When the new computer lab opened, there were 18 computers. by the end of first week, there were 25 computers. find the percent of change in the number of computers? round your answer to the nearest tenth, if necessary. a. –38.9% c. 38.9% b. 72% d. 33.3%

38.9% Option c.

Step-by-step explanation:

When the new computer lab opened, there were 18 computers.

By the end of first week, there were 25 computers.

The increase in numbers of computers = 25 - 18 = 7 computers

The percent of change =

                                      =

                                      = 38.888 ≈ 38.9%

The percent of change would be 38.9% in the number of computers.

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

pls mark as brainliest

answer: its c because when it has a magnet next to it it will move away from the mixture. hope this

step-by-step explanation: