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mina [271]
3 years ago
11

A bookcase has a mass of 30 kilograms. A book in the bookcase has a mass of 400 grams. How many books of the same mass would it

take to equal the mass of the bookcase? A. 75 books B. 120 books C. 750 books D. 1,200 books
Mathematics
1 answer:
atroni [7]3 years ago
6 0

Answer: OPTION A

Step-by-step explanation:

You can convert  30 kilograms to grams (1\ kilogram= 1,000\ grams), then:

(30\ kilograms)(\frac{1,000\ grams}{1\ kilogram})=30,000\ grams

Then, if a book in the bookcase has a mass of 400 grams and you need to find the number of books of the same mass that would take to equal the mass of the bookcase, you can divide the weight of the bookcase (in grams) by the weigth of one of these books.

Therefore:

books=\frac{30,000\ grams}{400\ grams}\\\\books=75

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Suppose ABCD is a rectangle. Find AB and AD if point M is the midpoint of
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<span>AB=5.67 in</span>

 

4 0
3 years ago
Uhhhhhh????????????!
mariarad [96]

Answer:

2y + 3 = 4y + 2; y = 1/2

Step-by-step explanation:

to find this equation we can use the ys and the 1s to create an equation

so

in the left side

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your equation is

2y + 3

on the other side

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4 ys and 2 1s

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2y + 3 = 4y + 2

if you must solve

subtract 2y and 2 from both sides

1 = 2y

then divide both sides by 2

y = 1/2 is your answer

8 0
2 years ago
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