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3 years ago

The length of a rectangle is 3 times the width. The perimeter is 120 meters Find the length and width.

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

4 0

Answer:

Step-by-step explanation:

I think that it is 10 because it would have to be a rectangle or square to find the perimeter. So first I divided 120 by 4 and then got 30. Then I divided 30 by 3 and got 10. So, this is why I think it is 10.

120/4 = 30

30/3 = 10

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Setler [38]

Answer:

Step-by-step explanation:

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3 years ago

Mary has $65,000 to invest in two accounts. The first account is a private savings offering 6% annual interest and the second ac

const2013 [10]

Answer:

first account with 6% interest ( x ) = $46000

second account with 4% interest ( y ) = $19000

Step-by-step explanation:

Principal = $65000

first interest rate = 6%

second interest rate = 4%

assuming ; X = money invested in first account , Y = money invested in second account

hence :

( 65000 - y ) * 6% + ( 65000 - x ) * 4% = 3520

3900 - 0.06 y + 2600 - 0.04 x = 3520

0.04 x + 0.06 y = 3900 + 2600 - 3520

0.04 x + 0.06 y = 2980 ----- ( 1)

x + y = 65000 ------- ( 2 )

solve equation 1 and 2 simultaneously by elimination method

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0.06 x + 0.06 y = 3900 ------- ( 4 )

subtract equation 3 form equation 4

0.02 x = 920 , hence x = $46000

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3 years ago

The clock was exactly on time at 7am at 1pm the clock was 228 seconds late at that rate how slow was the clock half an hour

yan [13]

Answer:

19 seconds.

Step-by-step explanation:

Given that the clock was exactly on time at 7am, and at 1pm the clock was 228 seconds late, to determine, at that rate, how slow was the clock half an hour, the following calculation must be performed:

1 PM = 13:00

13 - 7 = 6

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Answer:

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Step-by-step explanation:

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8 0

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