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Rama09 [41]
3 years ago
11

Sold 72 books. if ratio of books to bookmarks is 9:2, how many bookmark was sold?

Mathematics
2 answers:
prohojiy [21]3 years ago
8 0

Answer:

40

Step-by-step explanation:

They sold 9 book marks for every 2 books (9:2 ratio).

72/9 = 2/x

Cross multiply. 72 * x = 72x

9 * 2 = 18

72 divided by 18 = 40

Monica [59]3 years ago
5 0

Answer:

16 bookmarks were sold

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Jenna is at a fair with four friends. They all want to ride the roller coaster, but only three people can fit in a car. How many
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Answer:

They can make 10 different groups of three.

Step-by-step explanation:

The order in which the people are in the car is not important, so we use the combinations formula to solve this question.

Combinations formula:

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C_{n,x} = \frac{n!}{x!(n-x)!}

How many different groups of three can the five of them make?

Combinations of 3 from a set of 5. So

C_{5,3} = \frac{5!}{3!(5-3)!} = 10

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2 years ago
Isosceles triangles have two equal sides. true or false
melomori [17]
True 
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3 years ago
On the day of a child’s birth, a deposit of $25,000 is made in a trust fund that pays 8.75% interest, compounded continuously. D
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  $222,822.57

Step-by-step explanation:

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8 0
2 years ago
Whats 2099 dived by 800
sergejj [24]

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Step-by-step explanation:

5 0
2 years ago
A regular hexagon is shown.
-BARSIC- [3]

Answer:

(C)9 in.

Step-by-step explanation:

The apothem of a regular polygon is a line segment from the center to the midpoint of one of its sides.

Given the hexagon with a radius of 10 inches

The apothem AB divides the side of the hexagon into two equal parts of 5 Inches as seen in the attached diagram.

Using Pythagoras Theorem

10^2=5^2+|AB|^2\\|AB|^2=10^2-5^2\\|AB|^2=75\\|AB|=\sqrt{75}\\ |AB|=8.66$ in\\\approx$ 9 in (rounded to the nearest inch)

<u>The correct option is C</u>

8 0
3 years ago
Read 2 more answers
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