Using the following data on the lengths of fish (in cm) caught by local fisherman in one day, complete the questions below. 34, 23, 26, 27, 12, 18, 19, 45, 31, 20, 27, 26, 9, 6, 55, 34, 26, 37, 44, 38, 22, 13, 18, 34, 37, 31

6, 9, 12, 13, 18, 18, 19, 20, 22, 23, 26, 26, 26, 27, 27, 31, 31, 34, 34, 34, 37, 37, 38, 44, 45, 55

Complete the frequency table below, chose an appropriate class interval for your data.

Class interval Midpoint (x) Frequency (f) xf
0 -<10 5 2 10
10 -<20 15 5 75
20 -<30 25 8 200
30 -<40 35 8 280
40 -<50 45 2 90
50 -<60 55 1 55
∑▒f = 26 ∑▒xf = 710

How to find the average fish size using the table?

55? i think maybe

step-by-step explanation:

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct