Casey and melissa are 21-year-old students. they live together, shop together, prepare food together, and eat together whenever possible. casey, a male, is 5 ft, 6 in and 132 lb (60 kg) and the captain of the debate team and sedentary. melissa, a female, is 5 ft, 6 in and 154 lb (70 kg) and the captain of the lacrosse team and very active. melissa consumes more calories per day than casey does. compare casey’s and melissa’s nutritional needs, based on their ages, genders, sizes, and activity levels.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

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