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Svetlanka [38]
3 years ago
6

Leah has 28 more marbles than Dan. 1/3 of Leah’s marbles are equal in number to 4/5 of Dan’s marbles. Find the number of marbles

Leah has.
Mathematics
1 answer:
Goshia [24]3 years ago
3 0

Answer:

48

Step-by-step explanation:

L = D + 28

⅓L = ⅘D

Solve the system of equations using elimination or substitution.  Using substitution:

⅓L = ⅘(L − 28)

Multiply both sides by 15:

5L = 12(L − 28)

Distribute:

5L = 12L − 336

Combine like terms:

336 = 7L

Divide:

L = 48

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4 0
3 years ago
How do you use the elimination method ?
lidiya [134]
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6 0
3 years ago
Nine students were asked how many miles they live from school. Their answers are listed below.
Zielflug [23.3K]
Answer:  The mode is: 3 .  The range is:  6 .
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Explanation:
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  It would be best to list this values in the data set given, from least to greatest:
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{The number, "3", occurs FOUR (4) times.  The number, "4", occurs ONE (1) time.  The number, "5", occurs TWO (2) times.  The number, "6", occurs ONE (1) time.  The number, "9", occurs ONE (1) time.}.
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8 0
3 years ago
What is the length of the hypotenuse of the right triangle? Enter your answer in the box.
ki77a [65]

Answer:

10 ft

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let h be hypotenuse, then

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h = \sqrt{100} = 10

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