A veterinarian weighs 140 Lb. when she steps on a scale while holding a dog, the scale shows 192Lb. Let d represent the weight of the dog.

140+d = 192

d = 52

Step-by-step explanation:

the weight of the vet plus the god = total weight

140+d = 192

d = 192 - 140

d = 52

192=140+d          d=52

because they could drop even lower..

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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