 * 1pax = 0.04
3 pax : 32 - 30.80 =   1.20 ⇒  1.20² = 1.44 * 3 pax = 4.32

Variance : (3.20 + 0.04 + 4.32) / 9 pax = 7.56 / 9 = 0.84

Standard deviation is simply the square root of the variance.

Standard deviation = √0.84 = 0.916 

0.916 round to nearest hundredths is 0.92
0.916 round to nearest tenths is 0.90
8 0
3 years ago
What is 179.4 ÷ 2.3 plz say it correctly
ella [17]
The answer is 78. I'm pretty sure.
7 0
3 years ago
Read 2 more answers
Study the triangle what can you conclude about the angle measures
lyudmila [28]
If 30 60 90 right triangle then ratio of short leg : long leg : hypotenuse = a : a√3 : 2a

in this case

short leg = 4
long leg = 4√3 (short leg times √3)
and
hypotenuse = 8 (twice of short leg)

so answer is A.
The angle measures are 30, 60 and 90
5 0
3 years ago
Read 2 more answers
Factor by grouping. Then supply the term that is missing below. 4mn+3m+8n+6=(m+2)(?+3)
shusha [124]

Answer:

(m+2) (4n+3)

Step-by-step explanation:

4mn+3m+8n+6

4mn +8n      +3m +6

Factor a 4n from the first term and a 3 from the second

4n (m+2) +3(m+2)

Factor out an (m+2)

(m+2) (4n+3)


8 0
3 years ago
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