Rachel has found that the time it takes for her to make her favorite dessert decreases the more times she makes it. The time it takes in minutes (Al) can be modeled by: M= 72 — 0.75n, where n is the number of times that Rachel has made the dessert. a. How long will it take Rachel to make her dessert the fifth time?
b. After how many times will Rachel be able to make her dessert in 63 minutes?
c. How long will it take Rachel to make her dessert the 40th time? Do you think this is reasonable?

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

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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answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.