The dot plots show the numbers of miles Ian skated on several days in two different months. July
0
5
10
Number of Miles Skated Each Day
15
August
10
Number of Miles Skated Each Day
15
Which statement is supported by the information in the dot plots?
A The least number of miles Ian skated on a day in July is greater than the least number of
miles Ian skated on a day in August.
B The median number of miles Ian skated each day in July is greater than the median
number of miles Ian skated each day in August.
C The mode of the number of miles Ian skated each day in July is less than the mode of the
number of miles lan skated each day in August.
D The range of the number of miles lan skated each day in July is less than the range of the
number of miles Ian skated each day in August
Ok

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

1.30

step-by-step explanation:

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