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2 years ago

1/3+1/4 using simplest form

Mathematics

1 answer:

BlackZzzverrR [31]2 years ago

8 0

Well
1/3-1/4=1/12
so 1/3=1/12+1/4=1/12+3/12=4/12
and 1/4=-(1/12-1/3)=-1/12+1/3=-1/12+4/12=3/12
4/12+3/12=7/12

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snow_lady [41]

Answer:

a. 1.2 minutes

b. 0.83 laps

c. 25.2 minutes

Step-by-step explanation:

Lin runs 5 laps around a track in 6 minutes.

a. How many minutes per lap is that?

5 laps = 6 minutes

1 laps = x minutes

Cross Multiply

x minute × 5 laps = 6 minutes × 1 laps

x minute = 6 minutes × 1 laps/5 laps

x laps = 1.2 minutes

Hence, it is 1.2 minutes per lap

b. How many laps per minute is that?

6 minutes = 5 laps

1 minute = x laps

Cross Multiply

6 minutes × x laps = 1 minute × 5 laps

x laps = 1 minute × 5 laps/6 minutes

x laps = 0.8333333333 laps

Hence, it is 0.83 laps per minute.

c. If Lin runs 21 laps at the same rate,

5 laps = 6 minutes

21 laps = x minutes

Cross Multiply

x minute × 5 laps = 6 minutes × 21 laps

x minute = 6 minutes × 21 laps/5 laps

x laps = 25.2 minutes

Hence, it takes her 25.2 minutes

3 0

3 years ago

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Strike441 [17]

Answer:

85/2 or 42.5 ft²

Step-by-step explanation:

A = l x w

A = 7.5 (5 2/3)

= 15/2 (17/3)

= 255/6

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Step-by-step explanation:

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EleoNora [17]

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2 years ago

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ch4aika [34]

We can use FOIL to solve.

(x + 7)(x + 10)

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x² + 7x + 7x + 70

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Best of Luck!

8 0

3 years ago