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vampirchik [111]
3 years ago
15

Help needed please

Mathematics
1 answer:
ycow [4]3 years ago
6 0
To change a fraction to a decimal all u do it divide the numerator by the denominator

to change a decimal to a percent you multiple it by 100

to change a percent to a decimal you divide it by 100

and to change a decimal back to a fraction you see what place the last digit of the decimal ends in (maybe tenths, hundredths, or thousandths place) and if it's tenths you put it over 10, if it's hundredths place then put it over 100 and ect.

but if it has whole numbers just write it out and ignore it // ex. 1.25= 1 25/100= 1 1/4

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Since Tina wants to buy grass seed to cover her whole lawn, except for the pool, and the pool is 7/12 m by 3/14 m, to find the area the grass seed needs to cover the following calculation must be performed:

It is impossible to determine the area that the grass seed needs to cover, because we do not have the data of the total size of the lawn. Now, you can determine the size of the surface that should not be covered, which is the one that the pool occupies, namely:

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Emilio will have both activities again on the same day after 90 days from this Saturday.

Step-by-step explanation:

<em>To solve this question list the multiples of 30 and 9 to find the first common multiple because the two activities will happen again in </em><em>a number divisible by both 30 and 9.</em>

∵ The multiples of 30 are: 30, 60, 90, 120, ............

∵ The multiples of 9 are: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, .....

→ The common multiple is 90

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