8. A triangle has sides with lengths of 6, 8, and 10 units, and a square has a
perimeter of 28 units. What is the positive difference, in square units,
between the area of the triangle and the area of the square?
a. 1
b. 4
c. 25
d. 100
e. 148

Difference between the area of the triangle and square is 25

Step-by-step explanation:

Area of the triangle = where s =

⇒ s = (6 + 8 + 10)/2 = 24/2 = 12

=

                                    = = = 24 sq. units

Perimeter of the square = 4 × side = 28

⇒ Side of the square = 28/4 = 7 units

⇒ Area of the square = (side)² = 7² = 49 sq. units

Difference = 49 - 24 = 25

i would need to see the dot plot : )

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