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bazaltina [42]
3 years ago
7

bob has 3 bookshelves that hold a total of 27 books. he adds a fourth shelf and now has 36 books. if he adds 2 more shelves ,how

many books can he have in total?
Mathematics
1 answer:
kotykmax [81]3 years ago
8 0
Based on the given information, each shelf can hold 9 books. (27/3 = 9) That means 2 additional shelves will hold 18 books. Add 18 to 36 to find the total, which is 54.
Hope that helped you.
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A 20 ft ladder leans against a building and reaches a point 13 ft above the ground. Find, to the nearest degree, the angle that
Snezhnost [94]
Since it forms a "right triangle" we can apply trigonometry.
sin x = oppo/hyp
sin x = 13/20
x = sin^-1(13/20)
x = sin^-1(0.65)
x = 40.5
rounded to nearest degree
x = 41 degrees


Hope this helps! :)
4 0
3 years ago
10 points please help and marked brainlyist
kherson [118]

Answer:

A.

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B.

Range of sample means: 0.25

C.

The first and last boxes should be checked, as they are true.

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4 0
3 years ago
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Bumek [7]

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3 0
3 years ago
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