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siniylev [52]
3 years ago
15

A store sells 3 videotapes for $4.99. find the unit rate

Mathematics
1 answer:
iogann1982 [59]3 years ago
7 0
1.66333333 because u divide 4.99 by 3 to get the value of one
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3. Franklin has 5 red marbles, 16 black marbles, 3 miniature green balls, and 9 miniature yellow balls in a jar at home. What is
Korolek [52]

Answer:

12:16

Step-by-step explanation:

Add the miniature balls.

3 + 9 = 12

There are 16 black marbles in the jar.

Therefore, the ratio of miniature balls to the number of black marbles is 12:16.

8 0
3 years ago
the scale from a square exercise mat in a gymnastic arena to a scale copy of the exercise mat is 8 m for every 2 in. The actual
m_a_m_a [10]

Answer: 18 and 36

Step-by-step explanation:

The scale is 8m for every 2 in and the actual area is 144m2 so we need to covert that into inches. You divide 144 by 8 which = 18 and then multiply 18 x 2 which is equal to 36.

7 0
3 years ago
How many "words" can be written using exactly five A's and no more than three B's (and no other letters)?
kakasveta [241]

This is a problem of Permutations. We have 3 cases depending on the number of B's. Since no more than three B's can be used we can use either one, two or three B's at a time.

Case 1: Five A's and One B

Total number of letters = 6

Total number of words possible = \frac{6!}{5!*1!}=6

Case 2: Five A's and Two B's

Total number of letters = 7

Total number of words possible = \frac{7!}{5!*2!}=21

Case 3: Five A's and Three B's

Total number of letters = 8

Total number of words possible = \frac{8!}{5!*3!}=56

Total number of possible words will be the sum of all three cases.

Therefore, the total number of words that can be written using exactly five A's and no more than three B's (and no other letters) are 6 + 21 + 56 = 83

8 0
3 years ago
Read 2 more answers
Write two division problems related to the multiplication problem below. 8×(-2)=-16
Alenkasestr [34]

To solve this problem, we must remember that division is the inverse operation of multiplication. This means to undo any multiplication problem, we can divide.

Because 8 * -2 = -16, if we divide the product by the two factors, we can reveal this unique relationship, as shown below:

-16/-2 = 8

-16/8 = -2

Therefore, the two division problems above are your answer.

Hope this helps!

3 0
3 years ago
Number puzzle:
ra1l [238]
6 times (7+5) plus 3 or 6x(7+5)+3
3 0
3 years ago
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